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Theory


Topic Replies Activity
What is a matrix «decomposition» («factorization»)? 1 May 27, 2019
What is the «Cholesky decomposition»? 1 May 26, 2019
What is the «standard normal approximation»? 1 May 27, 2019
What is a «normal approximation»? 1 May 27, 2019
What is the «standard normal distribution»? 1 May 27, 2019
Yitong Ren - «The significance and applications of covariance matrix» (2019-05-01) 1 May 26, 2019
Simple machine learning algorithms 1 May 24, 2019
What is «feature selection»? 1 May 26, 2019
What is an «upper triangular» matrix? 2 May 27, 2019
What is a «lower triangular» matrix? 2 May 27, 2019
What is a Hermitian ( «self-adjoint») matrix? 1 May 27, 2019
What is the «conjugate transpose» («Hermitian transpose») of a matrix? 1 May 27, 2019
What is the «complex conjugate»? 1 May 27, 2019
What is an «indefinite» matrix? 2 May 27, 2019
What is a «negative semi-definite» matrix? 2 May 27, 2019
What is a «positive semi-definite» matrix? 2 May 27, 2019
What is a «negative definite» matrix? 2 May 27, 2019
What is a «positive definite» matrix? 2 May 27, 2019
What is the «transpose» of a matrix? 1 May 26, 2019
What is «stochastic modeling»? 1 May 26, 2019
What is «covariance»? 1 May 26, 2019
What is «covariance matrix» («dispersion matrix»)? 2 May 26, 2019
Rohan Kotwani - «Interesting properties and use cases of the covariance matrix» (2019-05-12) 1 May 26, 2019
Srishti Saha - «Let us understand the correlation matrix and covariance matrix» (2018-10-05) 1 May 26, 2019
Zakaria Jaadi - «A step by step explanation of Principal Component Analysis» (2019-02-28) 1 May 26, 2019
What is «standard deviation»? 1 May 26, 2019
What is «squared deviation from the mean» («SDM»)? 1 May 26, 2019
What is the «expected value» («expectation») in probability theory? 1 May 26, 2019
What is «deviation» in statistics? 1 May 26, 2019
What is «mean deviation from the mean»? 1 May 26, 2019