Top "Data-analysis" questions

What does selecting the largest eigenvalues and eigenvectors in the covariance matrix mean in data analysis?

Suppose there is a matrix B, where its size is a 500*1000 double(Here, 500 represents the number of observations and 1000 represents …

matlab machine-learning pca data-analysis

How do I lag columns in MySQL?

Consider the following table: SELECT id, value FROM table ORDER BY id ASC; +-----+---------+ | id | value | +-----+---------+ | 12 | 158 | | 15 | 346 | | 27 | 334 | | 84 | 378 | | 85 | 546 | +-----+…

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When should I use C++ instead of SQL?

I am a C++ programmer who occasionally uses MySQL to work with databases, but my SQL knowledge is rather limited. …

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How to filter a CSV file without Pandas? (Best Substitute for Pandas in Pythonista)

I am trying to do some data analysis on Pythonista 3 (iOS app for python), however because of the C libraries …

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Determine if a set of data is from a linear or logarithmic function?

I have a set of data points and am curious if the data represents a linear function or a logarithmic …

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What's the best approach to recognize patterns in data, and what's the best way to learn more on the topic?

A developer I am working with is developing a program that analyzes images of pavement to find cracks in the …

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