fix bugs in _prepare_text and IntruderScorer prompt formatting

.gitignore

@@ -183,3 +183,4 @@ results/
 statistics/
 .embedding_cache/
 wandb/
+uv.lock

delphi/scorers/classifier/intruder.py

@@ -275,7 +275,7 @@ def _build_prompt(
         """
 
         examples = "\n".join(
-            f"Example {i}: {example}" for i, example in enumerate(sample.examples)
+            f"Example {i}:{example}" for i, example in enumerate(sample.examples)
         )
 
         return self.prompt(examples=examples)
@@ -319,7 +319,6 @@ async def _generate(self, sample: IntruderSentence) -> IntruderResult:
             # default result is a error
             return IntruderResult()
         else:
-
             try:
                 interpretation, prediction = self._parse(response.text)
             except Exception as e:

delphi/scorers/classifier/sample.py

@@ -91,6 +91,7 @@ def _prepare_text(
     str_toks = example.str_tokens
     assert str_toks is not None, "str_toks were not set"
     clean = "".join(str_toks)
+
     # Just return text if there's no highlighting
     if not highlighted:
         return clean, str_toks
@@ -125,9 +126,17 @@ def threshold_check(i):
     token_pos = len(str_toks) - len(str_toks) // 4
     if token_pos in below_threshold:
         random_indices = [token_pos]
-        if n_incorrect > 1:
+
+        num_remaining_tokens_to_highlight = n_incorrect - 1
+        if num_remaining_tokens_to_highlight > 0:
+            remaining_tokens_below_threshold = below_threshold.tolist()
+            remaining_tokens_below_threshold.remove(token_pos)
+
             random_indices.extend(
-                random.sample(below_threshold.tolist(), n_incorrect - 1)
+                random.sample(
+                    remaining_tokens_below_threshold,
+                    num_remaining_tokens_to_highlight,
+                )
             )
     else:
         random_indices = random.sample(below_threshold.tolist(), n_incorrect)