# Online course about distance measures

With the increasing amount of unstructured data distance measures get more and more important. I am looking for an online course or any other material which gives me a profound inside in the following areas

Distances based on edits

• Damerau-Levenshtein
• Hamming
• Levenshtein
• Optimal sting alignment

Distances based on qgrams

• qgram
• cosine
• jaccard distance

Distances based on or heuristic metrics

• Jaro
• Jaro-Winkler

Distances based on quantitative computations

• Geometric
• Manhattan

As well as the theoretical concepts of distance measures and distance functions and applications such as

• String comparison
• Fuzzy matching
• Clustering

Edit: Any implementations in R such as the agrep / agrepl function and the stringdist package are also welcome.
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