WC3 data extraction and analysis

Overview

This project fixes a broken rating system used on the w3a and Bnet servers by retroactively implimenting a modified Elo rating system. The resulting Elo-based system assigns ratings that are relatively insensitive to the skill of one's opponents (unlike win percentage, for example) and provides a useful basis for matchmaking in online play.

For discussion of the problems with w3a rating system, see this thread.

For an introduction to the Elo system, see its wiki.

Results and application

Up-to-date player ratings for the w3a server can be found on this spreadsheet. Launch post.

EDIT: With W3A's decline, this page is no longer updated.

For results and applications of earlier versions of this code, see tmahlstrom's posts on the following topics:

• Recalculated player ratings using the Elo system. Link
• Comparison of Elo ratings and player win percentage. Link
• Elo history of individual player accounts. Link
• Elo-based comparison of the different races in WC3. Link