get rid of 'ok' and 'miss'

2 files changed, 100 insertions, 102 deletions

diff --git a/fuzzycat/common.py b/fuzzycat/common.py
index 2bb25c6..9ee1239 100644
--- a/fuzzycat/common.py
+++ b/fuzzycat/common.py
@@ -3,7 +3,8 @@ from enum import Enum
 
 class Status(str, Enum):
     """
-    Match status.
+    Match status. The match status "TODO" is a placeholder, e.g. to trigger a
+    test failure.
     """
     AMBIGUOUS = 'ambiguous'
     DIFFERENT = 'different'
@@ -13,54 +14,51 @@ class Status(str, Enum):
     TODO = 'todo'
 
 
-class OK(str, Enum):
+class Reason(str, Enum):
     """
-    Reason for assuming we have a match.
+    Reason for assuming we have a match or miss. No hard rules on naming.
     """
-    ARXIV_VERSION = 'ok.arxiv_version'
-    CUSTOM_BSI_SUBDOC = 'ok.custom_bsi_subdoc'
-    CUSTOM_BSI_UNDATED = 'ok.custom_bsi_undated'
-    CUSTOM_IEEE_ARXIV = 'ok.custom_ieee_arxiv'
-    DATACITE_RELATED_ID = 'ok.datacite_related_id'
-    DATACITE_VERSION = 'ok.datacite_version'
-    DOI = 'ok.doi'
-    DUMMY = 'ok.dummy'
-    FIGSHARE_VERSION = 'ok.figshare_version'
-    JACCARD_AUTHORS = 'ok.jaccard_authors'
-    PMID_DOI_PAIR = 'ok.pmid_doi_pair'
-    PREPRINT_PUBLISHED = 'ok.preprint_published'
-    SLUG_TITLE_AUTHOR_MATCH = 'ok.slug_title_author_match'
-    TITLE_AUTHOR_MATCH = 'ok.title_author_match'
-    TOKENIZED_AUTHORS = 'ok.tokenized_authors'
-    VERSIONED_DOI = 'ok.versioned_doi'
-    WORK_ID = 'ok.work_id'
-
-
-class Miss(str, Enum):
-    """
-    Reasons indicating mismatch.
-    """
-    APPENDIX = 'miss.appendix'
-    ARXIV_VERSION = 'miss.arxiv_version'
-    BLACKLISTED = 'miss.blacklisted'
-    BLACKLISTED_FRAGMENT = 'miss.blacklisted_fragment'
-    BOOK_CHAPTER = 'miss.book_chapter'
-    CHEM_FORMULA = 'miss.chem_formula'
-    COMPONENT = 'miss.component'
-    CONTAINER = 'miss.container'
-    CONTRIB_INTERSECTION_EMPTY = 'miss.contrib_intersection_empty'
-    CUSTOM_IOP_MA_PATTERN = 'miss.custom_iop_ma_pattern'
-    CUSTOM_PREFIX_10_14288 = 'miss.custom_prefix_10_14288'
-    CUSTOM_PREFIX_10_5860_CHOICE_REVIEW = 'miss.custom_prefix_10_5860_choice_review'
-    CUSTOM_PREFIX_10_7916 = 'miss.custom_prefix_10_7916'
-    CUSTOM_VHS = 'miss.vhs'  # https://fatcat.wiki/release/44gk5ben5vghljq6twm7lwmxla
-    DATASET_DOI = 'miss.dataset_doi'
