p.text-big spaCy helps you write programs that do clever things with text. You give it a string of characters, it gives you an object that provides multiple useful views of its meaning and linguistic structure. Specifically, spaCy features a high performance tokenizer, part-of-speech tagger, named entity recognizer and syntactic dependency parser, with built-in support for word vectors. All of the functionality is united behind a clean high-level Python API, that makes it easy to use the different annotations together.
p.text-big To make spaCy as fast and easy to install as we could, we built it #[strong from the ground up] from custom components, with #[strong custom implementations], and sometimes #[strong custom algorithms]. It's written in clean but efficient Cython code, which allows us to manage both low level details and the high-level Python API in a single codebase.
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+label('strong') What our users say...
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<blockquote class="twitter-tweet" data-cards="hidden" data-lang="en"><p lang="en" dir="ltr">"Dead Code Should be Buried" <a href="http://t.co/AxfZRRz8nB">http://t.co/AxfZRRz8nB</a> by <a href="https://twitter.com/honnibal">@honnibal</a> on NLP tools & new Python library spaCy <a href="http://t.co/C9f798R3aO">http://t.co/C9f798R3aO</a> looks nice!</p>— Andrej Karpathy (@karpathy) <a href="https://twitter.com/karpathy/status/640098689894232064">September 5, 2015</a></blockquote>
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<blockquote class="twitter-tweet" data-cards="hidden" data-lang="en"><p lang="en" dir="ltr">spaCy seems pretty exciting to me - and it is clear that NLTK has not kept up with <a href="https://twitter.com/hashtag/NLP?src=hash">#NLP</a>. <a href="http://t.co/mUPFUMLrbo">http://t.co/mUPFUMLrbo</a> <a href="https://twitter.com/hashtag/python?src=hash">#python</a> <a href="https://twitter.com/hashtag/datascience?src=hash">#datascience</a></p>— Alex Engler (@AlexCEngler) <a href="https://twitter.com/AlexCEngler/status/648537133544833025">September 28, 2015</a></blockquote>
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<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Explore what NLP can do these days with Sense2vec and Spacy <a href="https://t.co/MHZEP2yLo4">https://t.co/MHZEP2yLo4</a></p>— Chattermill.io (@chatter_mill) <a href="https://twitter.com/chatter_mill/status/699660272907059200">February 16, 2016</a></blockquote>
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.label-strong Benchmarks
.h2 State-of-the-art speed and accuracy
p.text-big spaCy is committed to rigorous evaluation under standard methodology. Two peer-reviewed papers in 2015 confirm that it offers the #[strong fastest syntactic parser in the world] and that #[strong its accuracy is within 1% of the best] available. The few systems that are more accurate are 20× slower or more.
p.text-big The first of the evaluations was published by #[strong Yahoo! Labs] and #[strong Emory University], as part of a survey of current parsing technologies #[a(href="http://aclweb.org/anthology/P/P15/P15-1038.pdf" target="_blank") (Choi et al., 2015)]. Their results and subsequent discussions helped us develop a novel psychologically-motivated technique to improve spaCy's accuracy, which we published in joint work with Macquarie University #[a(href="https://aclweb.org/anthology/D/D15/D15-1162.pdf" target="_blank") (Honnibal and Johnson, 2015)].