Fix a corner case in h-cls greedy resolver (#204)

* Fix a corner case in h-cls greedy resolver

* Prevent greedy resolver to insert parents which were not predicted

* Revert "Prevent greedy resolver to insert parents which were not predicted"

This reverts commit 0eb8ec6.

Author: sovrasov

model_api/cpp/models/src/classification_model.cpp

@@ -606,7 +606,7 @@ std::map<std::string, float> GreedyLabelsResolver::resolve_labels(const std::vec
 
     std::vector<std::string> candidates;
     for (const auto& g : label_groups) {
-        if (g.size() == 1) {
+        if (g.size() == 1 && label_to_prob[g[0]] > 0.f) {
             candidates.push_back(g[0]);
         }
         else {

model_api/python/model_api/models/classification.py

@@ -410,7 +410,7 @@ def get_predecessors(lbl, candidates):
 
         candidates = []
         for g in self.label_groups:
-            if len(g) == 1:
+            if len(g) == 1 and label_to_prob[g[0]] > 0.0:
                 candidates.append(g[0])
             else:
                 max_prob = 0.0