To Aru Kagaku no Railgun
Rating Average: 3.3333Rating Stddev: 0.4714045207910316
Review Count: 6
Existing Best Bet #: 3.97517823176835
( $rating_average - $rating_stddev ) + ( log($reviews) / log(5) )
( 3.3333 - 0.4714045207910316 ) + ( 1.79175946922805 / 1.6094379124341 )
( 2.86189547920897 ) - 1.11328275255938
Proposed Best Bet #:
( ( $rating_average - ( $rating_stddev / 2) ) - ( ( $stddev==0 and $reviews<5)? .5: 0 ) * $similarity
( ( 3.3333 - 0.235702260395516 ) - 0 ) * $similarity
( 3.09759773960448 - 0 ) * $similarity
3.09759773960448 * $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 - 2009, TV, Fantasy, Action, Adventure, Supernatural, Violent, Ecchi, Yuri, Seinen, Modern, Psychics
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 |
|---|---|---|---|---|---|---|---|---|
| Tears to Tiara | 8 | 3.25 | 3.03 | 44% | 3.03 | 1.35 | 3.68 | 1.63 |
| The Sacred Blacksmith | 8 | 3.00 | 2.65 | 44% | 2.65 | 1.18 | 3.15 | 1.40 |
| Needless | 8 | 3.00 | 2.50 | 44% | 2.50 | 1.11 | 2.86 | 1.27 |
| Full Metal Panic! The Second Raid | 6 | 4.00 | 4.00 | 25% | 4.00 | 1.00 | 5.29 | 1.32 |
| Juuni Kokuki | 6 | 3.90 | 3.75 | 25% | 3.75 | 0.94 | 5.03 | 1.26 |
| To Aru Majutsu no Index | 7 | 3.00 | 2.71 | 34% | 2.71 | 0.92 | 3.54 | 1.20 |
| Omamori Himari | 7 | 3.00 | 2.65 | 34% | 2.65 | 0.90 | 3.15 | 1.07 |
| Darker than Black - Kuro no Keiyakusha | 6 | 3.80 | 3.60 | 25% | 3.60 | 0.90 | 4.40 | 1.10 |
| Rozen Maiden | 6 | 3.75 | 3.53 | 25% | 3.53 | 0.88 | 4.61 | 1.15 |
| Interlude | 6 | 3.75 | 3.53 | 25% | 3.53 | 0.88 | 4.18 | 1.04 |
| Ichiban Ushiro no Daimaou | 7 | 3.00 | 2.59 | 34% | 2.59 | 0.88 | 3.30 | 1.12 |
| Naruto Shippuuden (TV) | 6 | 4.00 | 4.00 | 25% | 3.50 | 0.88 | 4.00 | 1.00 |
| Hanamonogatari | 6 | 4.00 | 4.00 | 25% | 3.50 | 0.88 | 4.00 | 1.00 |
| High School of the Dead | 7 | 3.00 | 2.55 | 34% | 2.55 | 0.87 | 3.11 | 1.06 |
| X (TV) | 6 | 3.75 | 3.47 | 25% | 3.47 | 0.87 | 4.91 | 1.23 |
| Tokyo Ghoul √A | 7 | 3.00 | 3.00 | 34% | 2.50 | 0.85 | 3.00 | 1.02 |
| Loveless (TV) | 6 | 3.50 | 3.25 | 25% | 3.25 | 0.81 | 3.43 | 0.86 |
| Kiba | 6 | 3.50 | 3.25 | 25% | 3.25 | 0.81 | 3.43 | 0.86 |
| To Aru Majutsu no Index II | 6 | 3.50 | 3.25 | 25% | 3.25 | 0.81 | 3.43 | 0.86 |
| Uta Kata | 6 | 3.33 | 3.10 | 25% | 3.10 | 0.77 | 3.54 | 0.89 |
