為了記錄在競(jìng)賽中入門深度學(xué)習(xí)的過程，我開了一個(gè)新系列【從傳統(tǒng)方法到深度學(xué)習(xí)】。
1. 問題
Kaggle競(jìng)賽Bag of Words Meets Bags of Popcorn是電影評(píng)論（review）的情感分析，可以視作為短文本的二分類問題（正向、負(fù)向）。標(biāo)注數(shù)據(jù)集長(zhǎng)這樣：
id sentiment review"2381_9" 1 "\"The Classic War of the Worlds\" by Timothy Hines is a very entertaining film that obviously goes to great effort and lengths to faithfully recreate H. G. Wells' classic book. Mr. Hines succeeds in doing so. ...""2486_3" 0 "What happens when an army of wetbacks, towelheads, and Godless Eastern European commies gather their forces south of the border? Gary Busey kicks their butts, of course. Another laughable example of Reagan-era cultural fallout, Bulletproof wastes a decent supporting cast headed by L Q Jones and Thalmus Rasulala."
評(píng)價(jià)指標(biāo)是AUC。因此，在測(cè)試數(shù)據(jù)集上應(yīng)該給出概率而不是類別；即為
延伸閱讀
學(xué)習(xí)是年輕人改變自己的最好方式