@Test public void test1() { GeneralizedSemPm pm = makeTypicalPm(); print(pm); Node x1 = pm.getNode("X1"); Node x2 = pm.getNode("X2"); Node x3 = pm.getNode("X3"); Node x4 = pm.getNode("X4"); Node x5 = pm.getNode("X5"); SemGraph graph = pm.getGraph(); List<Node> variablesNodes = pm.getVariableNodes(); print(variablesNodes); List<Node> errorNodes = pm.getErrorNodes(); print(errorNodes); try { pm.setNodeExpression(x1, "cos(B1) + E_X1"); print(pm); String b1 = "B1"; String b2 = "B2"; String b3 = "B3"; Set<Node> nodes = pm.getReferencingNodes(b1); assertTrue(nodes.contains(x1)); assertTrue(!nodes.contains(x2) && !nodes.contains(x2)); Set<String> referencedParameters = pm.getReferencedParameters(x3); print("Parameters referenced by X3 are: " + referencedParameters); assertTrue(referencedParameters.contains(b1) && referencedParameters.contains(b2)); assertTrue(!(referencedParameters.contains(b1) && referencedParameters.contains(b3))); Node e_x3 = pm.getNode("E_X3"); // for (Node node : pm.getNodes()) { Set<Node> referencingNodes = pm.getReferencingNodes(node); print("Nodes referencing " + node + " are: " + referencingNodes); } for (Node node : pm.getVariableNodes()) { Set<Node> referencingNodes = pm.getReferencedNodes(node); print("Nodes referenced by " + node + " are: " + referencingNodes); } Set<Node> referencingX3 = pm.getReferencingNodes(x3); assertTrue(referencingX3.contains(x4)); assertTrue(!referencingX3.contains(x5)); Set<Node> referencedByX3 = pm.getReferencedNodes(x3); assertTrue( referencedByX3.contains(x1) && referencedByX3.contains(x2) && referencedByX3.contains(e_x3) && !referencedByX3.contains(x4)); pm.setNodeExpression(x5, "a * E^X2 + X4 + E_X5"); Node e_x5 = pm.getErrorNode(x5); graph.setShowErrorTerms(true); assertTrue(e_x5.equals(graph.getExogenous(x5))); pm.setNodeExpression(e_x5, "Beta(3, 5)"); print(pm); assertEquals("Split(-1.5,-.5,.5,1.5)", pm.getParameterExpressionString(b1)); pm.setParameterExpression(b1, "N(0, 2)"); assertEquals("N(0, 2)", pm.getParameterExpressionString(b1)); GeneralizedSemIm im = new GeneralizedSemIm(pm); print(im); DataSet dataSet = im.simulateDataAvoidInfinity(10, false); print(dataSet); } catch (ParseException e) { e.printStackTrace(); } }