1. Expert Finding and Metadata Generation with Games with a Purpose Peter Dulačka Jakub Šimko

2. Problem Games with a purpose are generating data Expert data and wrong data cannot be distinguished and they are being treated the same way (trashed and ignored) Hypothesis: we can distinguish experts in games with a purpose and utilize them for more accurate / faster metadata discovery

3. Game and Purpose Validation/creation of generic music metadata (non-expert and expert players) Creation of non-trivial song relationships not easily discoverable by tag similarity (expert players only)

4. Expert Finding Solution Music Information Retrieval Internet radio (custom or existing) Discovering player’s expertise in specific music domain (primary objective) Means – Local library scanning / listening history (LastFM) – Fact questioning - quiz minigames – Crowdsouring