-    JSTOR_ID = 'miss.jstor_id'
-    NUM_DIFF = 'miss.num_diff'
-    PAGE_COUNT = 'miss.page_count'
-    RELEASE_TYPE = 'miss.release_type'
-    SHARED_DOI_PREFIX = 'miss.shared_doi_prefix'
-    SHORT_TITLE = 'miss.short_title'
-    SUBTITLE = 'miss.subtitle'
-    TITLE_FILENAME = 'miss.title_filename'
-    YEAR = 'miss.year'
+    APPENDIX = 'appendix'
+    ARXIV_VERSION = 'arxiv_version'
+    BLACKLISTED = 'blacklisted'
+    BLACKLISTED_FRAGMENT = 'blacklisted_fragment'
+    BOOK_CHAPTER = 'book_chapter'
+    CHEM_FORMULA = 'chem_formula'
+    COMPONENT = 'component'
+    CONTAINER = 'container'
+    CONTAINER_NAME_BLACKLIST = 'container_name_blacklist'
+    CONTRIB_INTERSECTION_EMPTY = 'contrib_intersection_empty'
+    CUSTOM_BSI_SUBDOC = 'custom_bsi_subdoc'
+    CUSTOM_BSI_UNDATED = 'custom_bsi_undated'
+    CUSTOM_IEEE_ARXIV = 'custom_ieee_arxiv'
+    CUSTOM_IOP_MA_PATTERN = 'custom_iop_ma_pattern'
+    CUSTOM_PREFIX_10_14288 = 'custom_prefix_10_14288'
+    CUSTOM_PREFIX_10_5860_CHOICE_REVIEW = 'custom_prefix_10_5860_choice_review'
+    CUSTOM_PREFIX_10_7916 = 'custom_prefix_10_7916'
+    CUSTOM_VHS = 'vhs'  # https://fatcat.wiki/release/44gk5ben5vghljq6twm7lwmxla
+    DATACITE_RELATED_ID = 'datacite_related_id'
+    DATACITE_VERSION = 'datacite_version'
+    DATASET_DOI = 'dataset_doi'
+    DOI = 'doi'
+    DUMMY = 'dummy'
+    FIGSHARE_VERSION = 'figshare_version'
+    JACCARD_AUTHORS = 'jaccard_authors'
+    JSTOR_ID = 'jstor_id'
+    MAX_CLUSTER_SIZE_EXCEEDED = 'max_cluster_size_exceeded'
+    NUM_DIFF = 'num_diff'
+    PAGE_COUNT = 'page_count'
+    PMID_DOI_PAIR = 'pmid_doi_pair'
+    PREPRINT_PUBLISHED = 'preprint_published'
+    PUBLISHER_BLACKLIST = 'publisher_blacklist'
+    RELEASE_TYPE = 'release_type'
+    SHARED_DOI_PREFIX = 'shared_doi_prefix'
+    SHORT_TITLE = 'short_title'
+    SINGULAR_CLUSTER = 'singular_cluster'
+    SLUG_TITLE_AUTHOR_MATCH = 'slug_title_author_match'
+    SUBTITLE = 'subtitle'
+    TITLE_AUTHOR_MATCH = 'title_author_match'
+    TITLE_FILENAME = 'title_filename'
+    TOKENIZED_AUTHORS = 'tokenized_authors'
+    VERSIONED_DOI = 'versioned_doi'
+    WORK_ID = 'work_id'
+    YEAR = 'year'
diff --git a/fuzzycat/verify.py b/fuzzycat/verify.py
index 94e8327..973ea13 100644
--- a/fuzzycat/verify.py
+++ b/fuzzycat/verify.py
@@ -74,7 +74,7 @@ import sys
 
