Ewbc2008

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Ewbc2008

  1. 1. Ratings on Information Organization Personal Value / Network Value Rating systems Wine blogs Good or Bad
  2. 2. Ratings Usage on Adegga.com <ul><li>Personal value </li></ul><ul><ul><li>Self-organization tool </li></ul></ul><ul><ul><li>Most users claim: </li></ul></ul><ul><ul><li>“ Wine notes are hard to write, rating is simple” </li></ul></ul><ul><ul><li>80% of “notes” include only a rating </li></ul></ul>
  3. 3. Ratings Usage on Adegga.com <ul><li>Network value </li></ul><ul><ul><li>Discover wines through </li></ul></ul><ul><ul><ul><li>Top Rated lists </li></ul></ul></ul><ul><ul><ul><li>Friends lists </li></ul></ul></ul><ul><ul><li>Apply ratings on wine recommendations </li></ul></ul><ul><ul><li>Ratings are very personal. </li></ul></ul><ul><ul><li>Bad for average ratings. </li></ul></ul>
  4. 4. Rating Systems <ul><li>Different countries => Different scales </li></ul><ul><li>Adegga.com </li></ul><ul><ul><li>Ratings in different scales (5, 10, 20 & 100) </li></ul></ul><ul><ul><li>Rating conversion (delongwine.com) Reading ratings in 5-star scale (to normalize) </li></ul></ul><ul><ul><li>Original scale & Converted scale </li></ul></ul>
  5. 5. Wine blogs <ul><li>Different bloggers => Different scales </li></ul><ul><li>Adegga.com </li></ul><ul><ul><li>Indexing 450 wine blogs </li></ul></ul><ul><ul><li>Many don’t use ratings </li></ul></ul><ul><ul><li>No standard rating system </li></ul></ul><ul><ul><li>Aggregation for network value is hard </li></ul></ul>
  6. 6. Ratings on Information Organization Good + Useful for personal value + Useful for network value Bad - No standard scale - Aggregation is hard

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