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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html>
<head>
<title>τ-ARGUS news</title>
<meta name="; author; " content="; Statistics; Netherlands; ">
<link rel="stylesheet" type="text/css" href="TAUARGUS.css">
</head>
<body>
<h1>τ-ARGUS New developments </h1><p>
<hr>
<h2>Last modified: 20 December 2021</h2>
<h2>τ-ARGUS version 4.2.2</h2>
<hr><i>20 December 2021</i><br>
Version 4.2.2<br>
Fixed bug with spaces in directory names.<br>
Rewrote part of Modular implementation to better deal with memory issues.<br>
More unfeasible tables will be detected without crashing. An error message wil be given instead.<br>
Fixed bug with writing zero's only as cellkeys in CKM for frequency tables.<br>
<h2>τ-ARGUS version 4.2.0</h2>
<hr><i>7 February 2020</i><br>
Version 4.2.0 build 1<br>
Introduced the Cell Key method (CKM) for frequency count tables and magnitude tables.<br>
Possible to call CKM from batch file.<br>
Added graph feedback on CKM for frequency count tables.<br>
CKM for magnitude tables: parameters are defined in the .rda-file.<br>
Adjusted the SpecifyMetadata dialog to be able to deal with CKM for magnitude tables.<br>
No longer checks for CPLEX license file if CPLEX is not used.<br>
Possible to save recode tree.<br>
Request rule in batch now detects use of holdings.<br>
Fixed bug that shadow variable and record key could not be first variable in microdata.<br>
Fixed some error messages for controlled rounding (more informative).<br>
<h2>τ-ARGUS version 4.1.7</h2>
<hr><i>12 February 2017</i><br>
Version 4.1.7 build 3<br>
Small issue with reading back suppressions in specific linked tables set up fixed.
<hr><i>19 December 2017</i><br>
Version 4.1.7 build 2<br>
Added checks on maximum number of dimensions for Modular, Optimal and Linked.<br>
The generator of the batch-file has been improved. The weight and missing=safe parameters have been included and also the WRITETABLE command has been added.<br>
Status M (secondary) will now be accepted when reading a (protected) table.<br>
No more check for CPLEX Licence file while using other solvers in Rounder.<br>
Negative "general total" no longer causes a crash.<br>
Small fix in singleton protection for negative cells.<br>
Small fix in saving tabular data.<br>
Able to "walk" through table cells with arrow keys.<br>
Cell stays selected after changing its state.<br>
Fixed some issue with writing in intermediate format in batch (issue #36).<br>
When generating a batch-file the writetable command now writes the correct table number.<br>
Correct tab of rules-panel is chosen in DialogSelectTable.<br>
Fixed bug of issue #79 (protected cells in combination with distance costs).<br>
Linked Tables menu item now only enabled when at least 2 tables present.<br>
Some minor GUI things.<br>
<h2>τ-ARGUS version 4.1.6</h2>
<hr><i>10 July 2017</i><br>
Version 4.1.6 build 2<br>
Explicit empty cells are accepted again in tabular data input<br>
Checks added that tabular data input can only be in free format<br>
Large cell values in 1-dim table now read correctly<br>
Added functionality to batch commands<br>
<SOLVER><br>
<WRITETABLE><br>
<READTABLE><br>
<CLEAR><br>
<VERSIONINFO><br>
Additional parameter to comamndline call to define batch-data directory<br>
Maximum number of levels in a hierarchy now set consistently to 10<br>
The <FREQ> is now working correctly in batch-mode<br>
Solved issue with directory name of .CDL-file in intermediate format<br>
Changed some icons<br>
<h2>τ-ARGUS version 4.1.5</h2>
<hr><i>14 April 2017</i><br>
Version 4.1.5 build 1<br>
Modular and Optimal approach now deal with Scaling Costs in the same way, fixing issues #7 and #34<br>
Issue #40 on possibility of crashing when using weights is fixed<br>
Issues #29 and #46 on number of significant digits fixed<br>
Issue #8 on partitioning in rounding fixed<br>
Issue #42 on saving options (quotes around variables, name on first line, ...) fixed<br>
Numbering of levels in display and in recode is now the same<br>
Many checks on data added to tabular input. Should resolve issue #5<br>
