Ninja Scroll
Rating Average: 3.4211Rating Stddev: 0.9902572485382515
Review Count: 19
Existing Best Bet #: 4.2603255518969
( $rating_average - $rating_stddev ) + ( log($reviews) / log(5) )
( 3.4211 - 0.9902572485382515 ) + ( 2.94443897916644 / 1.6094379124341 )
( 2.43084275146175 ) - 1.82948280043515
Proposed Best Bet #:
( ( $rating_average - ( $rating_stddev / 2) ) - ( ( $stddev==0 and $reviews<5)? .5: 0 ) * $similarity
( ( 3.4211 - 0.495128624269126 ) - 0 ) * $similarity
( 2.92597137573087 - 0 ) * $similarity
2.92597137573087 * $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: 9 - Ninja, Fighting, Action, Ecchi, 1993, Fantasy, Adventure, Swordplay, Movie
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 |
|---|---|---|---|---|---|---|---|---|
| Ninja Scroll Dragon Gem | 6 | 3.33 | 2.86 | 44% | 2.86 | 1.27 | 3.07 | 1.37 |
| Ichiban Ushiro no Daimaou | 6 | 3.00 | 2.59 | 44% | 2.59 | 1.15 | 3.30 | 1.47 |
| Mahou Shoujo Lyrical Nanoha A's | 5 | 3.75 | 3.53 | 30% | 3.53 | 1.09 | 4.18 | 1.29 |
| Sutorenja Mukoh Hadan | 6 | 2.67 | 2.43 | 44% | 2.43 | 1.08 | 2.88 | 1.28 |
| Mahou Shoujo Lyrical Nanoha The MOVIE 1st | 5 | 4.00 | 4.00 | 30% | 3.50 | 1.08 | 4.00 | 1.23 |
| Shining Tears x Wind | 5 | 4.00 | 4.00 | 30% | 3.50 | 1.08 | 4.00 | 1.23 |
| Naruto Shippuuden (TV) | 5 | 4.00 | 4.00 | 30% | 3.50 | 1.08 | 4.00 | 1.23 |
| Casshern: The Last Day on Earth | 5 | 4.00 | 4.00 | 30% | 3.50 | 1.08 | 4.00 | 1.23 |
| Kiba | 5 | 3.50 | 3.25 | 30% | 3.25 | 1.00 | 3.43 | 1.06 |
| Log Horizon | 6 | 2.50 | 2.25 | 44% | 2.25 | 1.00 | 2.43 | 1.08 |
| Naruto | 5 | 3.62 | 3.20 | 30% | 3.20 | 0.99 | 4.87 | 1.50 |
| Honoo no Labyrinth | 5 | 3.25 | 3.03 | 30% | 3.03 | 0.94 | 3.68 | 1.14 |
| Tears to Tiara | 5 | 3.25 | 3.03 | 30% | 3.03 | 0.94 | 3.68 | 1.14 |
| Queen's Blade: Gyokuza no Tsugumono | 6 | 2.33 | 2.10 | 44% | 2.10 | 0.93 | 2.54 | 1.13 |
| Afro Samurai: Resurrection | 6 | 2.33 | 2.10 | 44% | 2.10 | 0.93 | 2.54 | 1.13 |
| Kaze no Stigma | 5 | 3.17 | 2.72 | 30% | 2.72 | 0.84 | 3.38 | 1.04 |
| The Sacred Blacksmith | 5 | 3.00 | 2.65 | 30% | 2.65 | 0.82 | 3.15 | 0.97 |
| G-on Riders | 5 | 3.00 | 2.59 | 30% | 2.59 | 0.80 | 2.87 | 0.88 |
| High School of the Dead | 5 | 3.00 | 2.55 | 30% | 2.55 | 0.79 | 3.11 | 0.96 |
| Juuni Kokuki | 4 | 3.90 | 3.75 | 19% | 3.75 | 0.74 | 5.03 | 0.99 |
| Basilisk - Kouga Ninpou Chou | 4 | 3.75 | 3.53 | 19% | 3.53 | 0.70 | 4.18 | 0.83 |
