Mayonaka No Tantei Night Walker (OVA)
Rating Average: 3.2857Rating Stddev: 0.880630571852711
Review Count: 7
Existing Best Bet #: 3.61413138326946
( $rating_average - $rating_stddev ) + ( log($reviews) / log(5) )
( 3.2857 - 0.880630571852711 ) + ( 1.94591014905531 / 1.6094379124341 )
( 2.40506942814729 ) - 1.20906195512217
Proposed Best Bet #:
( ( $rating_average - ( $rating_stddev / 2) ) - ( ( $stddev==0 and $reviews<5)? .5: 0 ) * $similarity
( ( 3.2857 - 0.440315285926355 ) - 0 ) * $similarity
( 2.84538471407364 - 0 ) * $similarity
2.84538471407364 * $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: 7 - Modern, Dark, Vampires, Supernatural, OVA, Horror, 1998
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 |
|---|---|---|---|---|---|---|---|---|
| Hellsing Ultimate | 5 | 3.00 | 3.00 | 51% | 2.50 | 1.28 | 3.00 | 1.53 |
| Master of Mosquiton | 5 | 2.67 | 2.43 | 51% | 2.43 | 1.24 | 2.88 | 1.47 |
| Jigoku Shoujo Futakomori | 4 | 4.00 | 4.00 | 32% | 3.50 | 1.14 | 4.68 | 1.53 |
| Jigoku Shoujo | 4 | 3.60 | 3.36 | 32% | 3.36 | 1.10 | 4.11 | 1.34 |
| Rumik World: Warau Hyouteki | 5 | 2.25 | 2.03 | 51% | 2.03 | 1.04 | 2.68 | 1.37 |
| Kyuuketsuki Miyu (OVA) | 4 | 3.50 | 3.10 | 32% | 3.10 | 1.01 | 4.12 | 1.35 |
| Shihaisha no Tasogare | 5 | 2.33 | 1.86 | 51% | 1.86 | 0.95 | 2.50 | 1.28 |
| Blood Plus | 4 | 3.11 | 2.67 | 32% | 2.67 | 0.87 | 3.60 | 1.18 |
| H.O.T.D: Drifters of the Dead | 4 | 3.00 | 3.00 | 32% | 2.50 | 0.82 | 3.00 | 0.98 |
| Devilman Lady | 4 | 3.00 | 3.00 | 32% | 2.50 | 0.82 | 3.00 | 0.98 |
| Vampire Hunter | 4 | 3.00 | 3.00 | 32% | 2.50 | 0.82 | 3.00 | 0.98 |
| Hellsing: The Dawn | 5 | 2.00 | 2.00 | 51% | 1.50 | 0.77 | 2.00 | 1.02 |
| Yuugen Kaisha | 4 | 2.50 | 2.25 | 32% | 2.25 | 0.73 | 2.86 | 0.93 |
| Jin-Roh | 3 | 3.92 | 3.78 | 18% | 3.78 | 0.69 | 5.18 | 0.95 |
| Kaibutsu Oujo | 4 | 2.33 | 2.10 | 32% | 2.10 | 0.68 | 2.54 | 0.83 |
| Dance In The Vampire Bund | 4 | 2.25 | 2.03 | 32% | 2.03 | 0.66 | 2.68 | 0.87 |
| Vampire Hunter D: Bloodlust | 3 | 3.85 | 3.59 | 18% | 3.59 | 0.66 | 5.38 | 0.99 |
| MEMORIES | 3 | 3.75 | 3.53 | 18% | 3.53 | 0.65 | 4.18 | 0.77 |
| Interlude | 3 | 3.75 | 3.53 | 18% | 3.53 | 0.65 | 4.18 | 0.77 |
| Aniyome | 3 | 4.00 | 4.00 | 18% | 3.50 | 0.64 | 4.00 | 0.73 |
