Ninja Scroll Dragon Gem
Rating Average: 3.3333Rating Stddev: 0.9428090415820634
Review Count: 3
Existing Best Bet #: 3.07309715290392
( $rating_average - $rating_stddev ) + ( log($reviews) / log(5) )
( 3.3333 - 0.9428090415820634 ) + ( 1.09861228866811 / 1.6094379124341 )
( 2.39049095841794 ) - 0.682606194485985
Proposed Best Bet #:
( ( $rating_average - ( $rating_stddev / 2) ) - ( ( $stddev==0 and $reviews<5)? .5: 0 ) * $similarity
( ( 3.3333 - 0.471404520791032 ) - 0 ) * $similarity
( 2.86189547920897 - 0 ) * $similarity
2.86189547920897 * $similarity
In English: Average rating minus half the standard deviation of the ratings, with a penalty of half a rating point if there are fewer then five reviews with no variation in their ratings.
Discussion: This uses the average rating as the base, lowering the overall rating based on the amount of variance in the ratings. Additionally it lowers the rating if only a few people have rated it and they've all given it the same score. Perhaps shows with few ratings shouldn't even show up in best bets.
Keywords: 8 - Action, Adventure, Fighting, Ninja, 2003, TV, Fantasy, Swordplay
For reference, Devil Doll's similarity calc is this:
( $matching_keys * ( $matching_keys / $total_keys ) * $total_keys ) / ( $total_keys * $total_keys )
| Title | Key Match | Rating | Rating - stddev | Devil Doll's Similarity Calc | New bbet | New bbet * Similarity | Old bbet | Old bbet * Similarity |
|---|---|---|---|---|---|---|---|---|
| Naruto | 7 | 3.62 | 3.20 | 76% | 3.20 | 2.45 | 4.87 | 3.73 |
| Juuni Kokuki | 6 | 3.90 | 3.75 | 56% | 3.75 | 2.11 | 5.03 | 2.83 |
| Mahou Shoujo Lyrical Nanoha A's | 6 | 3.75 | 3.53 | 56% | 3.53 | 1.99 | 4.18 | 2.35 |
| Shining Tears x Wind | 6 | 4.00 | 4.00 | 56% | 3.50 | 1.97 | 4.00 | 2.25 |
| Naruto Shippuuden (TV) | 6 | 4.00 | 4.00 | 56% | 3.50 | 1.97 | 4.00 | 2.25 |
| Kiba | 6 | 3.50 | 3.25 | 56% | 3.25 | 1.83 | 3.43 | 1.93 |
| Log Horizon | 7 | 2.50 | 2.25 | 76% | 2.25 | 1.72 | 2.43 | 1.86 |
| Tears to Tiara | 6 | 3.25 | 3.03 | 56% | 3.03 | 1.71 | 3.68 | 2.07 |
| Ninja Scroll | 6 | 3.42 | 2.93 | 56% | 2.93 | 1.65 | 4.26 | 2.40 |
| Kaze no Stigma | 6 | 3.17 | 2.72 | 56% | 2.72 | 1.53 | 3.38 | 1.90 |
| The Sacred Blacksmith | 6 | 3.00 | 2.65 | 56% | 2.65 | 1.49 | 3.15 | 1.77 |
| Ichiban Ushiro no Daimaou | 6 | 3.00 | 2.59 | 56% | 2.59 | 1.46 | 3.30 | 1.85 |
| Chrono Crusade | 5 | 3.89 | 3.73 | 39% | 3.73 | 1.46 | 4.94 | 1.93 |
| Scrapped Princess | 5 | 3.88 | 3.71 | 39% | 3.71 | 1.45 | 4.84 | 1.89 |
| Kyou Kara Maou | 6 | 3.00 | 3.00 | 56% | 2.50 | 1.41 | 3.00 | 1.69 |
| Basilisk - Kouga Ninpou Chou | 5 | 3.75 | 3.53 | 39% | 3.53 | 1.38 | 4.18 | 1.63 |
