Raul Garreta, Guillermo Moncecchi
The book adopts a tutorial-based approach to introduce the user to Scikit-learn.If you are a programmer who wants to explore machine learning and data-based methods to build intelligent applications and enhance your programming skills, this the book for you. No previous experience with machine-learning algorithms is required.
Does anybody know an open-source\free library that does term clustering?
Python Scikit learn has some dedicated packages for text analysis. Besides they have a complete suite of Clustering Algorithms that includes K-means, AP, Mean shift, Spectral Clustering, Hierarchical Clustering and DBSCAN algorithms (with appropriate evaluation metrics). This may be helpful your term clustering task.
Link to Scikit Learn Book