Fix bug in chain training.

fd427873 · Matthijs Douze · GitHub · 12f181ee · fd427873
Commit fd427873 authored Jul 19, 2017 by Matthijs Douze Committed by GitHub Jul 19, 2017
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VectorTransform.cpp VectorTransform.cpp +1 -1

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--- a/VectorTransform.cpp
+++ b/VectorTransform.cpp
@@ -790,7 +790,7 @@ IndexPreTransform::~IndexPreTransform ()
 void IndexPreTransform::train (idx_t n, const float *x)
 {
    int last_untrained = 0;
-    if (index->is_trained) {
+    if (!index->is_trained) {
        last_untrained = chain.size();
    } else {
        for (int i = chain.size() - 1; i >= 0; i--) {