diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DummyStringAnalyzer.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AudioTranscription.kt
similarity index 95%
rename from vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DummyStringAnalyzer.kt
rename to vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AudioTranscription.kt
index 47c42ce4..06b1b51b 100644
--- a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DummyStringAnalyzer.kt
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AudioTranscription.kt
@@ -12,7 +12,7 @@ import org.vitrivr.engine.core.operators.ingest.Extractor
 import org.vitrivr.engine.core.operators.retrieve.Retriever
 import java.util.*
 
-class DummyStringAnalyzer : Analyser<ContentElement<*>, StringDescriptor> {
+class AudioTranscription : Analyser<ContentElement<*>, StringDescriptor> {
     override val contentClasses = setOf(ContentElement::class)
     override val descriptorClass = StringDescriptor::class
     override fun prototype() = StringDescriptor(id= UUID.randomUUID(), retrievableId = UUID.randomUUID(), transient = true, value = "")
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy192FloatVectorAnalyzer.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AverageColorGrid8.kt
similarity index 95%
rename from vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy192FloatVectorAnalyzer.kt
rename to vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AverageColorGrid8.kt
index 0c9d3b45..61b1ddc0 100644
--- a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy192FloatVectorAnalyzer.kt
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AverageColorGrid8.kt
@@ -12,7 +12,7 @@ import org.vitrivr.engine.core.operators.ingest.Extractor
 import org.vitrivr.engine.core.operators.retrieve.Retriever
 import java.util.*
 
-class Dummy192FloatVectorAnalyzer : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+class AverageColorGrid8 : Analyser<ContentElement<*>, FloatVectorDescriptor> {
     override val contentClasses = setOf(ContentElement::class)
     override val descriptorClass = FloatVectorDescriptor::class
     override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(192) { 0.0f }, transient=true)
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AverageColorGrid8Reduced15.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AverageColorGrid8Reduced15.kt
new file mode 100644
index 00000000..a3d2658f
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AverageColorGrid8Reduced15.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.vector.FloatVectorDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class AverageColorGrid8Reduced15 : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = FloatVectorDescriptor::class
+    override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(192) { 0.0f }, transient=true)
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, descriptors: Collection<FloatVectorDescriptor>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AverageFuzzyHist.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AverageFuzzyHist.kt
new file mode 100644
index 00000000..e373607b
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AverageFuzzyHist.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.vector.FloatVectorDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class AverageFuzzyHist : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = FloatVectorDescriptor::class
+    override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(15) { 0.0f }, transient=true)
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, descriptors: Collection<FloatVectorDescriptor>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy15FloatVectorAnalyzer.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AverageFuzzyHistNormalized.kt
similarity index 96%
rename from vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy15FloatVectorAnalyzer.kt
rename to vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AverageFuzzyHistNormalized.kt
index fd5fa1d2..432acc63 100644
--- a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy15FloatVectorAnalyzer.kt
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/AverageFuzzyHistNormalized.kt
@@ -12,7 +12,7 @@ import org.vitrivr.engine.core.operators.ingest.Extractor
 import org.vitrivr.engine.core.operators.retrieve.Retriever
 import java.util.*
 
-class Dummy15FloatVectorAnalyzer : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+class AverageFuzzyHistNormalized : Analyser<ContentElement<*>, FloatVectorDescriptor> {
     override val contentClasses = setOf(ContentElement::class)
     override val descriptorClass = FloatVectorDescriptor::class
     override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(15) { 0.0f }, transient=true)
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy12FloatVectorAnalyzer.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/CLD.kt
similarity index 95%
rename from vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy12FloatVectorAnalyzer.kt
rename to vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/CLD.kt
index eb94b237..938e7dd3 100644
--- a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy12FloatVectorAnalyzer.kt
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/CLD.kt
@@ -12,7 +12,7 @@ import org.vitrivr.engine.core.operators.ingest.Extractor
 import org.vitrivr.engine.core.operators.retrieve.Retriever
 import java.util.*
 
