Latent Semantic Analysis

2014.01.31   5:31PM   machine learning, numerical analysis, programming

Latent Semantic Analysis (LSA) is a document analysis technique that's based on a bag-of-words assumption. What does that mean? LSA is a way to take a set of written documents, and find...

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LU Decomposition

2013.09.12   10:13AM   numerical analysis, programming

What is LU Decomposition? LU Decomposition is simply the process of factoring a matrix A into an upper triangular matrix U, and a lower triangular matrix L so that L×U = A. Ok, well, why should I care? Many engineering applications...

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Quick and Easy Numerical Differentiation

2013.09.07   2:21PM   numerical analysis

Numerical differentation has a cornucopia of uses in engineering. However, when you're first learning it may appear daunting - especially the form of the equations. For instance, these...

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Cluster? I 'ardly know 'er!

2013.08.15   3:54PM   machine learning, numerical analysis

Cluster analysis is some powerful voodoo, and has been applied to a ton of different areas. Market analysis? Cluster it...

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