Rank: 624 based on 130 downloads (last 30 days) and 14 files submitted
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Guangdi Li

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Medical school of K.U.Leuven

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01 Feb 2013 causal polytree algorithm 2004 A polytree algorithm published by M. Ouerd, B. John Oommen, Stan Matwin. Author: Guangdi Li mathematics, statistics 4 0
01 Feb 2013 Ancestral polytree The code here provides the algorithm of learning ancestral polytree. Author: Guangdi Li mathematics, statistics, modeling 3 0
20 Sep 2011 Fisher's exact test with n x m contingency table Do you have problem with Fisher's exact test where the contingency table is more than 2*2? Author: Guangdi Li statistics test, mathematics, category, data mining, fishers exact conditi... 15 12
  • 2.85714
2.9 | 7 ratings
31 Jan 2011 Discretization algorithms: Class-Attribute Contingency Coefficient To discrete continuous data, CACC is a promising discretization scheme proposed in 2008 Author: Guangdi Li discretization, data mining, classification, error message 6 20
  • 3.33333
3.3 | 4 ratings
29 Nov 2010 Screenshot Maximum(minimum) Weight Spanning Tree ( Directed ) For learning "Directed Maximum Spanning Tree", Chu-Liu/Edmonds Algorithm is implemented here. Author: Guangdi Li spanning tree, learning algorithm, data mining, graphic function, optimization 26 12
  • 3.66667
3.7 | 3 ratings
Comments and Ratings by Guangdi View all
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02 Dec 2011 Maximum Weight Spanning tree (Undirected) Chu-Liu-Edmonds Algorithm for learning "Undirected Maximum Weight Spanning tree" is proposed here. Author: Guangdi Li

I would like to help, but I don't have time, sorry.
02 Dec 2011 Maximum Weight Spanning tree (Undirected) Chu-Liu-Edmonds Algorithm for learning "Undirected Maximum Weight Spanning tree" is proposed here. Author: Guangdi Li

I guess that's the task of your project, no?
20 Sep 2011 Fisher's exact test with n x m contingency table Do you have problem with Fisher's exact test where the contingency table is more than 2*2? Author: Guangdi Li

Thanks for report, Karin.

The infinite problem is solved and a new version based on matlab-R is provided(for those who are familiar with fisher test in R).
05 Sep 2011 Discretization algorithms: Class-Attribute Contingency Coefficient To discrete continuous data, CACC is a promising discretization scheme proposed in 2008 Author: Guangdi Li

You can use the returned variable: DiscretizationSet, to discrete new continuous data. DiscretizationSet is a matrix containing K row and F columns, each column represent one feature, following your input feature data, then the cutoff is saved in corresponding column for your new discretization.
hope it is clear :)
06 Apr 2011 Fisher's exact test with n x m contingency table Do you have problem with Fisher's exact test where the contingency table is more than 2*2? Author: Guangdi Li

I only did the programming based on the mathworld website. Indeed, there may be some fast and efficient way for n * m table, if so, please let me know the reference for further improvement.Thanks for comments.
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15 May 2013 Maximum(minimum) Weight Spanning Tree ( Directed ) For learning "Directed Maximum Spanning Tree", Chu-Liu/Edmonds Algorithm is implemented here. Author: Guangdi Li Sesen, Berkan

I spent half a day to get this working. My mex compiler on Windows MatLab works, but SearchCycleNode.c cannot be compiled...
If you are using Windows, this submission is useless I guess. The author claims it works with Linux matlab but I couldn't test.
15 May 2013 Discretization algorithms: Class-Attribute Contingency Coefficient To discrete continuous data, CACC is a promising discretization scheme proposed in 2008 Author: Guangdi Li Zaragoza, Julio

I closed my Karin Zachinelly account. My CACC implementation files are in Julio Zaragoza's account now.

Please, if you find any bugs in my implementation, let me know.
20 Feb 2013 Discretization algorithms: Class-Attribute Contingency Coefficient To discrete continuous data, CACC is a promising discretization scheme proposed in 2008 Author: Guangdi Li Zachinelly, karin

This implementation is not complete and it is actually incorrect, for starters the CACC is not computed. This code obtains y' and takes that as the CACC (which is obviously wrong). And the algorithm is not implemented in full as described in the paper.

That is why people that tries this code with the data from the paper obtain different results.

People please check my (hopefully correct) implementation and let me know about any bugs.
20 Feb 2013 Discretization algorithms: Class-Attribute Contingency Coefficient To discrete continuous data, CACC is a promising discretization scheme proposed in 2008 Author: Guangdi Li Zachinelly, karin

17 Jan 2013 Fisher's exact test with n x m contingency table Do you have problem with Fisher's exact test where the contingency table is more than 2*2? Author: Guangdi Li Simon

As has been addressed before, this script does not calculate the p-value. Please see Metha and Patel (1986) for improving your code.
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data mining, mathematics, bayesian network, statistics, classification
Files Tagged by Guangdi View all
  • 1 - 5 of
  • 14
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
01 Feb 2013 causal polytree algorithm 2004 A polytree algorithm published by M. Ouerd, B. John Oommen, Stan Matwin. Author: Guangdi Li mathematics, statistics 4 0
01 Feb 2013 Ancestral polytree The code here provides the algorithm of learning ancestral polytree. Author: Guangdi Li mathematics, statistics, modeling 3 0
20 Sep 2011 Fisher's exact test with n x m contingency table Do you have problem with Fisher's exact test where the contingency table is more than 2*2? Author: Guangdi Li statistics test, mathematics, category, data mining, fishers exact conditi... 15 12
  • 2.85714
2.9 | 7 ratings
31 Jan 2011 Discretization algorithms: Class-Attribute Contingency Coefficient To discrete continuous data, CACC is a promising discretization scheme proposed in 2008 Author: Guangdi Li discretization, data mining, classification, error message 6 20
  • 3.33333
3.3 | 4 ratings
29 Nov 2010 Screenshot Maximum(minimum) Weight Spanning Tree ( Directed ) For learning "Directed Maximum Spanning Tree", Chu-Liu/Edmonds Algorithm is implemented here. Author: Guangdi Li spanning tree, learning algorithm, data mining, graphic function, optimization 26 12
  • 3.66667
3.7 | 3 ratings

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