data science Archives - Petamind https://petaminds.com/tag/data-science/ A.I, Data and Software Engineering Mon, 21 Feb 2022 20:37:56 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://petaminds.com/wp-content/uploads/2019/09/ic_launcher.png data science Archives - Petamind https://petaminds.com/tag/data-science/ 32 32 WHAT IS P-VALUE? https://petaminds.com/what-is-p-value/ https://petaminds.com/what-is-p-value/#respond Sat, 30 Jan 2021 00:43:00 +0000 https://petaminds.com/?p=2901 In statistics, the p-value is the probability of obtaining results at least as extreme as the observed results of a statistical hypothesis test, assuming that the null hypothesis is correct. The p-value is used as an alternative to rejection points of significance at which the null hypothesis would be rejected. A smaller p-value means that there is stronger […]

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]]> https://petaminds.com/what-is-p-value/feed/ 0 Feature Engineering FundamentalS https://petaminds.com/feature-engineering-fundamentals/ https://petaminds.com/feature-engineering-fundamentals/#respond Tue, 22 Sep 2020 11:20:23 +0000 https://petaminds.com/?p=2714 The features you use influence more than everything else the result. No algorithm alone, to my knowledge, can supplement the information gain given by correct feature engineering. — Luca Massaron What is a feature and why we need engineering of it? Basically, all machine learning algorithms use some input data to create outputs. This input data […]

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]]> https://petaminds.com/feature-engineering-fundamentals/feed/ 0 Convolutional Neural Network with CIFAR and Tensorflow (example) https://petaminds.com/convolutional-neural-network-with-cifar-and-tensorflow-example/ https://petaminds.com/convolutional-neural-network-with-cifar-and-tensorflow-example/#respond Sat, 21 Sep 2019 00:53:10 +0000 http://petaminds.com/?p=613 In this article, we assume that you already understand the basic concepts of a convolutional neural network (CNN), e.g. one-hot coding, convolution, pooling, fully-connected layer, activation functions. If you are totally new to these terms, please find and read our other articles. The problem We will use Tensorflow to build a model for classification of […]

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]]> https://petaminds.com/convolutional-neural-network-with-cifar-and-tensorflow-example/feed/ 0 Bias vs Variance Quick note https://petaminds.com/bias-vs-variance-quick-note/ https://petaminds.com/bias-vs-variance-quick-note/#comments Mon, 28 May 2018 15:55:04 +0000 http://petaminds.com/?p=524 A proper understanding of bias and variance concepts would help us not only to build accurate models but also to avoid the mistake of over-fitting and under-fitting.

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