Best bets for:

Hoshiai no Sora

Rating Average: 3.0000
Rating Stddev: 0
Review Count: 2
Existing Best Bet #: 3.43067655807339
( $rating_average - $rating_stddev ) + ( log($reviews) / log(5) )
( 3.0000 - 0 ) + ( 0.693147180559945 / 1.6094379124341 )
( 3 ) - 0.430676558073393
Proposed Best Bet #:
( ( $rating_average - ( $rating_stddev / 2) ) - ( ( $stddev==0 and $reviews<5)? .5: 0 ) * $similarity
( ( 3.0000 - 0 ) - 0.5 ) * $similarity
( 3 - 0.5 ) * $similarity
2.5 * $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 - 2019, Drama, TV, Modern, Shounen, High School, Sports

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
Suzuka 6 3.80 3.60 73% 3.60 2.64 4.40 3.23
Haikyu!! To The Top 6 3.00 3.00 73% 2.50 1.84 3.00 2.20
Haikyu!! Second Season 6 3.00 3.00 73% 2.50 1.84 3.00 2.20
Haikyu!! Karasuno Kōkō VS Shiratorizawa Gakuen Kōkō 6 3.00 3.00 73% 2.50 1.84 3.00 2.20
Haikyuu!!: To The Top Season 2 6 3.00 3.00 73% 2.50 1.84 3.00 2.20
H2 5 4.00 4.00 51% 3.50 1.79 4.00 2.04
Ao no Orchestra 5 4.00 4.00 51% 3.50 1.79 4.00 2.04
Kaze ga Tsuyoku Fuiteiru 5 4.00 4.00 51% 3.50 1.79 4.00 2.04
Tsurune: Kazemai Kōkō Kyūdō-bu 5 4.00 4.00 51% 3.50 1.79 4.00 2.04
Toradora! 5 3.70 3.47 51% 3.47 1.77 4.67 2.38
Kono Oto Tomare! S2 5 3.50 3.25 51% 3.25 1.66 3.43 1.75
Beastars 5 3.50 3.25 51% 3.25 1.66 3.43 1.75
Midori no Hibi 5 3.40 3.00 51% 3.00 1.53 4.03 2.06
Ichigo 100% TV 5 2.75 2.53 51% 2.53 1.29 3.18 1.62
Haikyu!! 5 3.00 3.00 51% 2.50 1.28 3.00 1.53
Mou Ippon! 5 3.00 3.00 51% 2.50 1.28 3.00 1.53
Princess Nine 5 3.00 3.00 51% 2.50 1.28 3.68 1.88
Baby Steps 5 3.00 3.00 51% 2.50 1.28 3.00 1.53
Isshuukan Friends 5 3.00 2.50 51% 2.50 1.28 2.43 1.24
Kono Oto Tomare! (S1) 5 3.00 3.00 51% 2.50 1.28 3.43 1.75
Boukyaku Battery 5 3.00 3.00 51% 2.50 1.28 3.00 1.53
School Rumble 4 3.89 3.73 32% 3.73 1.22 4.94 1.61
Mai-HiME 4 3.88 3.71 32% 3.71 1.21 4.84 1.58
Great Teacher Onizuka 4 3.83 3.65 32% 3.65 1.19 5.00 1.63
BECK 4 3.83 3.65 32% 3.65 1.19 4.57 1.49
Fruits Basket 4 3.85 3.61 32% 3.61 1.18 5.23 1.71
Cross Game 4 3.80 3.60 32% 3.60 1.18 4.40 1.44
Suzumiya Haruhi no Yuutsu 4 3.80 3.60 32% 3.60 1.18 4.83 1.58
Rozen Maiden 4 3.75 3.53 32% 3.53 1.15 4.61 1.50
Paradise Kiss 4 3.75 3.53 32% 3.53 1.15 4.18 1.36
Asu no Yoichi! 5 2.50 2.25 51% 2.25 1.15 3.11 1.59
Tamayomi 5 2.50 2.25 51% 2.25 1.15 2.43 1.24
Gin no Saji Dai-2-ki 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Maria-sama ga Miteru 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Natsume Yuujinchou Shi 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Yakusoku no Neverland 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Iroduku Sekai no Ashita kara 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Hibike! Euphonium: Chikai no Finale 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Aku no Hana 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Sangatsu no Lion 2 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Jigoku Shoujo Futakomori 4 4.00 4.00 32% 3.50 1.14 4.68 1.53
Hajime no Ippo 4 4.00 4.00 32% 3.50 1.14 4.43 1.45
Fruits Basket 2nd Season 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Happy Sugar Life 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Maria-sama ga Miteru ~Haru~ 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Fruits Basket (2019) 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Fruits Basket: The Final 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Sonny Boy 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
Gin no Saji 4 4.00 4.00 32% 3.50 1.14 4.00 1.31
X (TV) 4 3.75 3.47 32% 3.47 1.13 4.91 1.60

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