At some places, the cursor will change in a 'waiting'-cursor when working<br>
Some small bugs in the interface fixed<br>
<h2>τ-ARGUS version 4.1.4</h2>
<hr><i>21 December 2016</i><br>
Version 4.1.4 build 1<br>
In “Generate Apriori” it is now possible to only adjust the cost of a cell, without changing the status (combining “omit” with “cost”).<br>
Bug fix: minimum frequency rule was used even when not selected. This is corrected.<br>
Length of code names in Hypercube is no longer limited.<br>
Zero unsafe is now correctly used in Calculate Table.<br>
Some small bugs in csv output fixed.<br>
Overlapping variables in fixed format allowed.<br>
<LOGBOOK> command in batch-job fixed (quotes can be used again).<br>
Workaround for use of dots in codes in hierarchies (note: still not allowed to start with a dot).<br>
Some small bugs in interface fixed.<br>
<h2>τ-ARGUS version 4.1.3</h2>
<hr><i>23 November 2015</i><br>
Version 4.1.3 build 1<br>
Linked tables now works up to 7 tables<br>
Limiting time in subtables (modular approach) now also works in batch-mode<br>
Bug fixes writing csv format (o.a. rounded figures)<br>
Some minor bug fixes in interface<br>
<h2>τ-ARGUS version 4.1.2</h2>
<hr><i>13 August 2015</i><br>
Version 4.1.2 build 1<br>
Some bug fixes in interface<br>
Adjusted routines that display rounded figures to be able to deal with larger cell values (doubles)<br>
Holdings now correctly detected in batch-mode<br>
Settings (safety rules) after batch now correctly saved<br>
Progress info when running Rounding<br>
Possible to stop/continue Rounding<br>
<h2>τ-ARGUS version 4.1.1</h2>
<hr><i>29 April 2015</i><br>
Version 4.1.1 build 1<br>
Some bug fixes in interface<br>
Availability of SPSS is now detected runtime<br>
Bug fix in Output format (spurious comma's removed)<br>
Bug fix in a-priori functionality (dimension of tables)<br>
Bug fix in Linked tables (bogus levels in cover table)<br>
A wrapper executable is available<br>
<h2>τ-ARGUS version 4.1.0</h2>
<hr><i> 23 February 2015</i>
Second release of Open Source version of τ-ARGUS<br>
Version 4.1.0 build 2<br>
Some bug fixes in the interface<br>
Bug related to Distance cost function fixed<br>
<hr><i> 19 December 2014</i>
First release of Open Source version of τ-ARGUS<br>
Version 4.1.0 build 1
<h2>τ-ARGUS beta releases</h2>
<hr><i> 15 September 2014</i>
Second beta release of Open Source version of τ-ARGUS<br>
Version 4.0.2 (beta)
<hr><i> 20 June 2014</i>
First beta release of Open Source version of τ-ARGUS<br>
Version 4.0.1 (beta)
<hr>
<br>
<h2>Pre Open Source versions</h2>
<hr><i> 16 September 2013</i>
An error in the protection levels of negative cells values has been solved. <br>
The treatment of the protection levels is now also consistent in modular, audit and CTA.<br>
The procedure to handle the singleton protection in modular was not correct, when there were negative cells.<br>
This could lead to unexpected failures in the protection. This has been corrected as well.<br>
As a consequence there could be slight deviations in the results.
<hr><i>15 April 2013</i>
Problems using τ-ARGUS on Win7 in combination with CPlex have been solved. No longer administration rights required.<br>
The singleton protection options are now also available for the full-optimisation model.
<hr><i>26 February 2013</i>
The options for writing output have been extended.<br>
An error using CPlex has been solved.
<hr><i>19 November 2012</i>
The distance function is now available as an alternative cost-function.
<hr><i>7 November 2012</i>
The missing=safe option was not handled correctly after a global recoding. Has been solved.
<hr><i>27 August 2012</i>
The singleton procedure in the Hypercube can now be activated optionally.
By default it is activated if there is a frequency available (always when the table has been created from microdata, but not always if the input is ready-made tables).<br>
Interactively the option is available in the GHMiter options window.<br>
In batch the GH command has been extended:<br>
<i>GH(TabNo, A priori Bounds Percentage, ModelSize, ApplySingleton)</i>; ApplySingleton = 1 equals yes, 0 equals no.
