diff --git a/met4j-toolbox/src/main/java/fr/inrae/toulouse/metexplore/met4j_toolbox/networkAnalysis/CompoundNet.java b/met4j-toolbox/src/main/java/fr/inrae/toulouse/metexplore/met4j_toolbox/networkAnalysis/CompoundNet.java
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+++ b/met4j-toolbox/src/main/java/fr/inrae/toulouse/metexplore/met4j_toolbox/networkAnalysis/CompoundNet.java
@@ -0,0 +1,185 @@
+package fr.inrae.toulouse.metexplore.met4j_toolbox.networkAnalysis;
+
+import fr.inrae.toulouse.metexplore.met4j_core.biodata.BioMetabolite;
+import fr.inrae.toulouse.metexplore.met4j_core.biodata.BioNetwork;
+import fr.inrae.toulouse.metexplore.met4j_core.biodata.collection.BioCollection;
+import fr.inrae.toulouse.metexplore.met4j_graph.computation.connect.weighting.*;
+import fr.inrae.toulouse.metexplore.met4j_graph.computation.transform.EdgeMerger;
+import fr.inrae.toulouse.metexplore.met4j_graph.computation.transform.VertexContraction;
+import fr.inrae.toulouse.metexplore.met4j_graph.computation.utils.ComputeAdjacencyMatrix;
+import fr.inrae.toulouse.metexplore.met4j_graph.core.WeightingPolicy;
+import fr.inrae.toulouse.metexplore.met4j_graph.core.compound.CompoundGraph;
+import fr.inrae.toulouse.metexplore.met4j_graph.core.compound.ReactionEdge;
+import fr.inrae.toulouse.metexplore.met4j_graph.io.Bionetwork2BioGraph;
+import fr.inrae.toulouse.metexplore.met4j_graph.io.ExportGraph;
+import fr.inrae.toulouse.metexplore.met4j_graph.io.NodeMapping;
+import fr.inrae.toulouse.metexplore.met4j_io.jsbml.reader.JsbmlReader;
+import fr.inrae.toulouse.metexplore.met4j_io.jsbml.reader.Met4jSbmlReaderException;
+import fr.inrae.toulouse.metexplore.met4j_io.jsbml.reader.plugin.FBCParser;
+import fr.inrae.toulouse.metexplore.met4j_io.jsbml.reader.plugin.GroupPathwayParser;
+import fr.inrae.toulouse.metexplore.met4j_io.jsbml.reader.plugin.NotesParser;
+import fr.inrae.toulouse.metexplore.met4j_io.jsbml.reader.plugin.PackageParser;
+import fr.inrae.toulouse.metexplore.met4j_mathUtils.matrix.ExportMatrix;
+import fr.inrae.toulouse.metexplore.met4j_toolbox.generic.AbstractMet4jApplication;
+import org.kohsuke.args4j.Option;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.function.Function;
+
+public class CompoundNet extends AbstractMet4jApplication {
+
+ @Option(name = "-s", usage = "input SBML file", required = true)
+ public String inputPath = null;
+
+ @Option(name = "-sc", usage = "input Side compound file", required = false)
+ public String inputSide = null;
+
+ @Option(name = "-o", usage = "output Graph file", required = true)
+ public String outputPath = null;
+
+ enum strategy {by_name,by_id}
+ @Option(name = "-mc", aliases = {"--mergecomp"}, usage = "merge compartments. " +
+ "Use names if consistent and unambiguous across compartments, or identifiers if compartment suffix is present (id in form \"xxx_y\" with xxx as base identifier and y as compartment label).")
