Merge branch 'fourcade2018-master-patch-40676' into 'master'

Update README.md

See merge request !1

README.md

 # README
 
-## Info:
-
-Feel free to use these lines as you wish. These programs load a graph in main memory as (i) a list of edges, (ii) an adjacency matrix or (iii) an adjacency list.
 
 ## To compile:
 
-"gcc edgelist.c -O9 -o edgelist"  
-"gcc adjmatrix.c -O9 -o adjmatrix"  
-"gcc adjarray.c -O9 -o adjarray"
+make
 
+should compile on any UNIX based system
 
-## To execute:
 
-"./edgelist edgelist.txt"  
-"./adjmatrix edgelist.txt"  
-"./adjarray edgelist.txt"
+## To execute:
 
-"edgelist.txt" should contain the graph: one edge on each line (two unsigned long (nodes' ID) separated by a space).  
-The program will load the graph in main memory and then terminate.
+./TP1 'path to a graph file'
 
-## Performance:
+./TP2 'path to a graph file'
 
-- edgelist: up to 500 million edges on my laptop with 8G of RAM. Takes more or less 1.6G of RAM and 25 seconds (I have an SSD hardrive) for 100M edges.
-- adjmatrix: up to 200.000 nodes on my laptop with 8G of RAM. Takes more or less 4G of RAM and 10 seconds for 100.000 nodes.
-- adjlist: up to 200 million edges on my laptop with 8G of RAM: takes more or less 4G of RAM and 30 seconds for 100M edges.
+./TP3 'path to a graph file' /!\ TP3 should have files "alr21--pageCategList--enwiki--20071018.txt" and file "alr21--categDAG--dirLinks--enwiki-20071018.txt" (found at : http://cfinder.org/wiki/?n=Main.Data#toc1) in the safe folder as the executable for EXERCISE 3 to work properly
 
-adjmatrix is much less scallable than the two other programs for sparse graphs. adjmatrix uses O(n^2) memory (n^2 boolean values (note that adjmatrix uses 1 byte to encode a boolean value and not 1 bit...)), while edgelist uses O(m) (2m unsigned) and adjlist uses O(m+n) (4m+2n unsigned).
+./TP4 'path to a graph file'
 
-## Note:
 
-If the graph is directed (and weighted) with selfloops and you want to make it undirected unweighted without selfloops, use the following linux command line.  
-awk '{if ($1<$2) print $1" "$2;else if ($2<$1) print $2" "$1}' net.txt | sort -n -k1,2 -u > net2.txt
+graph files should contain the graph: one edge on each line (two unsigned long (nodes' ID) separated by a space).
 
-## Initial contributors
 
-Maximilien Danisch  
-September 2017  
-http://bit.ly/danisch  
-maximilien.danisch@gmail.com