Referring expression(参照表現)など
●referring expression(参照表現)とは何か?
A Joint Speaker-Listener-Reinforcer Model for Referring Expressionsより Referring expressions are natural language constructions used to identify particular objects within a scene.(あるシーン中の物体を特定するために用いられる,自然言語構造のことである)
referring expressionは文脈を含むためword embeddingだけで実現することは難しいと考えられる
●Word embeddingとは何か?
Wikipediaより Word embedding is the collective name for a set of language modeling and feature learning techniques in natural language processing (NLP) where words or phrases from the vocabulary are mapped to vectors of real numbers. (単語やフレーズを数値として写像する自然言語処理(NLP)の名称である)
... There are many branches and many research groups working on word embeddings. In 2013, a team at Google led by Tomas Mikolov created word2vec, a word embedding toolkit which can train vector space models faster than the previous approaches. Most new word embedding techniques rely on a neural network architecture instead of more traditional n-gram models and unsupervised learning.(近年ではword2vecなどがあり,従来的なn-gramモデルや教師なし学習が置きかわりつつある)