+ public strategy mergingStrat = null;
+ public String idRegex = "^(\\w+)_\\w$";
+
+ @Option(name = "-me", aliases = {"--simple"}, usage = "merge parallel edges to produce a simple graph", required = false)
+ public boolean mergeEdges = false;
+
+ @Option(name = "-ri", aliases = {"--removeIsolatedNodes"}, usage = "remove isolated nodes", required = false)
+ public boolean removeIsolated = false;
+
+ @Option(name = "-dw", aliases = {"--degreeWeights"}, usage = "penalize traversal of hubs by using degree square weighting", forbids = {"-cw", "-sw"})
+ public Boolean degree = false;
+ @Option(name = "-cw", aliases = {"--customWeights"}, usage = "an optional file containing weights for compound pairs", forbids = {"-dw", "-sw"})
+ public String weightFile = null;
+
+ @Option(name = "-un", aliases = {"--undirected"}, usage = "create as undirected", required = false)
+ public boolean undirected = false;
+
+ @Option(name = "-tp", aliases = {"--transitionproba"}, usage = "set weight as random walk transition probability, normalized by reaction", required = false)
+ public boolean computeWeight = false;
+
+ @Option(name = "-am", aliases = {"--asmatrix"}, usage = "export as matrix (implies simple graph conversion). Default export as GML file", required = false)
+ public boolean asMatrix = false;
+
+ public static void main(String[] args) throws IOException, Met4jSbmlReaderException {
+
+ CompoundNet app = new CompoundNet();
+
+ app.parseArguments(args);
+
+ app.run();
+
+ }
+
+
+ public void run() throws IOException, Met4jSbmlReaderException {
+ System.out.print("Reading SBML...");
+ JsbmlReader reader = new JsbmlReader(this.inputPath);
+ ArrayList<PackageParser> pkgs = new ArrayList<>(Arrays.asList(
+ new NotesParser(false), new FBCParser(), new GroupPathwayParser()));
+ BioNetwork network = reader.read(pkgs);
+ System.out.println(" Done.");
+
+
+ System.out.print("Buildinig Network...");
+ Bionetwork2BioGraph builder = new Bionetwork2BioGraph(network);
+ CompoundGraph graph = builder.getCompoundGraph();
+ System.out.println(" Done.");
+
+ //Graph processing: side compound removal [optional]
+ if (inputSide != null) {
+ System.err.println("removing side compounds...");
+ NodeMapping<BioMetabolite, ReactionEdge, CompoundGraph> mapper = new NodeMapping<>(graph).skipIfNotFound();
+ BioCollection<BioMetabolite> sideCpds = mapper.map(inputSide);
+ boolean removed = graph.removeAllVertices(sideCpds);
+ if (removed) System.err.println(sideCpds.size() + " compounds removed.");
+ }
+
+ //Graph processing: set weights [optional]
+ WeightingPolicy<BioMetabolite, ReactionEdge, CompoundGraph> wp = new DefaultWeightPolicy<>();
+ if (weightFile != null) {
+ System.err.println("Setting edge weights...");
+ wp = new WeightsFromFile(weightFile);
+ } else if (degree) {
+ System.err.println("Setting edge weights...");
+ int pow = 2;
+ wp = new DegreeWeightPolicy(pow);
+ }
+ wp.setWeight(graph);
+
+ //invert graph as undirected (copy edge weight to reversed edge)
+ if(undirected){
+ System.out.print("Create Undirected...");
+ graph.asUndirected();
+ System.out.println(" Done.");
+ }
+
+ //merge compartment
+ if(mergingStrat!=null){
+ System.out.print("Merging compartments...");
+ VertexContraction vc = new VertexContraction();
+ VertexContraction.Mapper merger = mergingStrat.equals(strategy.by_name) ? new VertexContraction.MapByName() : new VertexContraction.MapByIdSubString(idRegex);
+ graph = vc.decompartmentalize(graph, merger);
+ System.out.println(" Done.");
+ }
+
+ //remove isolated nodes
+ if(removeIsolated){
+ System.out.println("Remove isolated nodes...");
+ HashSet<BioMetabolite> nodes = new HashSet<>(graph.vertexSet());
+ graph.removeIsolatedNodes();
+ nodes.removeAll(graph.vertexSet());
+ for(BioMetabolite n : nodes){
+ System.out.println("\tremoving " + n.getName());
+ }
+ System.out.println(" Done.");
+ }
+
+ //compute transitions probability from weights
+ if(computeWeight) {
+ System.out.print("Compute transition matrix...");
+ ReactionProbabilityWeight wp2 = new ReactionProbabilityWeight();
+ wp2.setWeight(graph);
+ System.out.println(" Done.");
+ }
+
+ //merge parallel edges
+ if(mergeEdges){
+ System.out.print("Merging edges...");
+ EdgeMerger.mergeEdgesWithOverride(graph);
+ System.out.println(" Done.");
+ }
+
+ //export graph
+ System.out.print("Exporting...");
+ if(asMatrix){
+ ComputeAdjacencyMatrix adjBuilder = new ComputeAdjacencyMatrix(graph);
+ if(!computeWeight) adjBuilder.parallelEdgeWeightsHandling((u, v) -> Math.max(u,v));
+ ExportMatrix.toCSV(this.outputPath,adjBuilder.getadjacencyMatrix());
+ }else{
+ ExportGraph.toGmlWithAttributes(graph, this.outputPath, true);
+ }
+ System.out.println(" Done.");
+ return;
+ }
+
+ @Override
+ public String getLabel() {return this.getClass().getSimpleName();}
+
+ @Override
+ public String getLongDescription() {
+ return "Metabolic networks used for quantitative analysis often contain links that are irrelevant for graph-based structural analysis. For example, inclusion of side compounds or modelling artifacts such as 'biomass' nodes.\n" +
+ "While Carbon Skeleton Graph offer a relevant alternative topology for graph-based analysis, it requires compounds' structure information, usually not provided in model, and difficult to retrieve for model with sparse cross-reference annotations.\n" +
+ "In contrary to the SBML2Graph app that performs a raw conversion of the SBML content, the present app propose a fine-tuned creation of compound graph from predefined list of side compounds and degree² weighting to get relevant structure without structural data."+
+ "This app also enable Markov-chain based analysis of metabolic networks by computing reaction-normalized transition probabilities on the network.";
+ }
+
+ @Override
+ public String getShortDescription() {return "Advanced creation of a compound graph representation of a SBML file content";}
+}
+