ramesesz commented on code in PR #1990:
URL: https://github.com/apache/systemds/pull/1990#discussion_r1468874941
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scripts/builtin/tSNE.dml:
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@@ -119,7 +161,7 @@ return(matrix[double] P)
while (mean(abs(Hdiff)) > tol & itr < 50) {
P = exp(-D * beta)
P = P * ZERODIAG
- sum_Pi = rowSums(P)
+ sum_Pi = rowSums(P) = 1e-12
Review Comment:
My mistake, this should be `sum_Pi = rowSums(P) + 1e-12`. This is to prevent
zero division errors that came up multiple times during the experiments.
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