 from glom import PathAccessError, glom
 
-from fuzzycat.common import OK, Miss, Status
+from fuzzycat.common import Status, Reason
 from fuzzycat.data import (CONTAINER_NAME_BLACKLIST, PUBLISHER_BLACKLIST, TITLE_BLACKLIST,
                            TITLE_FRAGMENT_BLACKLIST)
 from fuzzycat.utils import (author_similarity_score, contains_chemical_formula, dict_key_exists,
@@ -115,19 +115,19 @@ class GroupVerifier:
             doc = json.loads(line)
             k, vs = get_key_values(doc)
             if len(vs) < 2:
-                self.counter["skip.unique"] += 1
+                self.counter[Reason.SINGULAR_CLUSTER] += 1
                 continue
             if len(vs) > self.max_cluster_size:
-                self.counter["skip.too_large"] += 1
+                self.counter[Reason.MAX_CLUSTER_SIZE_EXCEEDED] += 1
                 continue
             for a, b in itertools.combinations(vs, r=2):
                 for re in (a, b):
                     container_name = re.get("extra", {}).get("container_name", "") or ""
                     if container_name.lower().strip() in CONTAINER_NAME_BLACKLIST:
-                        self.counter["skip.container_name_blacklist"] += 1
+                        self.counter[Reason.CONTAINER_NAME_BLACKLIST] += 1
                         continue
                     if re.get("publisher", "").lower().strip() in PUBLISHER_BLACKLIST:
-                        self.counter["skip.publisher_blacklist"] += 1
+                        self.counter[Reason.PUBLISHER_BLACKLIST] += 1
                         continue
                 result, reason = verify(a, b)
                 self.counter[reason] += 1
@@ -146,12 +146,12 @@ def verify(a, b):
     """
     try:
         if glom(a, "ext_ids.doi") == glom(b, "ext_ids.doi"):
-            return (Status.EXACT, OK.DOI)
+            return (Status.EXACT, Reason.DOI)
     except PathAccessError:
         pass
 
     if a.get("work_id") and a.get("work_id") == b.get("work_id"):
-        return (Status.EXACT, OK.WORK_ID)
+        return (Status.EXACT, Reason.WORK_ID)
 
     a_title = a.get("title", "")
     a_title_lower = a_title.lower()
@@ -159,27 +159,27 @@ def verify(a, b):
     b_title_lower = b_title.lower()
 
     if len(a_title) < 5:
-        return (Status.AMBIGUOUS, Miss.SHORT_TITLE)
+        return (Status.AMBIGUOUS, Reason.SHORT_TITLE)
     if a_title_lower in TITLE_BLACKLIST:
-        return (Status.AMBIGUOUS, Miss.BLACKLISTED)
+        return (Status.AMBIGUOUS, Reason.BLACKLISTED)
 
     for fragment in TITLE_FRAGMENT_BLACKLIST:
         if fragment in a_title_lower:
-            return (Status.AMBIGUOUS, Miss.BLACKLISTED_FRAGMENT)
+            return (Status.AMBIGUOUS, Reason.BLACKLISTED_FRAGMENT)
 
     # https://fatcat.wiki/release/rnso2swxzvfonemgzrth3arumi,
     # https://fatcat.wiki/release/caxa7qbfqvg3bkgz4nwvapgnvi
     if "subject index" in a_title_lower and "subject index" in b_title_lower:
         try:
             if glom(a, "container_id") != glom(b, "container_id"):
-                return (Status.DIFFERENT, Miss.CONTAINER)
+                return (Status.DIFFERENT, Reason.CONTAINER)
         except PathAccessError:
             pass
 
     try:
         if a_title and a_title == b_title and glom(a, "extra.datacite.metadataVersion") != glom(
                 b, "extra.datacite.metadataVersion"):
-            return (Status.EXACT, OK.DATACITE_VERSION)
+            return (Status.EXACT, Reason.DATACITE_VERSION)
     except PathAccessError:
         pass
 
@@ -191,7 +191,7 @@ def verify(a, b):
             # https://fatcat.wiki/release/63g4ukdxajcqhdytqla6du3t3u,
             # https://fatcat.wiki/release/rz72bzfevzeofdeb342c6z45qu;
             # https://api.datacite.org/application/vnd.datacite.datacite+json/10.14288/1.0011045
-            return (Status.DIFFERENT, Miss.CUSTOM_PREFIX_10_14288)
+            return (Status.DIFFERENT, Reason.CUSTOM_PREFIX_10_14288)
     except PathAccessError:
         pass
 