-class Dummy12FloatVectorAnalyzer : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+class CLD : Analyser<ContentElement<*>, FloatVectorDescriptor> {
     override val contentClasses = setOf(ContentElement::class)
     override val descriptorClass = FloatVectorDescriptor::class
     override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(12) { 0.0f }, transient=true)
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/CLDReduced15.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/CLDReduced15.kt
new file mode 100644
index 00000000..24cc3c9d
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/CLDReduced15.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.vector.FloatVectorDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class CLDReduced15 : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = FloatVectorDescriptor::class
+    override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(12) { 0.0f }, transient=true)
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, descriptors: Collection<FloatVectorDescriptor>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy2048FloatVectorAnalyzer.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/ConceptMasksADE20k.kt
similarity index 95%
rename from vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy2048FloatVectorAnalyzer.kt
rename to vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/ConceptMasksADE20k.kt
index 37dd0c2f..0accfa79 100644
--- a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy2048FloatVectorAnalyzer.kt
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/ConceptMasksADE20k.kt
@@ -12,7 +12,7 @@ import org.vitrivr.engine.core.operators.ingest.Extractor
 import org.vitrivr.engine.core.operators.retrieve.Retriever
 import java.util.*
 
-class Dummy2048FloatVectorAnalyzer : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+class ConceptMasksADE20k : Analyser<ContentElement<*>, FloatVectorDescriptor> {
     override val contentClasses = setOf(ContentElement::class)
     override val descriptorClass = FloatVectorDescriptor::class
     override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(2048) { 0.0f }, transient=true)
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DominantColor.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DominantColor.kt
new file mode 100644
index 00000000..8ab8f9bf
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DominantColor.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.scalar.StringDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class DominantColor : Analyser<ContentElement<*>, StringDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = StringDescriptor::class
+    override fun prototype() = StringDescriptor(id= UUID.randomUUID(), retrievableId = UUID.randomUUID(), transient = true, value = "")
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, StringDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, StringDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, StringDescriptor>, descriptors: Collection<StringDescriptor>, context: QueryContext): Retriever<ContentElement<*>, StringDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, StringDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, StringDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy64FloatVectorAnalyzer.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DominantEdgeGrid.kt
similarity index 95%
rename from vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy64FloatVectorAnalyzer.kt
rename to vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DominantEdgeGrid.kt
index bd00960a..8609c32a 100644
--- a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy64FloatVectorAnalyzer.kt
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DominantEdgeGrid.kt
@@ -12,7 +12,7 @@ import org.vitrivr.engine.core.operators.ingest.Extractor
 import org.vitrivr.engine.core.operators.retrieve.Retriever
 import java.util.*
 
-class Dummy64FloatVectorAnalyzer : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+class DominantEdgeGrid : Analyser<ContentElement<*>, FloatVectorDescriptor> {
     override val contentClasses = setOf(ContentElement::class)
     override val descriptorClass = FloatVectorDescriptor::class
     override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(64) { 0.0f }, transient=true)
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy256FloatVectorAnalyzer.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DominantEdgeGrid16.kt
similarity index 95%
rename from vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy256FloatVectorAnalyzer.kt
rename to vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DominantEdgeGrid16.kt
index 5d8cac9e..dfaf21fd 100644
--- a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy256FloatVectorAnalyzer.kt
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DominantEdgeGrid16.kt
@@ -12,7 +12,7 @@ import org.vitrivr.engine.core.operators.ingest.Extractor
 import org.vitrivr.engine.core.operators.retrieve.Retriever
 import java.util.*
 
-class Dummy256FloatVectorAnalyzer : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+class DominantEdgeGrid16 : Analyser<ContentElement<*>, FloatVectorDescriptor> {
     override val contentClasses = setOf(ContentElement::class)
     override val descriptorClass = FloatVectorDescriptor::class
     override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(256) { 0.0f }, transient=true)
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DominantEdgeGrid8.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DominantEdgeGrid8.kt
new file mode 100644
index 00000000..9205b3e2
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/DominantEdgeGrid8.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.vector.FloatVectorDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class DominantEdgeGrid8 : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = FloatVectorDescriptor::class
+    override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(64) { 0.0f }, transient=true)
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, descriptors: Collection<FloatVectorDescriptor>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy80FloatVectorAnalyzer.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/EHD.kt
similarity index 95%
rename from vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy80FloatVectorAnalyzer.kt
rename to vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/EHD.kt
index 97726b8b..5e0e6627 100644
--- a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy80FloatVectorAnalyzer.kt
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/EHD.kt
@@ -12,7 +12,7 @@ import org.vitrivr.engine.core.operators.ingest.Extractor
 import org.vitrivr.engine.core.operators.retrieve.Retriever
 import java.util.*
 
