Pricy.ro Behind the SceneVlad Balan, Sorin Oboroceanuwww.pricy.ro

Iași, 10th of March 2012

Product AlternativesProcesor Intel® CoreTM i7 990X, 3.46GHz, Socket 1366, Box

vs.Procesor Intel Core I7 Extreme 990x 3.46GHz 6.4GT/S, 12MB, S1366, box Overclocking Enabled

Pearson’s Similarity score

Collaborative filtering algorithmAudiobook - Intrebarile Sunt De Fapt Raspunsuri - Allan Pease

Intrebarile sunt, de fapt, raspunsuri (2 CD) (Audiobook)

Tokenize each product name => tagsCreate a matrix

Audiobook

Intrebarile

Sunt De Fapt Raspunsuri

Allan Pease 2 CD

X 1 1 1 1 1 1 1 1 0 0

Y 1 1 1 1 1 1 0 0 1 1

X = Audiobook - Intrebarile Sunt De Fapt Raspunsuri - Allan PeaseY = Intrebarile sunt, de fapt, raspunsuri (2 CD) (Audiobook)

Collaborative filtering algorithm

Calculate Pearson’s Similarity score between all products (score is in range [-1,…, 1]

For a certain product, get all products that have the best score (>0.7)

Product Alternatives

Product Alternatives

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Thank you very much!Vlad Balan, Sorin Oboroceanuwww.pricy.ro

Iași, 10th of March 2012