| Haiyore! Nyaruko-san W | 3 | 4.00 | 4.00 | 18% | 3.50 | 0.64 | 4.00 | 0.73 |
| Gosenzo San-E | 3 | 4.00 | 4.00 | 18% | 3.50 | 0.64 | 4.00 | 0.73 |
| Black Jack: Clinical Chart | 3 | 4.00 | 4.00 | 18% | 3.50 | 0.64 | 4.00 | 0.73 |
| Black Jack Final | 3 | 4.00 | 4.00 | 18% | 3.50 | 0.64 | 4.00 | 0.73 |
| Kigeki | 3 | 4.00 | 4.00 | 18% | 3.50 | 0.64 | 4.00 | 0.73 |
| Bubblegum Crisis Tokyo 2040 | 3 | 3.70 | 3.47 | 18% | 3.47 | 0.64 | 4.67 | 0.86 |
| X (TV) | 3 | 3.75 | 3.47 | 18% | 3.47 | 0.64 | 4.91 | 0.90 |
| Karas | 3 | 3.67 | 3.43 | 18% | 3.43 | 0.63 | 3.88 | 0.71 |
| Pet Shop of Horrors | 3 | 3.67 | 3.33 | 18% | 3.33 | 0.61 | 4.37 | 0.80 |
| Loveless (TV) | 3 | 3.50 | 3.25 | 18% | 3.25 | 0.60 | 3.43 | 0.63 |
| Ningyo no Kizu | 3 | 3.50 | 3.25 | 18% | 3.25 | 0.60 | 3.43 | 0.63 |
| Puella Magi Madoka Magica (TV) | 3 | 3.50 | 3.25 | 18% | 3.25 | 0.60 | 3.86 | 0.71 |
| 3x3 Eyes | 3 | 3.50 | 3.16 | 18% | 3.16 | 0.58 | 4.26 | 0.78 |
| Bakemonogatari | 3 | 3.50 | 3.12 | 18% | 3.12 | 0.57 | 3.85 | 0.71 |
| xxxHOLiC Kei | 3 | 3.33 | 3.10 | 18% | 3.10 | 0.57 | 3.54 | 0.65 |
| Nazo no Kanojo X: Nazo no Natsu Matsuri | 3 | 3.33 | 3.10 | 18% | 3.10 | 0.57 | 3.54 | 0.65 |
| Uta Kata | 3 | 3.33 | 3.10 | 18% | 3.10 | 0.57 | 3.54 | 0.65 |
| Monster | 3 | 3.50 | 3.07 | 18% | 3.07 | 0.56 | 3.50 | 0.64 |
| Honoo no Labyrinth | 3 | 3.25 | 3.03 | 18% | 3.03 | 0.56 | 3.68 | 0.68 |
| Chaos;Head | 3 | 3.25 | 3.03 | 18% | 3.03 | 0.56 | 3.68 | 0.68 |
| Kurozuka | 4 | 2.25 | 1.71 | 32% | 1.71 | 0.56 | 2.02 | 0.66 |
| Boogiepop wa Warawanai | 3 | 3.44 | 3.03 | 18% | 3.03 | 0.56 | 3.98 | 0.73 |
| sola | 3 | 3.40 | 3.00 | 18% | 3.00 | 0.55 | 3.60 | 0.66 |
| Aa! Megami-sama! OVA | 3 | 3.35 | 2.96 | 18% | 2.96 | 0.54 | 4.59 | 0.84 |
| Kyuuketsuki Miyu (TV) | 3 | 3.33 | 2.86 | 18% | 2.86 | 0.53 | 3.76 | 0.69 |
| Wind: A Breath of Heart TV | 4 | 2.00 | 1.59 | 32% | 1.59 | 0.52 | 1.87 | 0.61 |
| Shingetsutan Tsukihime | 3 | 3.12 | 2.73 | 18% | 2.73 | 0.50 | 3.64 | 0.67 |
| xxxHOLiC - Manatsu no Yoru no Yume | 3 | 3.17 | 2.72 | 18% | 2.72 | 0.50 | 3.38 | 0.62 |
| Tenshi Kinryouku | 3 | 3.09 | 2.69 | 18% | 2.69 | 0.49 | 3.79 | 0.70 |
| Ajin | 4 | 2.00 | 2.00 | 32% | 1.50 | 0.49 | 2.00 | 0.65 |
