Best bets for:

Yesterday o Utatte

Rating Average: 2.5000
Rating Stddev: 0.5
Review Count: 2
Existing Best Bet #: 2.43067655807339
( $rating_average - $rating_stddev ) + ( log($reviews) / log(5) )
( 2.5000 - 0.5 ) + ( 0.693147180559945 / 1.6094379124341 )
( 2 ) - 0.430676558073393
Proposed Best Bet #:
( ( $rating_average - ( $rating_stddev / 2) ) - ( ( $stddev==0 and $reviews<5)? .5: 0 ) * $similarity
( ( 2.5000 - 0.25 ) - 0 ) * $similarity
( 2.25 - 0 ) * $similarity
2.25 * $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: 8 - 2020, Drama, Romance, TV, Modern, Seinen, College, Slice of Life

For reference, Devil Doll's similarity calc is this:
( $matching_keys * ( $matching_keys / $total_keys ) * $total_keys ) / ( $total_keys * $total_keys )
Pool of potential series:
TitleKey MatchRatingRating - stddevDevil Doll's Similarity CalcNew bbetNew bbet * SimilarityOld bbetOld bbet * Similarity
Ai Yori Aoshi 6 3.65 3.32 56% 3.32 1.87 4.86 2.73
Koi Kaze 6 3.67 3.29 56% 3.29 1.85 4.03 2.27
Itazura na Kiss 6 3.50 3.12 56% 3.12 1.75 3.85 2.17
Clannad: After Story 6 3.33 3.10 56% 3.10 1.74 3.98 2.24
Hachimitsu to Kuroba 6 3.43 3.06 56% 3.06 1.72 3.91 2.20
REC 6 3.14 2.97 56% 2.97 1.67 4.00 2.25
Kimi ga Nozomu Eien 6 3.30 2.85 56% 2.85 1.60 3.83 2.15
Ai Yori Aoshi ~Enishi~ 6 3.14 2.82 56% 2.82 1.59 3.71 2.09
Full Metal Panic! The Second Raid 5 4.00 4.00 39% 4.00 1.56 5.29 2.07
Lamune 6 3.00 2.68 56% 2.68 1.51 3.37 1.89
BECK 5 3.83 3.65 39% 3.65 1.42 4.57 1.79
Nodame Cantabile 5 3.83 3.65 39% 3.65 1.42 4.57 1.79
Kamichu! 5 3.80 3.60 39% 3.60 1.41 4.40 1.72
Kimi ga Nozomu Eien - Haruka Route 5 3.75 3.53 39% 3.53 1.38 4.18 1.63
Fruits Basket 2nd Season 5 4.00 4.00 39% 3.50 1.37 4.00 1.56
Hanbun no Tsuki ga Noboru Sora 5 4.00 4.00 39% 3.50 1.37 4.86 1.90
Aki-Sora 5 4.00 4.00 39% 3.50 1.37 4.00 1.56
Nana 5 4.00 4.00 39% 3.50 1.37 4.43 1.73
Toradora! 5 3.70 3.47 39% 3.47 1.36 4.67 1.83
Aishiteru Ze Baby 5 3.67 3.43 39% 3.43 1.34 4.31 1.68
Kanon 5 3.70 3.38 39% 3.38 1.32 4.49 1.75
Da Capo Second Season 6 2.75 2.34 56% 2.34 1.31 2.78 1.56
Kanon (2006) 5 3.60 3.36 39% 3.36 1.31 4.11 1.61
Aoi Hana 6 2.80 2.31 56% 2.31 1.30 2.82 1.59
School Days (TV) 6 2.83 2.30 56% 2.30 1.29 2.88 1.62
Binbou Shimai Monogatari 5 3.50 3.25 39% 3.25 1.27 3.43 1.34
Piano 5 3.50 3.25 39% 3.25 1.27 3.43 1.34
Hana-Saku Iroha 5 3.50 3.25 39% 3.25 1.27 3.43 1.34
Ladies versus Butlers! 6 2.50 2.25 56% 2.25 1.27 2.86 1.61
Sasameki Koto 6 2.50 2.25 56% 2.25 1.27 2.86 1.61
Chobits 5 3.56 3.16 39% 3.16 1.24 4.82 1.88
Kareshi Kanojo no Jijoo 5 3.50 3.14 39% 3.14 1.23 4.70 1.83
Amagami SS 6 2.40 2.16 56% 2.16 1.21 2.91 1.64
White Album S2 5 3.25 3.03 39% 3.03 1.18 3.68 1.44
Clannad (TV) 5 3.38 3.03 39% 3.03 1.18 3.97 1.55
sola 5 3.40 3.00 39% 3.00 1.17 3.60 1.41
ef - a tale of memories 5 3.00 3.00 39% 3.00 1.17 4.00 1.56
Midori no Hibi 5 3.40 3.00 39% 3.00 1.17 4.03 1.57
Myself; Yourself 6 2.38 2.03 56% 2.03 1.14 2.97 1.67
Maison Ikkoku 5 3.22 2.91 39% 2.91 1.14 3.96 1.55
Onegai Teacher 5 3.27 2.88 39% 2.88 1.13 4.18 1.63
To Heart 5 3.12 2.60 39% 2.60 1.01 3.36 1.31
True Tears 5 3.00 2.59 39% 2.59 1.01 3.30 1.29
Mizuiro Jidai 5 3.00 2.59 39% 2.59 1.01 2.87 1.12
Aa! Megami-sama - Sorezore no Tsubasa 5 3.00 2.59 39% 2.59 1.01 2.87 1.12
ef - a tale of melodies 5 3.00 2.59 39% 2.59 1.01 2.87 1.12
Mimi wo Sumaseba 4 4.00 4.00 25% 4.00 1.00 5.00 1.25
Kimagure Orange Road: Ano hi ni Kaeritai 4 4.00 4.00 25% 4.00 1.00 5.00 1.25
Canvas 2 ~Niji Iro no Sketch~ 5 3.00 2.55 39% 2.55 1.00 3.11 1.21
Kimikiss Pure Rouge 5 2.75 2.53 39% 2.53 0.99 3.18 1.24

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