@@ -200,7 +200,7 @@ def verify(a, b):
         b_doi = glom(b, "ext_ids.doi")
         if has_doi_prefix(a_doi, "10.3403") and has_doi_prefix(b_doi, "10.3403"):
             if a_doi + "u" == b_doi or b_doi + "u" == a_doi:
-                return (Status.STRONG, OK.CUSTOM_BSI_UNDATED)
+                return (Status.STRONG, Reason.CUSTOM_BSI_UNDATED)
             # Reference to subdocument.
             # https://api.fatcat.wiki/v0/release/tcro5wr6brhqnf5wettyiauw34
             # https://api.fatcat.wiki/v0/release/s7a4o5v5gfg4tbzna6poyg7nzy
@@ -208,7 +208,7 @@ def verify(a, b):
                                         and not dict_key_exists(b, "extra.subtitle")) or
                                        (dict_key_exists(b, "extra.subtitle")
                                         and not dict_key_exists(a, "extra.subtitle"))):
-                return (Status.STRONG, OK.CUSTOM_BSI_SUBDOC)
+                return (Status.STRONG, Reason.CUSTOM_BSI_SUBDOC)
     except PathAccessError:
         pass
 
@@ -218,15 +218,15 @@ def verify(a, b):
         if has_doi_prefix(a_doi, "10.1149") and has_doi_prefix(b_doi, "10.1149"):
             if (a_doi.startswith("10.1149/ma") and not b_doi.startswith("10.1149/ma")
                     or b_doi.startswith("10.1149/ma") and not a_doi.startswith("10.1149/ma")):
-                return (Status.DIFFERENT, Miss.CUSTOM_IOP_MA_PATTERN)
+                return (Status.DIFFERENT, Reason.CUSTOM_IOP_MA_PATTERN)
     except PathAccessError:
         pass
 
     if "Zweckverband Volkshochschule " in a_title and a_title != b_title:
-        return (Status.DIFFERENT, Miss.CUSTOM_VHS)
+        return (Status.DIFFERENT, Reason.CUSTOM_VHS)
 
     if re.match(r"appendix ?[^ ]*$", a_title_lower):
-        return (Status.AMBIGUOUS, Miss.APPENDIX)
+        return (Status.AMBIGUOUS, Reason.APPENDIX)
 
     try:
         # TODO: figshare versions, "xxx.v1"
@@ -236,7 +236,7 @@ def verify(a, b):
             a_doi_v_stripped = re.sub(r"[.]v[0-9]+$", "", glom(a, "ext_ids.doi"))
             b_doi_v_stripped = re.sub(r"[.]v[0-9]+$", "", glom(b, "ext_ids.doi"))
             if a_doi_v_stripped == b_doi_v_stripped:
-                return (Status.STRONG, OK.FIGSHARE_VERSION)
+                return (Status.STRONG, Reason.FIGSHARE_VERSION)
     except PathAccessError:
         pass
 
@@ -247,7 +247,7 @@ def verify(a, b):
         b_doi = glom(b, "ext_ids.doi")
         versioned_doi_pattern = '10[.].*/v[0-9]{1,}$'
         if re.match(versioned_doi_pattern, a_doi) and re.match(versioned_doi_pattern, b_doi):
-            return (Status.STRONG, OK.VERSIONED_DOI)
+            return (Status.STRONG, Reason.VERSIONED_DOI)
     except PathAccessError:
         pass
 
@@ -258,7 +258,7 @@ def verify(a, b):
         a_doi = glom(a, "ext_ids.doi")
         b_doi = glom(b, "ext_ids.doi")
         if a_doi.split(".")[:-1] == b_doi.split(".") or a_doi.split(".") == b_doi.split(".")[:-1]:
-            return (Status.STRONG, OK.VERSIONED_DOI)
+            return (Status.STRONG, Reason.VERSIONED_DOI)
     except PathAccessError:
         pass
 
@@ -291,7 +291,7 @@ def verify(a, b):
         b_doi_rel = get_datacite_related_doi(b)
         try:
             if glom(b, "ext_ids.doi") in a_doi_rel or glom(a, "ext_ids.doi") in b_doi_rel:
-                return (Status.STRONG, OK.DATACITE_RELATED_ID)
+                return (Status.STRONG, Reason.DATACITE_RELATED_ID)
         except PathAccessError:
             pass
 
