Aa! Megami-sama! OVA
Rating Average: 3.3462Rating Stddev: 0.7816308243423681
Review Count: 26
Existing Best Bet #: 4.58893837489811
( $rating_average - $rating_stddev ) + ( log($reviews) / log(5) )
( 3.3462 - 0.7816308243423681 ) + ( 3.25809653802148 / 1.6094379124341 )
( 2.56456917565763 ) - 2.02436919924048
Proposed Best Bet #:
( ( $rating_average - ( $rating_stddev / 2) ) - ( ( $stddev==0 and $reviews<5)? .5: 0 ) * $similarity
( ( 3.3462 - 0.390815412171184 ) - 0 ) * $similarity
( 2.95538458782882 - 0 ) * $similarity
2.95538458782882 * $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: 12 - OVA, Romantic Comedy, Harem, Genie, 1993, Magic, Supernatural, Classic, Sports, Modern, Seinen, Deities
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 |
|---|---|---|---|---|---|---|---|---|
| Aa! Megami-sama! (2005) OVA | 6 | 3.33 | 3.10 | 25% | 3.10 | 0.77 | 3.54 | 0.89 |
| Aa! Megami-sama - Sorezore no Tsubasa OVA | 5 | 3.67 | 3.43 | 17% | 3.43 | 0.60 | 3.88 | 0.67 |
| Da Capo Second Season | 6 | 2.75 | 2.34 | 25% | 2.34 | 0.58 | 2.78 | 0.70 |
| Gekijouban Aa! Megami-sama! | 5 | 3.70 | 3.34 | 17% | 3.34 | 0.58 | 4.85 | 0.84 |
| Tenchi Muyou! Ryououki | 5 | 3.45 | 2.96 | 17% | 2.96 | 0.51 | 4.39 | 0.76 |
| School Days OVA | 5 | 2.75 | 2.53 | 17% | 2.53 | 0.44 | 3.18 | 0.55 |
| Ai Yori Aoshi - Dream Story | 5 | 3.00 | 2.50 | 17% | 2.50 | 0.43 | 2.86 | 0.50 |
| Sekirei ~Pure Engagement~ | 5 | 3.00 | 2.50 | 17% | 2.50 | 0.43 | 2.86 | 0.50 |
| Kanon: Kaza Hana | 5 | 2.60 | 2.36 | 17% | 2.36 | 0.41 | 3.11 | 0.54 |
| Shin Kimagure Orange Road: So Shite, Ano Natsu No Hajimari | 4 | 3.80 | 3.60 | 11% | 3.60 | 0.40 | 4.40 | 0.49 |
| Ai Yori Aoshi ~Enishi~ Miyuki | 4 | 3.75 | 3.53 | 11% | 3.53 | 0.39 | 4.18 | 0.46 |
| Haiyore! Nyaruko-san OVA | 4 | 4.00 | 4.00 | 11% | 3.50 | 0.39 | 4.00 | 0.44 |
| Kannagi | 5 | 2.57 | 2.21 | 17% | 2.21 | 0.38 | 3.05 | 0.53 |
| Shuffle! | 4 | 3.67 | 3.43 | 11% | 3.43 | 0.38 | 4.31 | 0.48 |
| Air TV | 4 | 3.67 | 3.43 | 11% | 3.43 | 0.38 | 4.31 | 0.48 |
| Kanon | 4 | 3.70 | 3.38 | 11% | 3.38 | 0.38 | 4.49 | 0.50 |
| Ai Yori Aoshi | 4 | 3.65 | 3.32 | 11% | 3.32 | 0.37 | 4.86 | 0.54 |
| Aa! Megami-sama! TV | 5 | 2.57 | 2.12 | 17% | 2.12 | 0.37 | 2.88 | 0.50 |
| Kami nomi zo Shiru Sekai II | 4 | 3.50 | 3.25 | 11% | 3.25 | 0.36 | 3.86 | 0.43 |
| To Aru Majutsu no Index II | 4 | 3.50 | 3.25 | 11% | 3.25 | 0.36 | 3.43 | 0.38 |
