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via GitHub by harryhoch
, 1 year ago
matrix is singular
via Stack Overflow by user3086819
, 2 years ago
org.apache.commons.math3.linear.SingularMatrixException: matrix is singular	at org.apache.commons.math3.linear.LUDecomposition$Solver.solve(LUDecomposition.java:334)	at org.apache.commons.math3.linear.LUDecomposition$Solver.getInverse(LUDecomposition.java:387)	at edu.cmu.tetrad.util.TetradMatrix.inverse(TetradMatrix.java:362)	at edu.cmu.tetrad.util.StatUtils.partialCorrelation(StatUtils.java:1757)	at edu.cmu.tetrad.search.IndTestFisherZ.partialCorrelation(IndTestFisherZ.java:239)	at edu.cmu.tetrad.search.IndTestFisherZ.isIndependent(IndTestFisherZ.java:184)