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Our Tutorials

Singular Value Decomposition Tutorial - a gentle introduction to how Singular Value Decomposition or SVD works using a golf example.

Latent Semantic Analysis Tutorial - an introduction to Latent Semantic Analysis or LSA using an example of investing book titles from Amazon. LSA is also called Latent Semantic Indexing or LSI.

How many SVD dimensions to use? - a method of figuring out how many dimensions to use when using SVD for prediction or noise reduction (upcoming).

Search Engine Marketing and LSI

3DMarketVision - Puffinware LLC is partnering with 3DMarketVision to create an LSI-powered 3D visual tool that analyzes markets and keywords.

Search Engine Marketers and their LSI Myths - goes through some common misconceptions of Latent Semantic Indexing (also known as Latent Semantic Analysis), especially related to search engine marketing.

SVD Resources

Digital Image Restoration - describes the application of SVD to reducing noise or blur in digital images.

Java: SVD Demonstration - an interactive demonstration SVD through manipulation of singular vectors.

Singular Value Decomposition and principal components analysis - a paper describing the application of SVD to gene expression analysis. Also include a brief mention of LSI and visual display of results.

SVD from Wikipedia - the standard explanation of SVD from Wikipedia.

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