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Parallel algorithm for closed itemsetmining
Home Page: http://melindaplcm.ligforge.imag.fr/
License: GNU Lesser General Public License v3.0
This project forked from bnegreve/plcm
Parallel algorithm for closed itemsetmining
Home Page: http://melindaplcm.ligforge.imag.fr/
License: GNU Lesser General Public License v3.0
PLCM is a frequent itemset mining algorithm based on the LCM algorithm. ################## #### Download #### ################## Latest version at: http://people.cs.kuleuven.be/~benjamin.negrevergne/plcm/plcm_latest.tar.gz ################################## ##### Reference publications ##### ################################## Discovering Closed Frequent Itemsets on Multicore: Parallelizing Computations and Optimizing Memory Accesses. Benjamin Negrevergne Alexandre Termier Jean-François Méhaut And Takeaki Uno. LCM ver. 2: Efficient Mining Algorithms for Frequent/Closed/Maximal Itemsets Takeaki Uno1, Masashi Kiyomi, Hiroki Arimura2 ################### ##### Compile ##### ################### ./configure make make install ### debug mode ### ./configure --enable-debug=yes make make install ################# ###### Run ###### ################# plcm <dataset file> <absolute threshold> <output file> [ -t number of threads ] (If output is '-' then plcm dumps itemsets on the standard output.) ####################### ##### File format ##### ####################### ### Input file ### Dataset must be a single ASCII file. Each line is a transaction. Each transaction contains distinct items. Transaction must be ordered. Last line must be empty. eg. --- file test.dat --- 1 2 4 6 1 2 3 5 7 2 3 is a valid dataset. ### Output file ### plcm output files have the following format: * each line is a frequent closed itemset * frequency is stored at the end of the line into brackets. eg. running plcm on test.dat dataset, with the following command ./plcm test.dat 2 out.dat -t 1 will generate the following file --- file out.dat --- 2 (3) 1 2 (2) 3 2 (2) You can change the output format by modifying the dumpItemset() function in plcm.hpp and plcm.cpp ################ ##### BUGs ##### ################ Report bugs and/or comments at: [email protected] My FirstName is Benjamin My LastName is Negrevergne If you observe a bug, please compile in debug mode and report the error message if any. (To compile in debug mode use ./configure --enable-debug=yes.) ###################### ##### Developers ##### ###################### To checkout the source tree: git clone <plcm_git_repos> plcm cd plcm git submodule init git submodule update Compile with the standard procedure (see Compile section) ./configure make make install
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