Articles by Yanchang Zhao

CFP: AusDM 2012, deadline extended to 31 August 2012

August 2, 2012 | Yanchang Zhao

The Tenth Australasian Data Mining Conference (AusDM 2012) Sydney, Australia 5-7 December 2012 http://ausdm12.togaware.com/ Deadline extended to 31 August 2012 The Australasian Data Mining Conference has established itself as the premier Australasian meeting for both practitioners and researchers in data … Continue reading → [Read more...]

Examples of profiling R code

August 1, 2012 | Yanchang Zhao

by Yanchang Zhao, RDataMining.com Below are simple examples of profiling R code, which help to find out which steps or functions are most time consuming. It is very useful for improving efficiency of R code. # profiling of running time … Continue reading → [Read more...]

2nd CFP: the 10th Australasian Data Mining Conference (AusDM 2012)

July 10, 2012 | Yanchang Zhao

The Tenth Australasian Data Mining Conference (AusDM 2012) Sydney, Australia, 5-7 December 2012 http://ausdm12.togaware.com/ The Australasian Data Mining Conference has established itself as the premier Australasian meeting for both practitioners and researchers in data mining. This year’s conference, AusDM’12, co-hosted … Continue reading → [Read more...]

Data Mining In Excel: Lecture Notes and Cases

July 10, 2012 | Yanchang Zhao

by Yanchang Zhao, RDataMining.com It is a 270-page book on data mining with Excel. It can be downloaded as a PDF file at http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.83.1393&rep=rep1&type=pdf. Below is its table of contents. - Overview of the Data Mining Process - ... [Read more...]

A tutorial on outlier detection techniques

July 4, 2012 | Yanchang Zhao

by Yanchang Zhao, RDataMining.com There is an excellent tutorial on outlier detection techniques, presented by Hans-Peter Kriegel et al. at ACM SIGKDD 2010. It presents many popular outlier detection algorithms, most of which were published between mid 1990s and 2010, … Continue reading → [Read more...]

An example on sentiment analysis with R

June 21, 2012 | Yanchang Zhao

by Yanchang Zhao, RDataMining.com There is a nice example on sentiment analysis with R at . In the example, the Wikileaks cable corpus is analyzed to track US sentiments of other countries and their presidents over time. The example describes … Continue reading → [Read more...]
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