🌐 Mailman 3 December 2018 - scikit-learn - python.org

Is there regression algo with 3-d input?
by lampahome Dec. 7, 2018

Dec. 7, 2018

I want to regress time series prediction per week, so the unit of train data X is the day ex: Mon, Tue, Wed...etc. Ex: train data X is like below X: [ [1,2,3,4,3,2,1] ,[2,2,3,4,3,2,2] ] Each data of each row is about the day of one week. So each row has 7 data. Now if I have another feature W in each day like weather, or traffic or else. I thought expand the X to 3d is reasonable because the W should be contained in each day in X. So what I thought X is: [ [ [1, W-Mon], [2, W-Tue] , [3, W-Wed] , [4, W-Thu] , [3, W-Fri] , [2, W-Sat] , [1, W-Sun] ] , [ [2, W-Mon], [2, W-Tue] , [3, W-Wed] , [4, W-Thu] , [3, W-Fri] , [2, W-Sat] , [2, W-Sun] ] ] It become a 3d input and contain every feature of each day. Does scikit have regression algo can accept the 3d input X ? I almost found algo can only accept 2d input X ex: *X* : array-like or sparse matrix, shape = [n_samples, n_features]

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PyCM 1.6 released: New machine learning library for confusion matrix statistical analysis
by Sepand Haghighi Dec. 6, 2018

Dec. 6, 2018

Hi folks Recently we have released new version of PyCM, library for confusion matrix statistical analysis. I thought you might find it interesting. PyCM is a multi-class confusion matrix library written in Python that supports both input data vectors and direct matrix, and a proper tool for post-classification model evaluation that supports most classes and overall statistics parameters. PyCM is the swiss-army knife of confusion matrices, targeted mainly at data scientists that need a broad array of metrics (more than 90) for predictive models and an accurate evaluation of large variety of classifiers. Version 1.6 changelog : - AUC Value Interpretation (AUCI) added - Example-6 added (Unbalanced data) - Anaconda cloud package added - overall_param and class_param arguments added to stat, save_stat and save_html methods - class_param argument added to save_csv method - _ removed from overall statistics names - README modified - Document modified Repository : https://github.com/sepandhaghighi/pycmWebsite : http://pycm.shaghighi.ir/Document : http://pycm.shaghighi.ir/doc/Paper Link : PyCM: Multiclass confusion matrix library in Python Best RegardsSepand Haghighi

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Recurrent questions about speed for TfidfVectorizer
by Matthieu Brucher Dec. 5, 2018

Dec. 5, 2018

Hi all, I've noticed a few questions online (mainly SO) on TfidfVectorizer speed, and I was wondering about the global effort on speeding up sklearn. Is there something I can help on this topic (Cython?), as well as a discussion on this tough subject? Cheers, Matthieu -- Quantitative analyst, Ph.D. Blog: http://blog.audio-tk.com/ LinkedIn: http://www.linkedin.com/in/matthieubrucher

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