Tài liệu Báo cáo khoa học: "Learning Word Vectors for Sentiment Analysis" ppt

... content effects. For exam- ple, the sentiment enriched vectors for ghastly are truly semantic alternatives to that word, whereas the vectors without sentiment also contain some content words that tend ... learn word vectors capturing semantic term–documentin- formation as well as rich sentiment content. The proposed model can leverage both con- tinuous and multi-dimensional...

Ngày tải lên: 20/02/2014, 04:20

... frequent words F to generalize words to word classes”. We define a word class as either a word itself or its part of speech. Given a sentence s = w 1 , w 2 , . . . , w |s| , where w i is the i-th word ... repre- sentation for elearning environments. In Proc. of Applications for Romanian. Proceedings of RANLP workshop, pages 19–25. Wenbin Jiang, Haitao Mi, and Qun Liu. 2008. Word l...

Ngày tải lên: 20/02/2014, 04:20

... matrix for English words was constructed using English version of Xinhua News (Jan. 1998-Dec. 1999). The win- dow size for counting second order co-occurrence was 50 words. 3.2 Evaluation method for ... that we do not use position of local word and part of speech informa- tion, which may deteriorate the performance when local context(≤ 5 words) is used. For “line”, the reason might...

Ngày tải lên: 20/02/2014, 16:20

... describing the word pair currently consid- ered; getAction determines the appropriate action for the pair; assignParent assigns a parent for the child word based on the action; and deleteWord deletes ... based on the action; and deleteWord deletes the child word in T at the focus once the action is taken. Let t represents for a word token For sentence T = {t 1 , t 2 , . . . ,...

Ngày tải lên: 20/02/2014, 12:20

... recognize words beyond their vocab- ulary, many of which are information rich terms, like named entities or foreign words. Hybrid word/ sub -word systems solve this problem by adding sub -word units ... coherence. Hybrid word/ sub -word recognizers can produce a sequence of sub -word units in place of OOV words. Ideally, the recognizer outputs a complete word for in-vocabulary (IV)...

Ngày tải lên: 20/02/2014, 04:20

... aspects of translation quality. For example, while BLEU (Papineni et al., 2002) focuses on word- based n-gram precision, METEOR (Lavie and Agarwal, 2007) allows for stem/synonym matching and incorporates ... M K (h)]. For exam- ple, suppose K = 2, M 1 (h) computes the BLEU score, and M 2 (h) gives the METEOR score of h. Figure 1 illustrates the set of vectors {M (h)} in a 10-best lis...

Ngày tải lên: 19/02/2014, 19:20

... that for each verb, it has an accurate distribution over that inventory. We therefore compare the lexicons based on their per- formance on a task that a good SCF lexicon should be useful for: ... surface frames to the underlying predicate-argument structure. In- formation about verb subcategorization is useful for tasks like information extraction (Cohen and Hunter, 2006; Rupp et al., 20...

Ngày tải lên: 19/02/2014, 19:20

... context and one represen- tation per word. This is problematic because words are often polysemous and global con- text can also provide useful information for learning word meanings. We present a new neural ... represent word mean- ings with vectors that capture semantic and syntac- tic information of words. These representations can be used to induce similarity measures by computing...

Ngày tải lên: 19/02/2014, 19:20

... method for mining translations of web queries from anchor texts. Cheng, et al (2004) propose a similar method for translating unknown queries with web corpora for cross-language information ... (2000) describe cross-language information access to multilingual collections on the Internet. Recently, researchers have begun to exploit mixed code webpages for word and phrase tra...

Ngày tải lên: 19/02/2014, 19:20

... observed words. Therefore, missing words can be used to prune the hypotheses that are also highly related to the missing words. Consider the hypotheses of latent vectors in ta- ble 1 for bank#n#1. ... be not related to missing words (P ·,i · Q ·,j should be close to 0 for missing words X ij = 0). Also weight w m for missing words is very small to make sure latent vectors such as v 3...

Ngày tải lên: 19/02/2014, 19:20