-class Dummy80FloatVectorAnalyzer : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+class EHD : Analyser<ContentElement<*>, FloatVectorDescriptor> {
     override val contentClasses = setOf(ContentElement::class)
     override val descriptorClass = FloatVectorDescriptor::class
     override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(80) { 0.0f }, transient=true)
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/EdgeARP88.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/EdgeARP88.kt
new file mode 100644
index 00000000..513e220c
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/EdgeARP88.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.vector.FloatVectorDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class EdgeARP88 : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = FloatVectorDescriptor::class
+    override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(64) { 0.0f }, transient=true)
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, descriptors: Collection<FloatVectorDescriptor>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/EdgeGrid16.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/EdgeGrid16.kt
new file mode 100644
index 00000000..49d69515
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/EdgeGrid16.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.vector.FloatVectorDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class EdgeGrid16 : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = FloatVectorDescriptor::class
+    override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(256) { 0.0f }, transient=true)
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, descriptors: Collection<FloatVectorDescriptor>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy512FloatVectorAnalyzer.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/HOGMF25k512.kt
similarity index 95%
rename from vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy512FloatVectorAnalyzer.kt
rename to vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/HOGMF25k512.kt
index 458e05f0..6996604d 100644
--- a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy512FloatVectorAnalyzer.kt
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/HOGMF25k512.kt
@@ -12,7 +12,7 @@ import org.vitrivr.engine.core.operators.ingest.Extractor
 import org.vitrivr.engine.core.operators.retrieve.Retriever
 import java.util.*
 
-class Dummy512FloatVectorAnalyzer : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+class HOGMF25k512 : Analyser<ContentElement<*>, FloatVectorDescriptor> {
     override val contentClasses = setOf(ContentElement::class)
     override val descriptorClass = FloatVectorDescriptor::class
     override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(512) { 0.0f }, transient=true)
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy16FloatVectorAnalyzer.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/HueHistogram.kt
similarity index 95%
rename from vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy16FloatVectorAnalyzer.kt
rename to vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/HueHistogram.kt
index d8d6b3fb..32a86463 100644
--- a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy16FloatVectorAnalyzer.kt
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/HueHistogram.kt
@@ -12,7 +12,7 @@ import org.vitrivr.engine.core.operators.ingest.Extractor
 import org.vitrivr.engine.core.operators.retrieve.Retriever
 import java.util.*
 
-class Dummy16FloatVectorAnalyzer : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+class HueHistogram : Analyser<ContentElement<*>, FloatVectorDescriptor> {
     override val contentClasses = setOf(ContentElement::class)
     override val descriptorClass = FloatVectorDescriptor::class
     override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(16) { 0.0f }, transient=true)
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy1536FloatVectorAnalyzer.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/InceptionResNetV2.kt
similarity index 95%
rename from vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy1536FloatVectorAnalyzer.kt
rename to vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/InceptionResNetV2.kt
index 8862248f..e5a64739 100644
--- a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy1536FloatVectorAnalyzer.kt
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/InceptionResNetV2.kt
@@ -12,7 +12,7 @@ import org.vitrivr.engine.core.operators.ingest.Extractor
 import org.vitrivr.engine.core.operators.retrieve.Retriever
 import java.util.*
 
-class Dummy1536FloatVectorAnalyzer : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+class InceptionResNetV2 : Analyser<ContentElement<*>, FloatVectorDescriptor> {
     override val contentClasses = setOf(ContentElement::class)
     override val descriptorClass = FloatVectorDescriptor::class
     override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(1536) { 0.0f }, transient=true)
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy3FloatVectorAnalyzer.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/MedianColor.kt
similarity index 95%
rename from vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy3FloatVectorAnalyzer.kt
rename to vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/MedianColor.kt
index de3f808c..4bbfcb1f 100644
--- a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/Dummy3FloatVectorAnalyzer.kt
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/MedianColor.kt
@@ -12,7 +12,7 @@ import org.vitrivr.engine.core.operators.ingest.Extractor
 import org.vitrivr.engine.core.operators.retrieve.Retriever
 import java.util.*
 
