RTextTools: a machine learning library for text classification
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Classifying Breast Cancer as Benign or Malignant Using RTextTools

2/11/2012

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RTextTools has largely been used for topic classification in the social sciences. However, recent discussions with researchers at various universities have demonstrated that the package can be applied to a host of problems in the natural sciences as well.

One such application is using text classification to identify breast cancer masses as benign or malignant. Using the Wisconsin Diagnostic Breast Cancer Dataset from UC Irvine, we wrote a script that trains eight classifiers on characteristics such as clump thickness, uniformity of cell size, uniformity of cell shape, marginal adhesion, single epithelial cell size, bare nuclei, bland chromatin, normal nucleoli, and mitoses. When run on the data, the classifiers were able to achieve up to 96% recall accuracy on a randomly sampled training set of 200 patients and test set of 400 patients.

The source code is available below, and the dataset is automatically downloaded from UC Irvine's servers. If you've found RTextTools useful in your research, we'd love to hear about it!

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RTextTools Short Course Materials

2/10/2012

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Attached are some of the materials from the recent short course at UNC. For confidential reasons, we are unable to present all of the materials, but this is enough to get someone started. 1. Lecture; 2. Intro to R; 3. NY Times; 4. Congressional Bills. Hope this proves helpful.
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Successful Two Day Workshop at UNC-Chapel Hill

2/8/2012

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This week the Odum Institute at UNC held a two day short course on text classification with RTextTools. The workshop, led by Loren Collingwood, covered the basics of content analysis, supervised learning and text classification, introduction to R, and how to use RTextTools. Participants brought in their own data on the second day, which the instructor helped them classify. Based on feedback, the course was a success. Do not hesitate to contact us if your university, department, or company is interested in such a course.
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    Developer Blog

    Updates on RTextTools progress, tips, and examples.

    ​Note: RTextTools is no longer actively maintained -- the software may contain bugs that will not be fixed with newer versions of R.

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