kaknikhil commented on a change in pull request #423: Association Rules:
Improve performance
URL: https://github.com/apache/madlib/pull/423#discussion_r305944466
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File path: src/modules/assoc_rules/assoc_rules.cpp
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@@ -109,6 +117,29 @@ gen_rules_from_cfp::SRF_next(void *user_fctx, bool
*is_last_call) {
}
}
+ // If the target max size is greater than the current number of elements to
+ // consider, there is no need to actually check for lhs or rhs sizes.
+
+ if (myfctx->max_LHS_size <= myfctx->num_elems ||
+ myfctx->max_RHS_size <= myfctx->num_elems){
+
+ int countLHS = 0;
+ int countRHS = 0;
+
+ // flags[i]=True means that element is on the lhs (and vice versa)
+ for (i = 0; i < myfctx->num_elems; ++i) {
+ if (!myfctx->flags[i]) {
+ countRHS ++;
+ } else {
+ countLHS ++;
+ }
+ }
+ if (countLHS > myfctx->max_LHS_size || countRHS >
myfctx->max_RHS_size){
+ --myfctx->num_calls;
Review comment:
Can you explain this in a comment ?
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