Dota 2 winning team prediction!

Some feature ideas:

• Heroes dummies
• Teams dummies
• is_persistent_team (has team_id)
• Amount of days since the beginning
• Heroes synergies ("heatmaps") for pairs, triples, etc.
• Team historical stats: farming, winning, etc.
• Players historical stats
• Counting teams as a set of players, because there are a lot of teams without team_id (they are forming just for play)
• Offset feature (because we see radiant advantage)
• Team and player popularity

The plan is: add feature by feature :|