-class Dummy3FloatVectorAnalyzer : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+class MedianColor : Analyser<ContentElement<*>, FloatVectorDescriptor> {
     override val contentClasses = setOf(ContentElement::class)
     override val descriptorClass = FloatVectorDescriptor::class
     override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(3) { 0.0f }, transient=true)
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/MedianFuzzyHist.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/MedianFuzzyHist.kt
new file mode 100644
index 00000000..5905a0e2
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/MedianFuzzyHist.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.vector.FloatVectorDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class MedianFuzzyHist : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = FloatVectorDescriptor::class
+    override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(15) { 0.0f }, transient=true)
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, descriptors: Collection<FloatVectorDescriptor>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/OpenCLIP.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/OpenCLIP.kt
new file mode 100644
index 00000000..d70f4c86
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/OpenCLIP.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.vector.FloatVectorDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class OpenCLIP : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = FloatVectorDescriptor::class
+    override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(512) { 0.0f }, transient=true)
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, descriptors: Collection<FloatVectorDescriptor>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/ProvidedOCR.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/ProvidedOCR.kt
new file mode 100644
index 00000000..d31d415a
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/ProvidedOCR.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.scalar.StringDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class ProvidedOCR : Analyser<ContentElement<*>, StringDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = StringDescriptor::class
+    override fun prototype() = StringDescriptor(id= UUID.randomUUID(), retrievableId = UUID.randomUUID(), transient = true, value = "")
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, StringDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, StringDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, StringDescriptor>, descriptors: Collection<StringDescriptor>, context: QueryContext): Retriever<ContentElement<*>, StringDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, StringDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, StringDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/SURFMF25K512.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/SURFMF25K512.kt
new file mode 100644
index 00000000..2fe35438
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/SURFMF25K512.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.vector.FloatVectorDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class SURFMF25K512 : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = FloatVectorDescriptor::class
+    override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(512) { 0.0f }, transient=true)
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, descriptors: Collection<FloatVectorDescriptor>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/VisualTextCoEmbedding.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/VisualTextCoEmbedding.kt
new file mode 100644
index 00000000..cfc7f721
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/VisualTextCoEmbedding.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.vector.FloatVectorDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class VisualTextCoEmbedding : Analyser<ContentElement<*>, FloatVectorDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = FloatVectorDescriptor::class
+    override fun prototype() = FloatVectorDescriptor(UUID.randomUUID(), UUID.randomUUID(), List(256) { 0.0f }, transient=true)
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, descriptors: Collection<FloatVectorDescriptor>, context: QueryContext): Retriever<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, FloatVectorDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, FloatVectorDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/WhisperASR.kt b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/WhisperASR.kt
new file mode 100644
index 00000000..e1cc265f
--- /dev/null
+++ b/vitrivr-engine-base/src/main/kotlin/org/vitrivr/engine/base/features/migration/WhisperASR.kt
@@ -0,0 +1,30 @@
+package org.vitrivr.engine.base.features.migration
+
+import org.vitrivr.engine.core.context.IndexContext
+import org.vitrivr.engine.core.context.QueryContext
+import org.vitrivr.engine.core.model.content.element.ContentElement
+import org.vitrivr.engine.core.model.descriptor.scalar.StringDescriptor
+import org.vitrivr.engine.core.model.metamodel.Analyser
+import org.vitrivr.engine.core.model.metamodel.Schema
+import org.vitrivr.engine.core.model.retrievable.Retrievable
+import org.vitrivr.engine.core.operators.Operator
