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Follow-on Thoughts: Clustering Algorithm Improvements for Text-based Data Mining

Follow-on Thoughts: Clustering Algorithm Improvements for Text-based Data Mining

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A good night’s sleep is excellent for clearing away mental cobwebs, and has given me more perspective on Chapter 1, “Cluster-Preserving Dimension Reduction Methods,” by Howland and Park in Survey of Text Mining II: Clsutering, Classification, and Retrieval (ed. by Berry & Castellanos). If you will, please recall with me that the Howland & Park work proposed a two-step dimensionality reduction method. They successfully reduced over 20,000 “dimensions” (of words found in the overall corpus collection) to four dimensions, and…

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Survey of Text Mining II: Cluster-Preserving Dimension Reduction Methods (Chapter 1)

Survey of Text Mining II: Cluster-Preserving Dimension Reduction Methods (Chapter 1)

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Some time ago, I promised a colleague a review of an excellent book’ Survey of Text Mining II: Clustering, Classification, and Retrieval, edited by Michael W. Berry and Malu Castellanos. Overall, this book would serve well as the basis for a one-semester graduate course in specialized methods for (textual) data analytics. It presupposes an expert’s (or at least a solid journeyman’s) understanding of basic algorithms along with the issues of textual data mining / analytics. Each chapter presents a new…

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Graph Theory — Becoming "Organizing Framework"

Graph Theory — Becoming "Organizing Framework"

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Something I’ve been noting — both on my own, and in conversations with Jenn Sleeman , who’s in touch with the academic world at UMBC — Graph theory is growing in centrality as a fundamental organizing framework for many current and emerging computational processes. Specifically, anything more complex than a simple “tuple” (RDF or OWL, etc.), needs to be matched against a graph or partial graph. One good “integrative” paper is Understanding Belief Propagation and its Generalizations by J.S. Yedidia,…

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Non-Equilibrium Information Theory (DARPA group)

Non-Equilibrium Information Theory (DARPA group)

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Of possible interest — DARPA group attempting to use non-equilibrium information theory to study mobile ad hoc wireless networks (MANETs). Lots of information theory pubs, not too sure yet they’re really on to what constitutes “non-equilibrium,” worth investigating.

Equilibrium and Utility: Two Different Realms

Equilibrium and Utility: Two Different Realms

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Continuing with Beinhocker’s Origin of Wealth, it is important to distinguish carefully between some of the ideas that Beinhocker is expounding. While overall, he is doing a good job of bringing in many related thoughts and ideas, there is a slight tendency towards “mushing.” In that note, I’d like to suggest that we discern carefully between ideas involving utility (Origins, hardcover; pp. 34 & 37), and equilibrium. On pg. 34, Beinhocker begins a discussion of how utility is an underlying…

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"Origins of Wealth" – A (Multi-Part) Critical Review

"Origins of Wealth" – A (Multi-Part) Critical Review

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Over the last few months, questions of not only wealth and finances, but the underpinnings of our entire financial structure, have become paramount in many of our minds. We — that usually means you and me — and right now means the world collectively — have largely misunderstood the world’s financial structure over recent years. (Those who HAVE accurately understood are not only more secure, but substantially richer by now.) Most of us are current on “what went wrong.” Most…

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