Weiss, Sholom M. / Damerau, Fred et al. Text Mining - Predictive Methods for Analyzing Unstructured Information. Springer New York, 2010.

eng

Sholom M. Weiss / Fred Damerau / Tong Zhang / Nitin Indurkhya

Text Mining

Predictive Methods for Analyzing Unstructured Information

Springer New York
2010

Taschenbuch
252 Seiten
ISBN 9781441929969

Data mining is a mature technology. The prediction problem, looking for predictive patterns in data, has been widely studied. Strong me- ods are available to the practitioner. These methods process structured numerical information, where uniform measurements are taken over a sample of data. Text is often described as unstructured information. So, it would seem, text and numerical data are different, requiring different methods. Or are they? In our view, a prediction problem can be solved by the same methods, whether the data are structured - merical measurements or unstructured text. Text and documents can be transformed into measured values, such as the presence or absence of

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words, and the same methods that have proven successful for pred- tive data mining can be applied to text. Yet, there are key differences. Evaluation techniques must be adapted to the chronological order of publication and to alternative measures of error. Because the data are documents, more specialized analytical methods may be preferred for text. Moreover, the methods must be modi?ed to accommodate very high dimensions: tens of thousands of words and documents. Still, the central themes are similar.

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