+import org.vitrivr.engine.core.operators.ingest.Extractor
+import org.vitrivr.engine.core.operators.retrieve.Retriever
+import java.util.*
+
+class WhisperASR : Analyser<ContentElement<*>, StringDescriptor> {
+    override val contentClasses = setOf(ContentElement::class)
+    override val descriptorClass = StringDescriptor::class
+    override fun prototype() = StringDescriptor(id= UUID.randomUUID(), retrievableId = UUID.randomUUID(), transient = true, value = "")
+    override fun newRetrieverForContent(field: Schema.Field<ContentElement<*>, StringDescriptor>, content: Collection<ContentElement<*>>, context: QueryContext): Retriever<ContentElement<*>, StringDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newRetrieverForDescriptors(field: Schema.Field<ContentElement<*>, StringDescriptor>, descriptors: Collection<StringDescriptor>, context: QueryContext): Retriever<ContentElement<*>, StringDescriptor> {
+        TODO("Not yet implemented")
+    }
+
+    override fun newExtractor(field: Schema.Field<ContentElement<*>, StringDescriptor>, input: Operator<Retrievable>, context: IndexContext, persisting: Boolean, parameters: Map<String, Any>): Extractor<ContentElement<*>, StringDescriptor> {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/vitrivr-engine-base/src/main/resources/META-INF/services/org.vitrivr.engine.core.model.metamodel.Analyser b/vitrivr-engine-base/src/main/resources/META-INF/services/org.vitrivr.engine.core.model.metamodel.Analyser
index e5c1d300..5c03b074 100644
--- a/vitrivr-engine-base/src/main/resources/META-INF/services/org.vitrivr.engine.core.model.metamodel.Analyser
+++ b/vitrivr-engine-base/src/main/resources/META-INF/services/org.vitrivr.engine.core.model.metamodel.Analyser
@@ -2,17 +2,30 @@ org.vitrivr.engine.base.features.averagecolor.AverageColor
 org.vitrivr.engine.base.features.external.implementations.dino.DINO
 org.vitrivr.engine.base.features.external.implementations.clip.CLIP
 org.vitrivr.engine.base.features.OCRSearch.OCRSearch
-org.vitrivr.engine.base.features.migration.DummyStringAnalyzer
+org.vitrivr.engine.base.features.migration.WhisperASR
+org.vitrivr.engine.base.features.migration.ProvidedOCR
+org.vitrivr.engine.base.features.migration.AudioTranscription
 org.vitrivr.engine.base.features.migration.SkeletonPose
-org.vitrivr.engine.base.features.migration.Dummy3FloatVectorAnalyzer
-org.vitrivr.engine.base.features.migration.Dummy12FloatVectorAnalyzer
-org.vitrivr.engine.base.features.migration.Dummy15FloatVectorAnalyzer
-org.vitrivr.engine.base.features.migration.Dummy16FloatVectorAnalyzer
-org.vitrivr.engine.base.features.migration.Dummy64FloatVectorAnalyzer
-org.vitrivr.engine.base.features.migration.Dummy80FloatVectorAnalyzer
-org.vitrivr.engine.base.features.migration.Dummy192FloatVectorAnalyzer
-org.vitrivr.engine.base.features.migration.Dummy256FloatVectorAnalyzer
-org.vitrivr.engine.base.features.migration.Dummy512FloatVectorAnalyzer
-org.vitrivr.engine.base.features.migration.Dummy1536FloatVectorAnalyzer
-org.vitrivr.engine.base.features.migration.Dummy2048FloatVectorAnalyzer
-org.vitrivr.engine.base.features.migration.AverageColorRaster
\ No newline at end of file
+org.vitrivr.engine.base.features.migration.MedianColor
+org.vitrivr.engine.base.features.migration.CLD
+org.vitrivr.engine.base.features.migration.CLDReduced15
+org.vitrivr.engine.base.features.migration.AverageFuzzyHistNormalized
+org.vitrivr.engine.base.features.migration.AverageFuzzyHist
+org.vitrivr.engine.base.features.migration.MedianFuzzyHist
+org.vitrivr.engine.base.features.migration.HueHistogram
+org.vitrivr.engine.base.features.migration.DominantEdgeGrid
+org.vitrivr.engine.base.features.migration.EHD
+org.vitrivr.engine.base.features.migration.AverageColorGrid8
+org.vitrivr.engine.base.features.migration.AverageColorGrid8Reduced15
+org.vitrivr.engine.base.features.migration.EdgeGrid16
+org.vitrivr.engine.base.features.migration.DominantEdgeGrid16
+org.vitrivr.engine.base.features.migration.VisualTextCoEmbedding
+org.vitrivr.engine.base.features.migration.OpenCLIP
+org.vitrivr.engine.base.features.migration.HOGMF25k512
+org.vitrivr.engine.base.features.migration.SURFMF25K512
+org.vitrivr.engine.base.features.migration.InceptionResNetV2
+org.vitrivr.engine.base.features.migration.ConceptMasksADE20k
+org.vitrivr.engine.base.features.migration.AverageColorRaster
+org.vitrivr.engine.base.features.migration.EdgeARP88
+org.vitrivr.engine.base.features.migration.DominantColor
+org.vitrivr.engine.base.features.migration.DominantEdgeGrid8
\ No newline at end of file
diff --git a/vitrivr-engine-server/src/main/kotlin/org/vitrivr/engine/tools/CineastMigrationTool.kt b/vitrivr-engine-server/src/main/kotlin/org/vitrivr/engine/tools/CineastMigrationTool.kt
index 28809b91..36b05408 100644
--- a/vitrivr-engine-server/src/main/kotlin/org/vitrivr/engine/tools/CineastMigrationTool.kt
+++ b/vitrivr-engine-server/src/main/kotlin/org/vitrivr/engine/tools/CineastMigrationTool.kt
@@ -567,10 +567,11 @@ class CineastMigrationTool(val migrationconfigpath: String, val schemaconfigpath
         migrationTool.load_idmap()
 
         runBlocking {
-            migrationTool.migrateAllFeatures()
+            migrationTool.migrateFeature("skeletonpose")
         }
 
 
+
         println("Migration completed successfully.")