only call `words_normalized` once

qurator/dinglehopper/cli.py

@@ -106,16 +106,15 @@ def process(gt, ocr, report_prefix, *, metrics=True, textequiv_level="region"):
 
     gt_text = extract(gt, textequiv_level=textequiv_level)
     ocr_text = extract(ocr, textequiv_level=textequiv_level)
+    gt_words = words_normalized(gt_text)
+    ocr_words = words_normalized(ocr_text)
 
     cer, n_characters = character_error_rate_n(gt_text, ocr_text)
-    wer, n_words = word_error_rate_n(gt_text, ocr_text)
-
     char_diff_report = gen_diff_report(
         gt_text, ocr_text, css_prefix="c", joiner="", none="·"
     )
 
-    gt_words = words_normalized(gt_text)
-    ocr_words = words_normalized(ocr_text)
+    wer, n_words = word_error_rate_n(gt_words, ocr_words)
     word_diff_report = gen_diff_report(
         gt_words, ocr_words, css_prefix="w", joiner=" ", none="⋯"
     )

qurator/dinglehopper/cli_line_dirs.py

@@ -53,6 +53,8 @@ def process(gt_dir, ocr_dir, report_prefix, *, metrics=True):
 
         gt_text = plain_extract(os.path.join(gt_dir, gt), include_filename_in_id=True)
         ocr_text = plain_extract(os.path.join(ocr_dir, ocr), include_filename_in_id=True)
+        gt_words = words_normalized(gt_text)
+        ocr_words = words_normalized(ocr_text)
 
         # Compute CER
         l_cer, l_n_characters = character_error_rate_n(gt_text, ocr_text)
@@ -64,7 +66,7 @@ def process(gt_dir, ocr_dir, report_prefix, *, metrics=True):
             n_characters = n_characters + l_n_characters
 
         # Compute WER
-        l_wer, l_n_words = word_error_rate_n(gt_text, ocr_text)
+        l_wer, l_n_words = word_error_rate_n(gt_words, ocr_words)
         if wer is None:
             wer, n_words = l_wer, l_n_words
         else:
@@ -76,8 +78,6 @@ def process(gt_dir, ocr_dir, report_prefix, *, metrics=True):
         char_diff_report += gen_diff_report(
             gt_text, ocr_text, css_prefix="l{0}-c".format(k), joiner="", none="·"
         )
-        gt_words = words_normalized(gt_text)
-        ocr_words = words_normalized(ocr_text)
         word_diff_report += gen_diff_report(
             gt_words, ocr_words, css_prefix="l{0}-w".format(k), joiner=" ", none="⋯"
         )