| Mahou Shoujo Lyrical Nanoha | 5 | 3.75 | 3.53 | 39% | 3.53 | 1.38 | 4.18 | 1.63 |
| Avatar: The Last Airbender - Season 1 | 5 | 4.00 | 4.00 | 39% | 3.50 | 1.37 | 4.43 | 1.73 |
| Avatar: The Last Airbender - Season 3 | 5 | 4.00 | 4.00 | 39% | 3.50 | 1.37 | 4.68 | 1.83 |
| Saiyuuki Reload Gunlock | 5 | 4.00 | 4.00 | 39% | 3.50 | 1.37 | 4.00 | 1.56 |
| Avatar: The Last Airbender - Season 2 | 5 | 4.00 | 4.00 | 39% | 3.50 | 1.37 | 4.00 | 1.56 |
| Nagasarete Airantou | 5 | 3.50 | 3.25 | 39% | 3.25 | 1.27 | 4.11 | 1.61 |
| Mousou Dairinin | 5 | 3.50 | 3.25 | 39% | 3.25 | 1.27 | 3.43 | 1.34 |
| Tate no Yuusha no Nariagari | 5 | 3.50 | 3.25 | 39% | 3.25 | 1.27 | 3.43 | 1.34 |
| Hai to Gensou no Grimgar | 5 | 3.50 | 3.25 | 39% | 3.25 | 1.27 | 3.43 | 1.34 |
| Tenkuu no Escaflowne | 5 | 3.56 | 3.23 | 39% | 3.23 | 1.26 | 5.06 | 1.98 |
| Hagane no Renkinjutsushi | 5 | 3.57 | 3.21 | 39% | 3.21 | 1.25 | 4.48 | 1.75 |
| Samurai Deeper Kyo | 5 | 3.50 | 3.10 | 39% | 3.10 | 1.21 | 4.12 | 1.61 |
| Queen's Blade: Gyokuza no Tsugumono | 6 | 2.33 | 2.10 | 56% | 2.10 | 1.18 | 2.54 | 1.43 |
| Samurai Champloo | 5 | 3.33 | 3.00 | 39% | 3.00 | 1.17 | 4.03 | 1.57 |
| Mahou Senshi Riui | 5 | 3.29 | 2.94 | 39% | 2.94 | 1.15 | 3.79 | 1.48 |
| Bleach | 5 | 3.43 | 2.90 | 39% | 2.90 | 1.13 | 3.59 | 1.40 |
| Seirei no Moribito | 5 | 3.33 | 2.86 | 39% | 2.86 | 1.12 | 3.07 | 1.20 |
| Zero no Tsukaima | 5 | 3.00 | 2.78 | 39% | 2.78 | 1.08 | 3.98 | 1.56 |
| Erementar Gerad (TV) | 5 | 3.00 | 2.59 | 39% | 2.59 | 1.01 | 2.87 | 1.12 |
| G-on Riders | 5 | 3.00 | 2.59 | 39% | 2.59 | 1.01 | 2.87 | 1.12 |
| .hack//Tasogare no Udewa Densetsu | 5 | 3.00 | 2.59 | 39% | 2.59 | 1.01 | 3.30 | 1.29 |
| Roudosu Tou Senki: Eiyuu Kishi Den | 5 | 3.00 | 2.58 | 39% | 2.58 | 1.01 | 3.79 | 1.48 |
| High School of the Dead | 5 | 3.00 | 2.55 | 39% | 2.55 | 1.00 | 3.11 | 1.21 |
| Boukyaku no Senritsu | 5 | 3.00 | 2.55 | 39% | 2.55 | 1.00 | 3.11 | 1.21 |
| Zero no Tsukaima: Futatsuki no Kishi | 5 | 2.86 | 2.54 | 39% | 2.54 | 0.99 | 3.43 | 1.34 |
| Ixion Saga DT | 5 | 3.00 | 3.00 | 39% | 2.50 | 0.98 | 3.00 | 1.17 |
| Selector Spread WIXOSS | 5 | 3.00 | 3.00 | 39% | 2.50 | 0.98 | 3.00 | 1.17 |
| Claymore | 5 | 3.00 | 3.00 | 39% | 2.50 | 0.98 | 3.68 | 1.44 |
| Needless | 5 | 3.00 | 2.50 | 39% | 2.50 | 0.98 | 2.86 | 1.12 |
| Shingeki no Kyojin | 5 | 3.00 | 3.00 | 39% | 2.50 | 0.98 | 3.43 | 1.34 |
| Druaga no Tou: Sword of Uruk | 5 | 3.00 | 3.00 | 39% | 2.50 | 0.98 | 3.00 | 1.17 |
| JoJo no Kimyou na Bouken: Stardust Crusaders Egypt-hen | 5 | 3.00 | 3.00 | 39% | 2.50 | 0.98 | 3.00 | 1.17 |
| Angel Beats! | 5 | 2.91 | 2.46 | 39% | 2.46 | 0.96 | 3.50 | 1.37 |
| Kurozuka | 6 | 2.25 | 1.71 | 56% | 1.71 | 0.96 | 2.02 | 1.14 |
