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MATLAB
is used for a range of applications, including video, image and audio signal processing, modeling of data, etc.
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Python (together with NLTK)
is used principally for natural language processing and subsequent information retrieval/ data mining.
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R is used for statistical analysis of data (or generating synthetic data).
R is used for statistical analysis of data (or generating synthetic data).
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Free and open source toolboxes for classifiers
Free and open source toolboxes for classifiers such as support vector machines, artificial neural networks, etc. are used on a need-based basis.
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User interface design using various web technologies
are used for projects that require significant user-interaction or an elaborate user interface.