| Elfen Lied | 6 | 3.50 | 3.07 | 25% | 3.07 | 0.77 | 4.18 | 1.04 |
| sola | 6 | 3.40 | 3.00 | 25% | 3.00 | 0.75 | 3.60 | 0.90 |
| Bleach | 6 | 3.43 | 2.90 | 25% | 2.90 | 0.73 | 3.59 | 0.90 |
| Queen's Blade: Gyokuza no Tsugumono | 7 | 2.33 | 2.10 | 34% | 2.10 | 0.71 | 2.54 | 0.87 |
| Afro Samurai: Resurrection | 7 | 2.33 | 2.10 | 34% | 2.10 | 0.71 | 2.54 | 0.87 |
| Dance In The Vampire Bund | 7 | 2.25 | 2.03 | 34% | 2.03 | 0.69 | 2.68 | 0.91 |
| Kaze no Stigma | 6 | 3.17 | 2.72 | 25% | 2.72 | 0.68 | 3.38 | 0.85 |
| Chrono Crusade | 5 | 3.89 | 3.73 | 17% | 3.73 | 0.65 | 4.94 | 0.86 |
| Ikkitousen: Dragon Destiny | 6 | 3.00 | 2.55 | 25% | 2.55 | 0.64 | 3.11 | 0.78 |
| Sora no Otoshimono | 6 | 3.00 | 2.55 | 25% | 2.55 | 0.64 | 3.11 | 0.78 |
| Narutaru ~Mukuro naru hoshi Tama taru ko~ | 6 | 3.00 | 3.00 | 25% | 2.50 | 0.62 | 3.86 | 0.97 |
| Sekirei ~Pure Engagement~ | 6 | 3.00 | 2.50 | 25% | 2.50 | 0.62 | 2.86 | 0.72 |
| Shinrei Tantei Yakumo | 6 | 3.00 | 3.00 | 25% | 2.50 | 0.62 | 3.00 | 0.75 |
| Chainsaw Man | 6 | 3.00 | 3.00 | 25% | 2.50 | 0.62 | 3.43 | 0.86 |
| Persona 4 the Golden Animation | 6 | 3.00 | 3.00 | 25% | 2.50 | 0.62 | 3.00 | 0.75 |
| Tokyo Ravens | 6 | 3.00 | 3.00 | 25% | 2.50 | 0.62 | 3.00 | 0.75 |
| CANAAN | 6 | 3.00 | 3.00 | 25% | 2.50 | 0.62 | 3.00 | 0.75 |
| Durarara!! x2 Ketsu | 6 | 3.00 | 3.00 | 25% | 2.50 | 0.62 | 3.00 | 0.75 |
| JoJo no Kimyou na Bouken: Stardust Crusaders Egypt-hen | 6 | 3.00 | 3.00 | 25% | 2.50 | 0.62 | 3.00 | 0.75 |
| Umineko no Naku Koro ni | 6 | 3.00 | 3.00 | 25% | 2.50 | 0.62 | 3.00 | 0.75 |
| Black Lagoon | 5 | 3.80 | 3.60 | 17% | 3.60 | 0.62 | 4.40 | 0.76 |
| Angel Beats! | 6 | 2.91 | 2.46 | 25% | 2.46 | 0.61 | 3.50 | 0.87 |
| Durarara!! | 5 | 3.75 | 3.53 | 17% | 3.53 | 0.61 | 4.18 | 0.73 |
| Kurokami The Animation | 6 | 2.67 | 2.43 | 25% | 2.43 | 0.61 | 2.88 | 0.72 |
| Fairy Tail | 5 | 4.00 | 4.00 | 17% | 3.50 | 0.61 | 4.00 | 0.69 |
| Kemono Jihen | 5 | 4.00 | 4.00 | 17% | 3.50 | 0.61 | 4.00 | 0.69 |
| Monogatari Series: Second Season | 5 | 4.00 | 4.00 | 17% | 3.50 | 0.61 | 4.00 | 0.69 |
| Hakkenden: Touhou Hakken Ibun | 5 | 4.00 | 4.00 | 17% | 3.50 | 0.61 | 4.00 | 0.69 |
| Akiba Maid Sensou | 5 | 4.00 | 4.00 | 17% | 3.50 | 0.61 | 4.00 | 0.69 |
| Kizumonogatari | 5 | 4.00 | 4.00 | 17% | 3.50 | 0.61 | 4.00 | 0.69 |
