Youma
Rating Average: 2.7500Rating Stddev: 0.82915619758885
Review Count: 4
Existing Best Bet #: 2.78219691855794
( $rating_average - $rating_stddev ) + ( log($reviews) / log(5) )
( 2.7500 - 0.82915619758885 ) + ( 1.38629436111989 / 1.6094379124341 )
( 1.92084380241115 ) - 0.861353116146786
Proposed Best Bet #:
( ( $rating_average - ( $rating_stddev / 2) ) - ( ( $stddev==0 and $reviews<5)? .5: 0 ) * $similarity
( ( 2.7500 - 0.414578098794425 ) - 0 ) * $similarity
( 2.33542190120558 - 0 ) * $similarity
2.33542190120558 * $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: 13 - OVA, Fantasy, Horror, Dark, Ninja, Historical, Occult, Martial Arts, Creepy, 1989, Swordplay, Shoujo, Assassin(s)
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 |
|---|---|---|---|---|---|---|---|---|
| Cossette no Shouzou | 6 | 3.00 | 2.65 | 21% | 2.65 | 0.56 | 3.15 | 0.67 |
| Kigeki | 5 | 4.00 | 4.00 | 14% | 3.50 | 0.52 | 4.00 | 0.59 |
| Nagasarete Airantou | 5 | 3.50 | 3.25 | 14% | 3.25 | 0.48 | 4.11 | 0.61 |
| Kyuuketsuki Miyu (OVA) | 5 | 3.50 | 3.10 | 14% | 3.10 | 0.46 | 4.12 | 0.61 |
| Bleach | 5 | 3.43 | 2.90 | 14% | 2.90 | 0.43 | 3.59 | 0.53 |
| Boukyaku no Senritsu | 5 | 3.00 | 2.55 | 14% | 2.55 | 0.38 | 3.11 | 0.46 |
| Kurozuka | 6 | 2.25 | 1.71 | 21% | 1.71 | 0.36 | 2.02 | 0.43 |
| Chrono Crusade | 4 | 3.89 | 3.73 | 9% | 3.73 | 0.35 | 4.94 | 0.47 |
| La Blue Girl | 4 | 3.80 | 3.60 | 9% | 3.60 | 0.34 | 4.40 | 0.42 |
| Basilisk - Kouga Ninpou Chou | 4 | 3.75 | 3.53 | 9% | 3.53 | 0.33 | 4.18 | 0.40 |
| Interlude | 4 | 3.75 | 3.53 | 9% | 3.53 | 0.33 | 4.18 | 0.40 |
| Le Chevalier D`Eon | 4 | 4.00 | 4.00 | 9% | 3.50 | 0.33 | 4.00 | 0.38 |
| Jigoku Shoujo | 4 | 3.60 | 3.36 | 9% | 3.36 | 0.32 | 4.11 | 0.39 |
| Ningyo no Kizu | 4 | 3.50 | 3.25 | 9% | 3.25 | 0.31 | 3.43 | 0.32 |
| 3x3 Eyes | 4 | 3.50 | 3.16 | 9% | 3.16 | 0.30 | 4.26 | 0.40 |
| Samurai Champloo | 4 | 3.33 | 3.00 | 9% | 3.00 | 0.28 | 4.03 | 0.38 |
| Kyuuketsuki Miyu (TV) | 4 | 3.33 | 2.86 | 9% | 2.86 | 0.27 | 3.76 | 0.36 |
| Tenshi Kinryouku | 4 | 3.09 | 2.69 | 9% | 2.69 | 0.26 | 3.79 | 0.36 |
| Hakkenden | 4 | 3.00 | 2.68 | 9% | 2.68 | 0.25 | 3.37 | 0.32 |
| Bastard!! Ankoku no Hakai Kami | 4 | 3.09 | 2.59 | 9% | 2.59 | 0.25 | 3.58 | 0.34 |
| Vampire Hunter | 4 | 3.00 | 3.00 | 9% | 2.50 | 0.24 | 3.00 | 0.28 |