| Mahou Shoujo Lyrical Nanoha | 4 | 3.75 | 3.53 | 19% | 3.53 | 0.70 | 4.18 | 0.83 |
| Highlander: The Search for Vengeance | 5 | 2.50 | 2.25 | 30% | 2.25 | 0.69 | 2.43 | 0.75 |
| Hagane no Renkinjutsushi OVA (03): Shishou (Sensei) Monogatari | 4 | 4.00 | 4.00 | 19% | 3.50 | 0.69 | 4.00 | 0.79 |
| Saiyuuki Reload Gunlock | 4 | 4.00 | 4.00 | 19% | 3.50 | 0.69 | 4.00 | 0.79 |
| Avatar: The Last Airbender - Season 1 | 4 | 4.00 | 4.00 | 19% | 3.50 | 0.69 | 4.43 | 0.88 |
| Avatar: The Last Airbender - Season 3 | 4 | 4.00 | 4.00 | 19% | 3.50 | 0.69 | 4.68 | 0.92 |
| Kurenai no Buta | 4 | 4.00 | 4.00 | 19% | 3.50 | 0.69 | 4.86 | 0.96 |
| Avatar: The Last Airbender - Season 2 | 4 | 4.00 | 4.00 | 19% | 3.50 | 0.69 | 4.00 | 0.79 |
| Kizumonogatari | 4 | 4.00 | 4.00 | 19% | 3.50 | 0.69 | 4.00 | 0.79 |
| One Piece: Karakuri Shiro no Mecha Kyohei | 4 | 4.00 | 4.00 | 19% | 3.50 | 0.69 | 4.00 | 0.79 |
| Karas | 4 | 3.67 | 3.43 | 19% | 3.43 | 0.68 | 3.88 | 0.77 |
| Lodoss Tou Senki (OAV) | 4 | 3.67 | 3.43 | 19% | 3.43 | 0.68 | 4.74 | 0.94 |
| Queen's Blade: Rurou no Senshi | 5 | 2.67 | 2.20 | 30% | 2.20 | 0.68 | 2.41 | 0.74 |
| Princess Lover! | 5 | 2.67 | 2.20 | 30% | 2.20 | 0.68 | 2.41 | 0.74 |
| Gekijouban Naruto: Daigekitotsu! Maboroshi no Chiteiiseki Dattebayo! | 6 | 2.00 | 2.00 | 44% | 1.50 | 0.67 | 2.00 | 0.89 |
| Dragon Ball Z | 5 | 2.67 | 2.13 | 30% | 2.13 | 0.66 | 3.27 | 1.01 |
| Rupan Sansei: Fuma Chizoku no Imboo | 4 | 3.50 | 3.25 | 19% | 3.25 | 0.64 | 3.86 | 0.76 |
| Tate no Yuusha no Nariagari | 4 | 3.50 | 3.25 | 19% | 3.25 | 0.64 | 3.43 | 0.68 |
| Sekirei | 4 | 3.50 | 3.25 | 19% | 3.25 | 0.64 | 4.11 | 0.81 |
| Hai to Gensou no Grimgar | 4 | 3.50 | 3.25 | 19% | 3.25 | 0.64 | 3.43 | 0.68 |
| Mousou Dairinin | 4 | 3.50 | 3.25 | 19% | 3.25 | 0.64 | 3.43 | 0.68 |
| Nagasarete Airantou | 4 | 3.50 | 3.25 | 19% | 3.25 | 0.64 | 4.11 | 0.81 |
| Tenkuu no Escaflowne | 4 | 3.56 | 3.23 | 19% | 3.23 | 0.64 | 5.06 | 1.00 |
| To Aru Kagaku no Railgun | 4 | 3.33 | 3.10 | 19% | 3.10 | 0.61 | 3.98 | 0.79 |
| Samurai Deeper Kyo | 4 | 3.50 | 3.10 | 19% | 3.10 | 0.61 | 4.12 | 0.81 |
| Ranma ½ | 4 | 3.44 | 3.03 | 19% | 3.03 | 0.60 | 4.41 | 0.87 |
| Mamono Hunter Youko | 4 | 3.00 | 3.00 | 19% | 3.00 | 0.59 | 4.00 | 0.79 |
| Samurai Champloo | 4 | 3.33 | 3.00 | 19% | 3.00 | 0.59 | 4.03 | 0.80 |
| Mahou Senshi Riui | 4 | 3.29 | 2.94 | 19% | 2.94 | 0.58 | 3.79 | 0.75 |
