feat: template top and diverse program metrics prefix

Author: FunMelon

openevolve/prompt/sampler.py

@@ -322,11 +322,11 @@ def _format_evolution_history(
                 for name, value in program.get("metrics", {}).items():
                     if isinstance(value, (int, float)):
                         try:
-                            key_features.append(f"Performs well on {name} ({value:.4f})")
+                            key_features.append(self.template_manager.get_fragment("top_program_metrics_prefix") + f" {name} ({value:.4f})")
                         except (ValueError, TypeError):
-                            key_features.append(f"Performs well on {name} ({value})")
+                            key_features.append(self.template_manager.get_fragment("top_program_metrics_prefix") + f" {name} ({value})")
                     else:
-                        key_features.append(f"Performs well on {name} ({value})")
+                        key_features.append(self.template_manager.get_fragment("top_program_metrics_prefix") + f" {name} ({value})")
 
             key_features_str = ", ".join(key_features)
 
@@ -369,7 +369,7 @@ def _format_evolution_history(
                     key_features = program.get("key_features", [])
                     if not key_features:
                         key_features = [
-                            f"Alternative approach to {name}"
+                            self.template_manager.get_fragment("diverse_program_metrics_prefix") + f" {name}"
                             for name in list(program.get("metrics", {}).keys())[
                                 :2
                             ]  # Just first 2 metrics

openevolve/prompts/defaults/fragments.json

@@ -20,5 +20,7 @@
   "diverse_programs_title": "Diverse Programs",
   "attempt_all_metrics_improved": "Improvement in all metrics",
   "attempt_all_metrics_regressed": "Regression in all metrics",
-  "attempt_mixed_metrics": "Mixed results"
+  "attempt_mixed_metrics": "Mixed results",
+  "top_program_metrics_prefix": "Performs well on",
+  "diverse_program_metrics_prefix": "Alternative approach to"
 }