17. 分散表現(Distributed Representation)を用いたレコメンダーアルゴリズム
Document : a sequence of words with context.
User : a sequence of item views with user’s intention.
Set of documents
Vectors for words
Vectors for documents
sim{word, word}
sim{doc, word}
sim{doc, doc}
Set of user behaviors
Vectors for items
Vectors for users
sim{item, item}
sim{user, item}
sim{user, user}
自然言語処理分野のアルゴリズム word2vecを
レコメンダーシステムに活用
17