1 // Copyright (C) The Lightning Authors. All rights reserved.
3 // SPDX-License-Identifier: AGPL-3.0
11 "github.com/kshedden/statmodel/glm"
12 "github.com/kshedden/statmodel/statmodel"
15 var glmConfig = &glm.Config{
16 Family: glm.NewFamily(glm.BinomialFamily),
21 func pvalueGLM(sampleInfo []sampleInfo, onehot []bool) float64 {
22 nPCA := len(sampleInfo[0].pcaComponents)
23 pcaNames := make([]string, 0, nPCA)
24 data := make([][]statmodel.Dtype, 0, nPCA)
25 for pca := 0; pca < nPCA; pca++ {
26 series := make([]statmodel.Dtype, 0, len(sampleInfo))
27 for _, si := range sampleInfo {
29 series = append(series, si.pcaComponents[pca])
32 data = append(data, series)
33 pcaNames = append(pcaNames, fmt.Sprintf("pca%d", pca))
36 variant := make([]statmodel.Dtype, 0, len(sampleInfo))
37 outcome := make([]statmodel.Dtype, 0, len(sampleInfo))
38 for row, si := range sampleInfo {
41 variant = append(variant, 1)
43 variant = append(variant, 0)
46 outcome = append(outcome, 1)
48 outcome = append(outcome, 0)
52 data = append(data, variant, outcome)
54 dataset := statmodel.NewDataset(data, append(pcaNames, "variant", "outcome"))
55 model, err := glm.NewGLM(dataset, "outcome", pcaNames, glmConfig)
59 resultCov := model.Fit()
60 logCov := resultCov.LogLike()
61 model, err = glm.NewGLM(dataset, "outcome", append([]string{"variant"}, pcaNames...), glmConfig)
65 resultComp := model.Fit()
66 logComp := resultComp.LogLike()
67 return chisquared.Survival(-2 * (logCov - logComp))