word2vec源文件

Tools for computing distributed representtion of words ------------------------------------------------------ We provide an implementation of the Continuous Bag-of-Words (CBOW) and the Skip-gram model (SG), as well as several demo scripts. Given a text corpus, the word2vec tool learns a vector for every word in the vocabulary using the Continuous Bag-of-Words or the Skip-Gram neural network architectures. The user should to specify the following: - desired vector dimensionality - the size of the context window for either the Skip-Gram or the Continuous Bag-of-Words model - training algorithm: hierarchical softmax and / or negative sampling - threshold for downsampling the frequent words - number of threads to use - the format of the output word vector file (text or binary) Usually, the other hyper-parameters such as the learning rate do not need to be tuned for different training sets. The script demo-word.sh downloads a small (100MB) text corpus from the web, and trains a small word vector model. After the training is finished, the user can interactively explore the similarity of the words. More information about the scripts is provided at https://code.google.com/p/word2vec/