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Tag Archives: data science
Best Pattern Recognition and Machine Learning Book (Bishop)
Pattern Recognition and Machine Learning (Information Science and Statistics) The above book by Christopher M. Bishop is widely regarded as one of the most comprehensive books on Machine Learning. At over 700 pages, it has coverage of most machine learning … Continue reading
2 types of chisquared test
Most people have heard of chisquared test, but not many know that there are (at least) two types of chisquared tests. The two most common chisquared tests are: 1way classification: Goodnessoffit test 2way classification: Contingency test The goodnessoffit chisquared test … Continue reading
Popular packages in R and Python for Data Science
Most of the time, users of R and Python will rely on packages and libraries as far as possible, in order to avoid “reinventing the wheel”. Packages that are established are also often superior and preferred, due to lower chance … Continue reading
pip install keeps installing old/outdated packages
This article is suitable for solving the following few problems: module ‘sklearn.tree’ has no attribute ‘plot_tree’ pip install (on Spyder, Anaconda Prompt, etc.) does not install the latest package. The leading reason for “module ‘sklearn.tree’ has no attribute ‘plot_tree” is … Continue reading
How to save sklearn tree plot as file (Vector Graphics)
The ScikitLearn (sklearn) Python package has a nice function sklearn.tree.plot_tree to plot (decision) trees. The documentation is found here. However, the default plot just by using the command tree.plot_tree(clf) could be low resolution if you try to save it from a … Continue reading
Making big data a little smaller
While this result is nice, it also seems to mean that theoretically, we have already reached the limit in dimensional reduction for data compression. Source: Science Daily Harvard computer scientist demonstrates 30yearold theorem still best to reduce data and speed … Continue reading