Rank: 359 based on 189 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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06 Jun 2013 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 49 12
  • 3.66667
3.7 | 3 ratings
06 Jun 2013 Screenshot K2 algorithm for learning DAG structure in Bayesian network This is the code of Cooper's K2 algorithm proposed in 1992, quick and convenient for using. Author: Guangdi Li bayesian network, dag, data mining 52 3
  • 5.0
5.0 | 2 ratings
01 Feb 2013 causal polytree algorithm 2004 A polytree algorithm published by M. Ouerd, B. John Oommen, Stan Matwin. Author: Guangdi Li mathematics, statistics 3 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... 9 12
  • 2.85714
2.9 | 7 ratings
Comments and Ratings by Guangdi View all
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06 Jun 2013 K2 algorithm for learning DAG structure in Bayesian network This is the code of Cooper's K2 algorithm proposed in 1992, quick and convenient for using. Author: Guangdi Li

Dear Pedro:

I advise you to use software Graphviz, or draw in photoshop, or powerpoint.

Regarding the mapping of nodes in matlab, it takes extra effort to make it beautiful. You can refer to my paper: Bielza, C., Li, G. & Larrañaga, P. (2011). Multi-Dimensional Classification with Bayesian Networks. International Journal of Approximate Reasoning, 52, 705-727.

thanks for your interest!
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 :)
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06 Jun 2013 K2 algorithm for learning DAG structure in Bayesian network This is the code of Cooper's K2 algorithm proposed in 1992, quick and convenient for using. Author: Guangdi Li Li, Guangdi

Dear Pedro:

I advise you to use software Graphviz, or draw in photoshop, or powerpoint.

Regarding the mapping of nodes in matlab, it takes extra effort to make it beautiful. You can refer to my paper: Bielza, C., Li, G. & Larrañaga, P. (2011). Multi-Dimensional Classification with Bayesian Networks. International Journal of Approximate Reasoning, 52, 705-727.

thanks for your interest!
06 Jun 2013 K2 algorithm for learning DAG structure in Bayesian network This is the code of Cooper's K2 algorithm proposed in 1992, quick and convenient for using. Author: Guangdi Li Pedro

Hi, is there a way to name the nodes? Not having them show like node 1, etc. Thanks
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.
Top Tags Applied by Guangdi
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data mining, mathematics, bayesian network, statistics, classification
Files Tagged by Guangdi View all
  • 1 - 5 of
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Updated   File Tags Downloads
(last 30 days) 		Comments Rating
06 Jun 2013 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 49 12
  • 3.66667
3.7 | 3 ratings
06 Jun 2013 Screenshot K2 algorithm for learning DAG structure in Bayesian network This is the code of Cooper's K2 algorithm proposed in 1992, quick and convenient for using. Author: Guangdi Li bayesian network, dag, data mining 52 3
  • 5.0
5.0 | 2 ratings
01 Feb 2013 causal polytree algorithm 2004 A polytree algorithm published by M. Ouerd, B. John Oommen, Stan Matwin. Author: Guangdi Li mathematics, statistics 3 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... 9 12
  • 2.85714
2.9 | 7 ratings

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