In batch writing the JJ-file is now possible (option 5)
<hr><i>29 July 2012</i>
The procedure to compute the protection levels gave incorrect results for negative cell values. Has been corrected.<br>
In batch the sensitivity rules could give wrong results when the TopN values were used.
<hr><i>31 May 2012</i>
An error in the procedure to make a table additive has been corrected.
<hr><i>27 February 2012</i>
The singleton-protection did not work properly when using the linked tables in batch.
The default settings were used and not the specification in the .ARB file
<hr><i>22 February 2012</i>
The distance function is now also available for linked tables
<hr><i>25 January 2012</i>
Linked tables has an error when in one table the corresponding variable was hierarchical and in the other not. Has been corrected.
<hr><i>24 January 2012</i>
In batch creating multiple tables from a microdata file caused a problem. Has been corrected.
<hr><i>12 January 2012</i>
The code for the total-category can be chosen by the user, also when computing tables from microdata<br>
In linked tables a similar cell can be present in different tables. Inconsistencies are to be avoided.
A small report (Inconsistent.txt) is now created in the temp-directory and reported in the log-file.
<hr><i>13 December 2011</i>
The linked tables option could fail unexpectedly. It has been corrected.
<hr><i>25 November 2011</i>
The installation procedure of Build 10 failed. <br>
An error in reading a batch-file with microdata-input failed. Has been corrected.
<hr><i>17 November 2011</i>
An error in the table vi ewer, when switching from a 2-dim to a 1 dim table has been solved.
<hr><i>17 November 2011</i>
When introducing the new singleton option, some overprotection was introduced by too much backtracking.
This has been corrected in this build.
<!--8 dimensional tables can be computed. However no protection is possible.-->
<hr><i>5 October 2011</i>
Linked tables is now possible in batch.
Also the linked tables procedure is mentioned in the report.<br>
An update in the singletons procedure has been implemented. During the backtracking procedure the suppressed marginals are not considered as primaries when applying the singleton procedure. This avoids some overprotection. More details see the Tarragona paper.
<hr><i>2 September 2011</i>
Linked tables when using fixed format microdata is now possible.
<hr><i>21 June 2011</i>
Some minor errors in linked tables have been removed.
The SBS-output now also acknowledges the p%-rule (F-flag).
<hr><i>9 May 2011</i>
This is the first release of τ-ARGUS 3.5.<br>
Linked tables with modular is now possible<br>
When a set of tables can be seen as a subset of a larger cover table, this set can now be protected.
It is a restriction that the cover table has not more than 4 dimensions.
The problem can also be solved using the hypercube. <br>
An updated version of the manual is also available.
<hr><i>26 April 2011</i>
A new approach for protecting the singletons has been implemented in modular and optimal.<br>
No longer the protection levels are increased to force additional suppressions for protecting the singletons,
but artificial cells (a combination of 2 singletons, a singleton and a multiple
or a group of cells not meeting the sensitivity rules) are added to the problem.
These artificial cells get a minimal protection level.<br>
This will reduce the over-protection caused by the previous solution.
<hr><i>10 February 2011</i>
The computation of the protection levels for very small cells could cause problems. If the prot. level became less than 1 a minimum of 1 was substituted. This has been replaced by the smallest non-zero that can be printed given the precision of the cell values. So if two decimals are used for the response variable this minimum is now 0.01.<br>
A cancel button has been added at the first windows after calling Hypercube, Modular or Optimal.
<hr><i>1 February 2011</i>
In the apriory file an option has been introduced to apply a change to all cells that are equal by definition. In hierarchies often trivial levels are present. This option guarantees the consistency of a table.
<hr><i>21 January 2011</i>
An error reading tables in batch (introduced in B18) has been corrected.
<hr><i>7 January 2011</i>
If the minimum cell value is non-negative, the minimum cell value is no longer asked before suppression.
Always a 0 is assumed.
<hr><i>3 January 2011</i>
When applying apriory information via an apriory file, inconsistencies might be introduced.
This could happen if certain cells in a trivial breakdown in a hierarchy will be assigned a different status.
