The Corpus of Contemporary American English (COCA) is the largest freely-available corpus of English, and the only large and balanced corpus of American English. It was created by Mark Davies of Brigham Young University in 2008, and it is now used by tens of thousands of users every month (linguists, teachers, translators, and other researchers). COCA is also related to other large corpora that we have created or modified, including the British National Corpus (our architecture and interface), the 100 million word TIME Corpus (1920s-2000s), and the new 400 million word Corpus of Historical American English (COHA; 1810-2009).
The corpus contains more than 410 million words of text and is equally divided among spoken, fiction, popular magazines, newspapers, and academic texts. It includes 20 million words each year from 1990-2010 and the corpus is also updated once or twice a year (the most recent texts are from Summer 2010). Because of its design, it is perhaps the only corpus of English that is suitable for looking at current, ongoing changes in the language (see the 2010 article in Literary and Linguistic Computing).
The interface allows you to search for exact words or phrases, wildcards, lemmas, part of speech, or any combinations of these. You can search for surrounding words (collocates) within a ten-word window (e.g. all nouns somewhere near faint, all adjectives near woman, or all verbs near feelings), which often gives you good insight into the meaning and use of a word.
The corpus also allows you to easily limit searches by frequency and compare the frequency of words, phrases, and grammatical constructions, in at least two main ways:
该语料库地址为http://www.americancorpus.org，或美国英语词频http://www.wordfrequency.info
觉得好帮忙顶一下。
Compare the Corpus of Contemporary American English to the American National Corpus time corpus american english wordlists word lists frequency BYU Mark Davies
The corpus contains more than 410 million words of text and is equally divided among spoken, fiction, popular magazines, newspapers, and academic texts. It includes 20 million words each year from 1990-2010 and the corpus is also updated once or twice a year (the most recent texts are from Summer 2010). Because of its design, it is perhaps the only corpus of English that is suitable for looking at current, ongoing changes in the language (see the 2010 article in Literary and Linguistic Computing).
The interface allows you to search for exact words or phrases, wildcards, lemmas, part of speech, or any combinations of these. You can search for surrounding words (collocates) within a ten-word window (e.g. all nouns somewhere near faint, all adjectives near woman, or all verbs near feelings), which often gives you good insight into the meaning and use of a word.
The corpus also allows you to easily limit searches by frequency and compare the frequency of words, phrases, and grammatical constructions, in at least two main ways:
- By genre: comparisons between spoken, fiction, popular magazines, newspapers, and academic, or even between sub-genres (or domains), such as movie scripts, sports magazines, newspaper editorial, or scientific journals
- Over time: compare different years from 1990 to the present time
该语料库地址为http://www.americancorpus.org，或美国英语词频http://www.wordfrequency.info
觉得好帮忙顶一下。
Compare the Corpus of Contemporary American English to the American National Corpus time corpus american english wordlists word lists frequency BYU Mark Davies
