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AUC (Area Under the Curve) – The Performance-Based Model Selector for Pega Binary Prediction Models

The metrics for binary models is AUC, F-score for categorical models and RMSE for continuous models. The higher the AUC, the better a model is at predicting the outcome. ADMRead More

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Pega Certified Exam for Decisioning Consultant & Data Scientist (PCDC, PCDS)

Within two-month study (Oct and Nov, 2022), I passed the PCDC exam and the PCDS exam via self-learning from the official Pega Academy website. I got high scores (91 andRead More

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Tax Incidence formulas in the view of producer and consumer

My daughter attends her first college class, Micro economy, at the summer of her junior year. So, it is time to go over some economy concepts that I learnt beforeRead More

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A note on BNF Parser to verify valid number: a problem from leetcode

BNF Parser is one of the step in the compiler theory to analyze the syntax validity of number, program sentence, variable, etc. It is also a perfect recursive algorithm sampleRead More

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The unit test mock and related terms (Test Double): a note and examples to martin old article

Ref: https://www.martinfowler.com/articles/mocksArentStubs.html http://xunitpatterns.com/Test%20Double.html https://github.com/kensipe/spock-mocks-nfjs http://nilhcem.com/FakeSMTP/. It is hard to not write unit test for your programmer job. Of course, you can quit if you do not like to write andRead More

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Docker Container deployment with multi layers

That is a SJSU lecture course project. You need to deploy a list of service via Docker approach. That is not difficult if just one or two. However, if itRead More

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Text Sentiment Analysis Project with LSTM, CNN

This is a supervised learning project. The Text Sentiment Analysis is combined with three parts, the text data preprocess, the text data representation, three models (CNN, KNN,LSTM). This is anRead More

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Association Rule Analysis for Criminal data

This is a SJSU course project.  We need to generate rule from Criminal data to see any criminal activity cause issue. The data It is got from the official websiteRead More

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VS 2017 C Sharp and PDF Generator

 VS 2017 C# with PDF generator In a real application system, most of time, you have to generate pdf for your users. For example, in the ERP, you may createRead More

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Sentence cluster with Kmeans algorithm

  This is unsupervised learning project in the SJSU data mining course. Students need to classify the sentences (already numerized by the SJSU course Prof) into clusters using Kmeans algorithm.Read More

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