| Mermaid Forest OAV | 4 | 3.00 | 3.00 | 9% | 2.50 | 0.24 | 3.00 | 0.28 |
| Dragon Rider | 4 | 3.00 | 3.00 | 9% | 2.50 | 0.24 | 3.43 | 0.32 |
| Jigoku Shoujo: Mitsuganae | 4 | 3.00 | 3.00 | 9% | 2.50 | 0.24 | 3.00 | 0.28 |
| Oedo wa Nemurenai! | 5 | 2.00 | 2.00 | 14% | 1.50 | 0.22 | 2.00 | 0.30 |
| Tokyo Majin Gakuen Kenpuchou: Tou | 4 | 2.75 | 2.34 | 9% | 2.34 | 0.22 | 2.78 | 0.26 |
| Silent Mobius The Motion Picture 2 | 4 | 2.50 | 2.25 | 9% | 2.25 | 0.21 | 2.43 | 0.23 |
| Rurouni Kenshin: Meiji Kenkaku Romantan - Tsuiokuhen | 3 | 3.94 | 3.79 | 5% | 3.79 | 0.20 | 6.11 | 0.33 |
| Juuni Kokuki | 3 | 3.90 | 3.75 | 5% | 3.75 | 0.20 | 5.03 | 0.27 |
| Rozen Maiden | 3 | 3.75 | 3.53 | 5% | 3.53 | 0.19 | 4.61 | 0.25 |
| Shura No Toki | 3 | 4.00 | 4.00 | 5% | 3.50 | 0.19 | 4.43 | 0.24 |
| Death Note | 3 | 4.00 | 4.00 | 5% | 3.50 | 0.19 | 4.86 | 0.26 |
| Naruto Shippuuden (TV) | 3 | 4.00 | 4.00 | 5% | 3.50 | 0.19 | 4.00 | 0.21 |
| Fullmetal Alchemist OVA1: the Blind Alchemist | 3 | 4.00 | 4.00 | 5% | 3.50 | 0.19 | 4.00 | 0.21 |
| Gekijō-ban Mahō Shōjo Madoka Magica Kōhen: Eien no Monogatari | 3 | 4.00 | 4.00 | 5% | 3.50 | 0.19 | 4.00 | 0.21 |
| Jigoku Sensei Nube | 3 | 4.00 | 4.00 | 5% | 3.50 | 0.19 | 4.00 | 0.21 |
| Jigoku Shoujo Futakomori | 3 | 4.00 | 4.00 | 5% | 3.50 | 0.19 | 4.68 | 0.25 |
| Hagane no Renkinjutsushi OVA (03): Shishou (Sensei) Monogatari | 3 | 4.00 | 4.00 | 5% | 3.50 | 0.19 | 4.00 | 0.21 |
| X (TV) | 3 | 3.75 | 3.47 | 5% | 3.47 | 0.18 | 4.91 | 0.26 |
| Karas | 3 | 3.67 | 3.43 | 5% | 3.43 | 0.18 | 3.88 | 0.21 |
| Legend of Basara | 3 | 3.67 | 3.43 | 5% | 3.43 | 0.18 | 3.88 | 0.21 |
| Lodoss Tou Senki (OAV) | 3 | 3.67 | 3.43 | 5% | 3.43 | 0.18 | 4.74 | 0.25 |
| Shihaisha no Tasogare | 4 | 2.33 | 1.86 | 9% | 1.86 | 0.18 | 2.50 | 0.24 |
| Demon City Shinjuku | 4 | 2.33 | 1.86 | 9% | 1.86 | 0.18 | 2.07 | 0.20 |
| Puella Magi Madoka Magica (TV) | 3 | 3.50 | 3.25 | 5% | 3.25 | 0.17 | 3.86 | 0.21 |
| Versailles no Bara | 3 | 3.50 | 3.25 | 5% | 3.25 | 0.17 | 3.86 | 0.21 |
| Tenkuu no Escaflowne | 3 | 3.56 | 3.23 | 5% | 3.23 | 0.17 | 5.06 | 0.27 |
| Hagane no Renkinjutsushi | 3 | 3.57 | 3.21 | 5% | 3.21 | 0.17 | 4.48 | 0.24 |
| Naruto | 3 | 3.62 | 3.20 | 5% | 3.20 | 0.17 | 4.87 | 0.26 |
| Magic Knight Rayearth | 3 | 3.40 | 3.16 | 5% | 3.16 | 0.17 | 4.34 | 0.23 |