| Nazo no Kanojo X: Nazo no Natsu Matsuri | 4 | 3.33 | 3.10 | 11% | 3.10 | 0.34 | 3.54 | 0.39 |
| Maburaho | 4 | 3.43 | 3.06 | 11% | 3.06 | 0.34 | 3.91 | 0.43 |
| Love Hina Again | 4 | 3.40 | 3.04 | 11% | 3.04 | 0.34 | 4.37 | 0.49 |
| Honoo no Labyrinth | 4 | 3.25 | 3.03 | 11% | 3.03 | 0.34 | 3.68 | 0.41 |
| sola | 4 | 3.40 | 3.00 | 11% | 3.00 | 0.33 | 3.60 | 0.40 |
| Love Hina - Motoko's Choice | 4 | 3.33 | 2.96 | 11% | 2.96 | 0.33 | 3.70 | 0.41 |
| Maison Ikkoku | 4 | 3.22 | 2.91 | 11% | 2.91 | 0.32 | 3.96 | 0.44 |
| Ai Yori Aoshi ~Enishi~ | 4 | 3.14 | 2.82 | 11% | 2.82 | 0.31 | 3.71 | 0.41 |
| Zero no Tsukaima | 4 | 3.00 | 2.78 | 11% | 2.78 | 0.31 | 3.98 | 0.44 |
| To Aru Majutsu no Index | 4 | 3.00 | 2.71 | 11% | 2.71 | 0.30 | 3.54 | 0.39 |
| Omamori Himari | 4 | 3.00 | 2.65 | 11% | 2.65 | 0.29 | 3.15 | 0.35 |
| Tenjou Tenge: Ultimate Fight | 4 | 3.00 | 2.59 | 11% | 2.59 | 0.29 | 2.87 | 0.32 |
| Aa! Megami-sama - Sorezore no Tsubasa | 4 | 3.00 | 2.59 | 11% | 2.59 | 0.29 | 2.87 | 0.32 |
| Ichiban Ushiro no Daimaou | 4 | 3.00 | 2.59 | 11% | 2.59 | 0.29 | 3.30 | 0.37 |
| Zero no Tsukaima: Futatsuki no Kishi | 4 | 2.86 | 2.54 | 11% | 2.54 | 0.28 | 3.43 | 0.38 |
| To Heart 2 OVA | 4 | 3.00 | 3.00 | 11% | 2.50 | 0.28 | 3.00 | 0.33 |
| One: Kagayaku Kisetsu e | 4 | 3.00 | 3.00 | 11% | 2.50 | 0.28 | 3.00 | 0.33 |
| To Heart 2 adnext | 4 | 3.00 | 3.00 | 11% | 2.50 | 0.28 | 3.00 | 0.33 |
| Gokukoku no Brynhildr | 4 | 3.00 | 3.00 | 11% | 2.50 | 0.28 | 3.00 | 0.33 |
| Wind: A Breath of Heart - Omake OVA | 4 | 3.00 | 3.00 | 11% | 2.50 | 0.28 | 3.00 | 0.33 |
| Night Wizard | 4 | 3.00 | 3.00 | 11% | 2.50 | 0.28 | 3.43 | 0.38 |
| Big Order TV & OVA | 4 | 3.00 | 3.00 | 11% | 2.50 | 0.28 | 3.00 | 0.33 |
| Bewitching Nazomi | 4 | 3.00 | 3.00 | 11% | 2.50 | 0.28 | 3.00 | 0.33 |
| Zero no Tsukaima: Princess no Rondo | 4 | 3.00 | 2.50 | 11% | 2.50 | 0.28 | 2.43 | 0.27 |
| Aa! Megami-sama OVA 2011 | 4 | 3.00 | 3.00 | 11% | 2.50 | 0.28 | 3.00 | 0.33 |
| Da Capo | 4 | 2.80 | 2.43 | 11% | 2.43 | 0.27 | 3.05 | 0.34 |
| Hoshizora e Kakaru Hashi: Kakaru ka? Gakuensai ni Koi no Hashi | 5 | 2.00 | 2.00 | 17% | 1.50 | 0.26 | 2.00 | 0.35 |
| Zero no Tsukaima: Princess no Rondo OVA | 5 | 2.00 | 2.00 | 17% | 1.50 | 0.26 | 2.00 | 0.35 |
| Akane-Iro ni Somaru Saka (TV) | 4 | 2.75 | 2.34 | 11% | 2.34 | 0.26 | 2.78 | 0.31 |
| Ladies versus Butlers! | 4 | 2.50 | 2.25 | 11% | 2.25 | 0.25 | 2.86 | 0.32 |