An additional option is introduced such that a change is applied to all cells that are implicitly the same.
<hr><i>16 December 2010</i>
In the report file only summary of the results of a apriori file is presented.<br>
The details are presented is a sub -report, accessible via a link.<br>
In case of multiple apriori files all information is presented.
<hr><i>30 September 2010:</i>
The singleton option did not work properly when tables had also negative values. Has been corrected.
<hr><i>25 June 2010</i>
3.4.1: The audit program did not accept the decimal comma. Has been corrected. <br>
3.4.1: The results of the audit are recorded in a report file and also visible on the screen.<br>
3.4.1: If a table is not additive, a report is generated.<br>
3.4.1: An error in modular (generated protected levels for margins) has been corrected.<br>
3.4.1: A cancel-button has been added when starting a suppression modules.<br>
3.4.1: Some more settings will be 'remembered' in the registry.<br>
<hr><i>30 March 2010</i>
In 3.4.0 B3: The audit program could fail if there are negative cell values; has been corrected
<hr><i>Feb 2010</i>
In 3.4.0 B1: The table viewer did show the incorrect table when changing between several tables
<hr><i>7 December 2009</i>
In 3.3.1 B20: The feasibility tolerance in the optimisation routines has been reduced to 1.0E-6
in order to avoid problems when the table has large figures. However further research is needed.
<hr><i>6 November 2009</i>
In 3.3.1 B19: An error in writing the intermediate format was corrected. The status-only flag was not treated correctly<br>
<hr><i>22 October 2009</i>
In 3.3.1 B18: For the freq.rule the zero protection margin is again allowed. Only a warning will be displayed.<br>
<hr><i>19 October 2009</i>
In 3.3.1 B17: zero-cells which are primaries caused problems with protection levels <br>
<hr><i>8 October 2009</i>
In 3.3.1 B16: Little bug in the audit routine has been solved.<br>
<hr><i>28 September 2009</i>
In 3.3.1 B15: Small error in the backtracking procedure of modular has been corrected.<br>
Modifying the cost-function is also possible interactively.
<hr><i>3 September 2009</i>
In 3.3.1 B12: The precision by transferring the lower and upper protection levels between
the various parts of tau has been increased.<br>
They are also more consistent. It might lead to slightly different suppression patterns.<br>
Also the protection levels between suppression and auditing are more consistent
<hr><i>10 August 2009</i>
In 3.3.1 B11: A bug in apriory of B9 corrected
<hr><i>3 August 2009</i>
In 3.3.1 B10: A minor mistake in ReadTable corrected. Tau could break down at the end of reading a table
<hr><i>3 August 2009</i>
In 3.3.1 B9: Apriori file can now also be used after recodings<br>
A safe table can now be converted into a a-priori file.
<hr><i>12 June 2009</i>
In 3.3.1 B8: Error in batch version of the hypercube has been corrected
<hr><i>10 June 2009</i>
In 3.3.1 B7: Error in writing intermediate format (wrong order) corrected.
New .HRC files are generated when necessary.
<hr><i>4 June 2009</i>
In 3.3.1 B6: Error in table presentation corrected.<br>
Audit-procedure also checks the secondaries.
The table presenter shows the lower and upper values of each cell with the ranges as a tool-tip
<hr><i>20 May 2009</i>
In 3.3.1 B4: XPress can now also be used with the audit routine.<br>
Table presenter has been improved; Very large tables can be shown as only the highest levels are displayed at the start.
<hr><i>4 May 2009</i>
In 3.3.1 B1: Multi-response tables can now also be saved.
<hr><i>20 April 2009</i>
In 3.3.1 B1: Negative cell values in 'Modular' are now possible.
<hr><i>25 October 2007</i>
In 3.2.0 B7: If there are negative cell values 'Modular' and 'Optimal' it will not be possible.
<hr><i>3 July 2007</i>
In 3.2.0 B6: Some open ends with the rounder-partitioning solved. "Damaged blocks" error solved. Partitioning blocked for 1-dim table (also in batch).
Partitioning after recoding a hier. variable works now.
<hr><i>3 July 2007</i>
In 3.2.0 B6: XPress18/2007 included
<hr><i>22 May 2007:</i>
In 3.2.0 build 3 there was an error. The problem was sometimes called infeasible, although it was not the case.