@@ -299,7 +299,7 @@ def verify(a, b):
         id_a = re.match(r"(.*)v[0-9]{1,}$", glom(a, "ext_ids.arxiv")).group(1)
         id_b = re.match(r"(.*)v[0-9]{1,}$", glom(b, "ext_ids.arxiv")).group(1)
         if id_a == id_b:
-            return (Status.STRONG, OK.ARXIV_VERSION)
+            return (Status.STRONG, Reason.ARXIV_VERSION)
     except (AttributeError, ValueError, PathAccessError) as exc:
         pass
 
@@ -320,31 +320,31 @@ def verify(a, b):
                 "paper-conference",
             ])
             if len(types & ignore_release_types) == 0:
-                return (Status.DIFFERENT, Miss.RELEASE_TYPE)
+                return (Status.DIFFERENT, Reason.RELEASE_TYPE)
             if "dataset" in types and ("article" in types or "article-journal" in types):
-                return (Status.DIFFERENT, Miss.RELEASE_TYPE)
+                return (Status.DIFFERENT, Reason.RELEASE_TYPE)
             if "book" in types and ("article" in types or "article-journal" in types):
-                return (Status.DIFFERENT, Miss.RELEASE_TYPE)
+                return (Status.DIFFERENT, Reason.RELEASE_TYPE)
     except PathAccessError:
         pass
 
     try:
         if (glom(a, "release_type") == "dataset" and glom(b, "release_type") == "dataset"
                 and glom(a, "ext_ids.doi") != glom(b, "ext_ids.doi")):
-            return (Status.DIFFERENT, Miss.DATASET_DOI)
+            return (Status.DIFFERENT, Reason.DATASET_DOI)
     except PathAccessError:
         pass
 
     try:
         if (glom(a, "release_type") == "chapter" and glom(b, "release_type") == "chapter"
                 and glom(a, "extra.container_name") != glom(b, "extra.container_name")):
-            return (Status.DIFFERENT, Miss.BOOK_CHAPTER)
+            return (Status.DIFFERENT, Reason.BOOK_CHAPTER)
     except PathAccessError:
         pass
 
     try:
         if glom(a, "extra.crossref.type") == "component" and glom(a, "title") != glom(b, "title"):
-            return (Status.DIFFERENT, Miss.COMPONENT)
+            return (Status.DIFFERENT, Reason.COMPONENT)
     except PathAccessError:
         pass
 
@@ -353,7 +353,7 @@ def verify(a, b):
             a_doi = glom(a, "ext_ids.doi")
             b_doi = glom(b, "ext_ids.doi")
             if a_doi != b_doi:
-                return (Status.DIFFERENT, Miss.COMPONENT)
+                return (Status.DIFFERENT, Reason.COMPONENT)
     except PathAccessError:
         pass
 
@@ -367,7 +367,7 @@ def verify(a, b):
         a_year = a.get("release_year")
         b_year = b.get("release_year")
         if a_year and b_year and abs(a_year - b_year) > 40:
-            return (Status.DIFFERENT, Miss.YEAR)
+            return (Status.DIFFERENT, Reason.YEAR)
 
     if a_slug_title == b_slug_title:
         # via: https://fatcat.wiki/release/ij3yuoh6lrh3tkrv5o7gfk6yyi
@@ -376,7 +376,7 @@ def verify(a, b):
             try:
                 if (glom(a, "ext_ids.doi").split("/")[0] == "10.1109"
                         and glom(b, "ext_ids.arxiv") != ""):
-                    return (Status.STRONG, OK.CUSTOM_IEEE_ARXIV)
+                    return (Status.STRONG, Reason.CUSTOM_IEEE_ARXIV)
             except PathAccessError:
                 pass
 
