02393nam a2200337Ia 4500 20260803094148.0 251212s2013 xx 000 0 und d Web corpus construction / Roland Schèafer and Felix Bildhauer. Schèafer, Roland 1974- Bildhauer, Felix. [San Rafael, Calif.] : Morgan & Claypool, c2013. xv, 129 p. : ill.: 24 cm. Synthesis lectures on human language technologies,|x1947-4059 ; #22. Includes bibliographical references (p. 111-128) 978-1-60845-983-4 pbk. Corpora (Linguistics) Data processing. Computational linguistics. Web search engines. 410.188 Sch14 c2013 0 0 0 1 0 0 0 0 0 1 1 0 HED5421 in English CollLib The World Wide Web constitutes the largest existing source of texts written in a great variety of languages. A feasible and sound way of exploiting this data for linguistic research is to compile a static corpus for a given language. There are several advantages of this approach: (i) Working with such corpora obviates the problems encountered when using Internet search engines in quantitative linguistic research (such as non-transparent ranking algorithms). (ii) Creating a corpus from web data is virtually free. (iii) The size of corpora compiled from the WWW may exceed by several orders of magnitudes the size of language resources offered elsewhere. (iv) The data is locally available to the user, and it can be linguistically post-processed and queried with the tools preferred by her/him. This book addresses the main practical tasks in the creation of web corpora up to giga-token size. Among these tasks are the sampling process (i. e., web crawling) and the usual cleanups including boilerplate removal and removal of duplicated content. Linguistic processing and problems with linguistic processing coming from the different kinds of noise in web corpora are also covered. Finally, the authors show how web corpora can be evaluated and compared to other corpora (such as traditionally compiled corpora) 0 lcc BK hpayson 2015-05-22 09:28:38 hpayson 2015-05-22 09:30:13 8283 8257 8257 0 0 ddc 0 0 HED HED HED 2025-12-21 410.188 Sch14 c2013 HED5421 2026-06-02 00:00:00 2025-12-21 BK