<hr><i>8 May 2007:</i>
Apply and undo buttons in Global-Recode window only active if appropriate.
<hr><i>25 April 2007:</i>
XPress 17C (2006) has been includes. This version is needed for the new floating licensing mechanism of Xpress.
<hr><i>25 April 2007:</i>
For the SuperCross interface a smaller report file is available.
<hr><i>25 April 2007:</i>
'change view' in 'view table' has been improved for one-dim. tables.<br>
<hr><i>25 April 2007:</i>
Checks on infeasible problems have been improved for modular and optimal.<br>
<hr><i>8 February 2007:</i>
SBS-output format has been included.<br>
<hr><i>23 January 2007:</i>
XPress 17 in now included in the installation.
<br><hr><i>23 January 2007:</i>
An error in the singleton protection of Modular has been corrected. It failed to work if no freq-rule had been specified.
<br><hr><i>23 January 2007:</i>
Several additional error checking in the batch version have been included.
<br><hr><i>23 January 2007:</i>
Many CENEX-suggestions have been included, mainly layout.
<br><hr><i>13 July 2006:</i>
Adjustment of the protection level is now available in the a-priory file<br>
"c1,c2,PL,lower-level,upper-level".
<hr>
<i>13 July 2006:</i> In Batch: If rounding base = empty the min. rounding base is chosen. <br>
If the rounding base is too small, 2 times the base is tried.
<hr>
<i>26 June 2006:</i> For large codelists in GHMiter a large version of the program is available
<hr>
<i>26 June 2006:</i> Partitioning possible for rounding to round very big tables (More than 150K cells)<br>
always the first variable is broken (even when hierarchical). Also available in batch
<hr>
<i>22 February 2006:</i> Controlled rounding is available.
<hr>
<i>22 February 2006:</i> Compute missing Totals in batch is now possible (<READTABLE> 1).
<hr>
<i>22 February 2006:</i> Singleton preprocessor has been removed because of unsatisfactory results.
<hr>
<i>22 February 2006:</i> Audit procedure temporarily not available.
<hr>
<i>29 June 2005:</i> COST and COSTVAR may both be used in the tabular RDA file.
<hr>
<i>29 June 2005:</i> Scaling options for optimal solution have been improved.
<hr>
<i>29 June 2005:</i> Some improvements in testing the rda file for tables.
<hr>
<i>28 June 2005:</i> Tau cleans the TEMP-dir a bit when rounding with partitions.
<hr>
<i>28 June 2005:</i> The No-button in the TimeCheck program for rounding has been replaced by "Give current solution".
<hr>
<i>24 June 2005:</i> Cancel button added to the metadata screen.
<hr>
<i>22 June 2005:</i> Some additional information on the size, when rounding with partitions.
<hr>
<i>16 June 2005:</i> Reading tabular data has been improved. Adding spaces to hierarchical codes has been disabled.
<hr>
<i>16 June 2005:</i> Tau checks more on events during large runs, like reading tables, large optimisations etc.
<hr>
<i>16 June 2005:</i> Scaling the problems for the optimisation routines has been disabled, because it gave
unsatisfactory results with XPress.
<hr>
<i>26 May 2005:</i> When the request option is disabled, it could still be checked, because TAU remembered the status of a previous run.
<hr>
<i>19 May 2005:</i> When a table did not meet the standards τ-ARGUS gave a warning, but still continued and showed an empty table. <br>
This is no longer the case.
<hr>
<i>18 May 2005:</i> 1-dim tables in combination with optimal cell suppression failed sometimes.
<hr>
<i>18 May 2005:</i> Reading very large tables sometimes failed when also other processes were running.
<hr>
<i>16 May 2005:</i> Reading tables with largest contributors sometimes incorrectly reported that Sum(TopN) > Response. This happened due to precision problems.<br>
τ-ARGUS now also checks whether the topN is decreasing.
<hr>
<i>14 April 2005:</i> Reading tables ran into an endless loop if there were duplicated records.
<hr>
<i>12 March 2005:</i> Reports were not displayed correctly, when Firefox was the default browser.
<hr>
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