Will I Like This Book? Predictor
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I was wondering how the predictor on LibraryThing works. How exactly does the system calculate if I will like a book or not? For example, I have rated one of the best books I've ever read Till We Have Faces: A Myth Retold as five stars and put it on my favorites shelf but when I clicked "Will I Like This Book?" LibraryThing thinks I probably won't like it (prediction confidence: very high).
So how does the algorithm work? Just curious.
I have wondered the same (1). I have given up
asking the "Will I like" question; the answer has ALWAYS been "No".
I was given an explanation, something to do with the criteria in the way that comparison(s) used by the System are made, which I didnʻt really understand.
Here's the original blog post from when the feature debuted: http://blog.librarything.com/main/2009/01/will-you-like-it/
Thanks for the link (3), norabelle414. I get the idea somewhat better now, not that I agree with it. Especially the phrase about the importance of popularity in the
comparisons. In general, the books that Iʻve listed* are not high in the popularity ratings, so I suppose that would lead toward the negative answers Iʻve been consistently getting.
*The collection is about 90% "Wish List", but does have over 1,000 titles actually owned
No, no, no.
What matters is how popular the books are *among people with libraries similar to yours*, compared to in the population as a whole.
If 50% of all LT members have Harry Potter, but only 5% of your most-similar libraries do, then it will predict that you won't like Harry Potter. Conversely, if only 5% of all LT members have Pride and Prejudice, and 50% of your most-similar libraries do, it will predict that you will like it.
"popularity". . . "No, no. no" (4>5)
I donʻt think my post (4) rates a triple "no", but thanks, lorax, for clarifying what use the system makes of popularity.
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