Replace cudf.logical_not with ~ (#4669)

Replace `cudf.logical_not` with `~`.

Authors:
  - Andy Adinets (https://github.com/canonizer)

Approvers:
  - Bradley Dice (https://github.com/bdice)
  - Dante Gama Dessavre (https://github.com/dantegd)

URL: #4669

python/cuml/preprocessing/text/stem/porter_stemmer.py

@@ -173,9 +173,7 @@ def _step1a(self, word_str_ser, can_replace_mask=None):
             )
 
             # update can replace mask
-            can_replace_mask = can_replace_mask & cudf.logical_not(
-                condition_mask
-            )
+            can_replace_mask &= ~condition_mask
 
         return apply_rule_list(
             word_str_ser,
@@ -241,18 +239,14 @@ def _step1b(self, word_str_ser, can_replace_mask=None):
             )
 
             # update can replace mask
-            can_replace_mask = can_replace_mask & cudf.logical_not(
-                condition_mask
-            )
+            can_replace_mask &= ~condition_mask
 
             condition_mask = suffix_mask
             valid_mask = can_replace_mask & condition_mask
             word_str_ser = replace_suffix(word_str_ser, "ied", "i", valid_mask)
 
             # update can replace mask
-            can_replace_mask = can_replace_mask & cudf.logical_not(
-                condition_mask
-            )
+            can_replace_mask &= ~condition_mask
 
         # (m>0) EED -> EE
         # if suffix ==eed we stop processing
@@ -269,7 +263,7 @@ def _step1b(self, word_str_ser, can_replace_mask=None):
 
         # to be consistent with nltk we dont replace
         # if word.endswith('eed') we stop proceesing
-        can_replace_mask = can_replace_mask & cudf.logical_not(suffix_mask)
+        can_replace_mask &= ~suffix_mask
 
         # rule 2
         #    (*v*) ED  ->   plastered ->  plaster
@@ -652,7 +646,7 @@ def _step5a(self, word_str_ser, can_replace_mask=None):
 
         # if measure==1 and not self._ends_cvc(stem):
         measure_eq_1_flag = measure_eq_n(stem, 1)
-        does_not_ends_with_cvc_flag = cudf.logical_not(ends_cvc(stem))
+        does_not_ends_with_cvc_flag = ~ends_cvc(stem)
         rule_2_flag = measure_eq_1_flag & does_not_ends_with_cvc_flag
 
         overall_rule_flag = (
@@ -718,7 +712,7 @@ def map_irregular_forms(word_str_ser, can_replace_mask):
             )
 
             word_str_ser = stem_ser.str.cat(replacement_ser)
-            can_replace_mask = can_replace_mask & cudf.logical_not(equal_flag)
+            can_replace_mask &= ~equal_flag
 
     return word_str_ser, can_replace_mask
 
@@ -761,7 +755,7 @@ def apply_rule(word_str_ser, rule, w_in_c_flag):
         word_str_ser = replace_suffix(
             word_str_ser, suffix, replacement, valid_mask
         )
-        w_in_c_flag = w_in_c_flag & cudf.logical_not(double_consonant_mask)
+        w_in_c_flag &= ~double_consonant_mask
 
     else:
 
@@ -778,7 +772,7 @@ def apply_rule(word_str_ser, rule, w_in_c_flag):
         )
 
         # we wont apply further rules if it has a matching suffix
-        w_in_c_flag = w_in_c_flag & cudf.logical_not(suffix_mask)
+        w_in_c_flag &= ~suffix_mask
 
     return word_str_ser, w_in_c_flag
 

python/cuml/preprocessing/text/stem/porter_stemmer_utils/porter_stemmer_rules.py

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2020, NVIDIA CORPORATION.
+# Copyright (c) 2020-2022, NVIDIA CORPORATION.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -100,7 +100,7 @@ def ends_cvc(string_ser, mode="NLTK_EXTENSIONS"):
         # and not self._is_consonant(word, 0)
         # and self._is_consonant(word, 1)
         len_flag = len_eq_n(string_ser, 2)
-        first_char = cudf.logical_not(is_consonant(string_ser, 0))
+        first_char = ~is_consonant(string_ser, 0)
         second_char = is_consonant(string_ser, 1)
         rule_2 = len_flag & first_char & second_char