@@ -396,7 +396,7 @@ def verify(a, b):
             a_doi = glom(a, "ext_ids.doi")
             b_doi = glom(b, "ext_ids.doi")
             if has_doi_prefix(a_doi, "10.7916") and has_doi_prefix(b_doi, "10.7916"):
-                return (Status.AMBIGUOUS, Miss.CUSTOM_PREFIX_10_7916)
+                return (Status.AMBIGUOUS, Reason.CUSTOM_PREFIX_10_7916)
         except PathAccessError:
             pass
 
@@ -407,7 +407,7 @@ def verify(a, b):
             for a_sub in a_subtitles:
                 for b_sub in b_subtitles:
                     if slugify_string(a_sub) != slugify_string(b_sub):
-                        return (Status.DIFFERENT, Miss.SUBTITLE)
+                        return (Status.DIFFERENT, Reason.SUBTITLE)
         except PathAccessError:
             pass
 
@@ -429,54 +429,54 @@ def verify(a, b):
             # year; compromise allow a small gap
             if a_release_year and b_release_year and abs(int(a_release_year) -
                                                          int(b_release_year)) > 1:
-                return (Status.DIFFERENT, Miss.YEAR)
-            return (Status.EXACT, OK.TITLE_AUTHOR_MATCH)
+                return (Status.DIFFERENT, Reason.YEAR)
+            return (Status.EXACT, Reason.TITLE_AUTHOR_MATCH)
 
     if (len(a.get("title", "").split()) == 1 and re.match(r".*[.][a-z]{2,3}", a.get("title", ""))
             or len(b.get("title", "").split()) == 1
             and re.match(r".*[.][a-z]{2,3}$", b.get("title", ""))):
         if a.get("title") != b.get("title"):
-            return (Status.DIFFERENT, Miss.TITLE_FILENAME)
+            return (Status.DIFFERENT, Reason.TITLE_FILENAME)
 
     if a.get("title") and a.get("title") == b.get("title"):
         if a_release_year and b_release_year:
             if abs(int(a_release_year) - int(b_release_year)) > 2:
-                return (Status.DIFFERENT, Miss.YEAR)
+                return (Status.DIFFERENT, Reason.YEAR)
 
     if contains_chemical_formula(a_slug_title) or contains_chemical_formula(b_slug_title) and (
             a_slug_title != b_slug_title):
-        return (Status.DIFFERENT, Miss.CHEM_FORMULA)
+        return (Status.DIFFERENT, Reason.CHEM_FORMULA)
 
     if len(a_slug_title) < 10 and a_slug_title != b_slug_title:
-        return (Status.AMBIGUOUS, Miss.SHORT_TITLE)
+        return (Status.AMBIGUOUS, Reason.SHORT_TITLE)
 
     if re.search(r'\d+', a_slug_title) and a_slug_title != b_slug_title and num_project(
             a_slug_title) == num_project(b_slug_title):
-        return (Status.DIFFERENT, Miss.NUM_DIFF)
+        return (Status.DIFFERENT, Reason.NUM_DIFF)
 
     if a_slug_title and b_slug_title and a_slug_title == b_slug_title:
         if a_authors and len(a_authors & b_authors) > 0:
             if arxiv_id_a is not None and arxiv_id_b is None or arxiv_id_a is None and arxiv_id_b is not None:
-                return (Status.STRONG, OK.PREPRINT_PUBLISHED)
+                return (Status.STRONG, Reason.PREPRINT_PUBLISHED)
 
     if a_slug_title and b_slug_title and a_slug_title.strip().replace(
             " ", "") == b_slug_title.strip().replace(" ", ""):
         if len(a_slug_authors & b_slug_authors) > 0:
-            return (Status.STRONG, OK.SLUG_TITLE_AUTHOR_MATCH)
+            return (Status.STRONG, Reason.SLUG_TITLE_AUTHOR_MATCH)
 
     # if any([a_authors, b_authors]) and not (a_authors and b_authors):
     # Does not cover case, where both authors are empty.
     if a_release_year == b_release_year and a_title_lower == b_title_lower:
         if ((dict_key_exists(a, "ext_ids.pmid") and dict_key_exists(b, "ext_ids.doi"))
                 or (dict_key_exists(b, "ext_ids.pmid") and dict_key_exists(a, "ext_ids.doi"))):
-            return (Status.STRONG, OK.PMID_DOI_PAIR)
+            return (Status.STRONG, Reason.PMID_DOI_PAIR)
 
     # Two JSTOR items will probably be different.
     try:
         a_jstor_id = glom(a, "ext_ids.jstor")
         b_jstor_id = glom(b, "ext_ids.jstor")
         if a_jstor_id != b_jstor_id:
-            return (Status.DIFFERENT, Miss.JSTOR_ID)
+            return (Status.DIFFERENT, Reason.JSTOR_ID)
     except PathAccessError:
         pass
 
@@ -490,7 +490,7 @@ def verify(a, b):
 
         if a_container_id == b_container_id and a_doi != b_doi and not has_doi_prefix(
                 a_doi, "10.1126"):
-            return (Status.DIFFERENT, Miss.SHARED_DOI_PREFIX)
+            return (Status.DIFFERENT, Reason.SHARED_DOI_PREFIX)
     except PathAccessError:
         pass
 
@@ -515,7 +515,7 @@ def verify(a, b):
         if len(top_scores) > 0:
             avg_score = sum(top_scores) / len(top_scores)
             if avg_score > 0.5:
-                return (Status.STRONG, OK.TOKENIZED_AUTHORS)
+                return (Status.STRONG, Reason.TOKENIZED_AUTHORS)
             else:
                 pass
                 # Kuidong Xu, Joong Ki Choi, Eun Jin Yang, Kyu Chul Lee, Yanli Lei
@@ -530,19 +530,19 @@ def verify(a, b):
         a_tok = [tok for tok in re.findall(r"[\w]{3,}", " ".join(a_slug_authors)) if tok]
         b_tok = [tok for tok in re.findall(r"[\w]{3,}", " ".join(b_slug_authors)) if tok]
         if jaccard(set(a_tok), set(b_tok)) > 0.35:
-            return (Status.STRONG, OK.JACCARD_AUTHORS)
+            return (Status.STRONG, Reason.JACCARD_AUTHORS)
 
         # TODO: This misses spelling differences, e.g.
         # https://fatcat.wiki/release/7nbcgsohrrak5cuyk6dnit6ega and
         # https://fatcat.wiki/release/q66xv7drk5fnph7enwwlkyuwqm
-        return (Status.DIFFERENT, Miss.CONTRIB_INTERSECTION_EMPTY)
+        return (Status.DIFFERENT, Reason.CONTRIB_INTERSECTION_EMPTY)
 
     # mark choicereview articles as ambiguous, as they seem to be behind a paywall
     try:
         a_doi = glom(a, "ext_ids.doi")
         b_doi = glom(b, "ext_ids.doi")
         if has_doi_prefix(a_doi, "10.5860") or has_doi_prefix(b_doi, "10.5860"):
-            return (Status.AMBIGUOUS, Miss.CUSTOM_PREFIX_10_5860_CHOICE_REVIEW)
+            return (Status.AMBIGUOUS, Reason.CUSTOM_PREFIX_10_5860_CHOICE_REVIEW)
     except PathAccessError:
         pass
 
@@ -562,8 +562,8 @@ def verify(a, b):
             b_num_pages = int(b_end) - int(b_start)
             if a_num_pages >= 0 and b_num_pages >= 0:
                 if abs(a_num_pages - b_num_pages) > 5:
-                    return (Status.DIFFERENT, Miss.PAGE_COUNT)
+                    return (Status.DIFFERENT, Reason.PAGE_COUNT)
     except PathAccessError:
         pass
 
-    return (Status.AMBIGUOUS, OK.DUMMY)
+    return (Status.AMBIGUOUS, Reason.DUMMY)