Fixed #136. Providing get_no_label_instance at BaseLabelScaler class.

common/labels/scaler.py

@@ -1,6 +1,6 @@
 from collections import OrderedDict
 
-from arekit.common.labels.base import Label
+from arekit.common.labels.base import Label, NoLabel
 
 
 class BaseLabelScaler(object):
@@ -16,6 +16,7 @@ def __init__(self, uint_dict, int_dict):
         self.__int_dict = int_dict
 
         self.__ordered_labels = list(uint_dict.iterkeys())
+        self.__no_label_instance = self.__find_no_label_instance(uint_dict.iterkeys())
 
     @property
     def LabelsCount(self):
@@ -24,8 +25,21 @@ def LabelsCount(self):
     def ordered_suppoted_labels(self):
         return self.__ordered_labels
 
+    def get_no_label_instance(self):
+        if self.__no_label_instance is None:
+            raise Exception("NoLabel does no supported by this scaler")
+
+        return self.__no_label_instance
+
     # region private methods
 
+    @staticmethod
+    def __find_no_label_instance(iter_labels):
+        for label in iter_labels:
+            if isinstance(label, NoLabel):
+                return label
+        return None
+
     @staticmethod
     def __ltoi(label, d):
         assert(isinstance(label, Label))

contrib/experiment_rusentrel/annot/two_scale.py

@@ -1,11 +1,11 @@
 import logging
 
 from arekit.common.experiment.annot.base import BaseAnnotator
-from arekit.common.labels.base import NoLabel
 from arekit.common.news.parsed.base import ParsedNews
 from arekit.common.opinions.base import Opinion
 from arekit.common.opinions.collection import OpinionCollection
 from arekit.common.experiment.data_type import DataType
+from arekit.contrib.experiment_rusentrel.labels.types import ExperimentNeutralLabel
 
 logger = logging.getLogger(__name__)
 
@@ -38,7 +38,7 @@ def _annot_collection_core(self, parsed_news, data_type, doc_ops, opin_ops):
         for opinion in opin_ops.read_etalon_opinion_collection(doc_id):
             neut_collection.add_opinion(Opinion(source_value=opinion.SourceValue,
                                                 target_value=opinion.TargetValue,
-                                                sentiment=NoLabel()))
+                                                sentiment=ExperimentNeutralLabel()))
 
         return neut_collection
 

contrib/experiment_rusentrel/labels/formatters/sentiment_rus.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
-from arekit.common.labels.base import NoLabel
 from arekit.common.labels.str_fmt import StringLabelsFormatter
-from arekit.contrib.experiment_rusentrel.labels.types import ExperimentNegativeLabel, ExperimentPositiveLabel
+from arekit.contrib.experiment_rusentrel.labels.types import ExperimentNegativeLabel, ExperimentPositiveLabel, \
+    ExperimentNeutralLabel
 
 
 class RussianThreeScaleRussianLabelsFormatter(StringLabelsFormatter):
@@ -14,6 +14,6 @@ def __init__(self):
 
         stol = {u'негативно': ExperimentNegativeLabel(),
                 u'позитивно': ExperimentPositiveLabel(),
-                u'нейтрально': NoLabel()}
+                u'нейтрально': ExperimentNeutralLabel()}
 
         super(RussianThreeScaleRussianLabelsFormatter, self).__init__(stol=stol)

contrib/experiment_rusentrel/labels/scalers/three.py

@@ -1,19 +1,19 @@
 from collections import OrderedDict
 
-from arekit.common.labels.base import NoLabel
 from arekit.common.labels.scaler import BaseLabelScaler
-from arekit.contrib.experiment_rusentrel.labels.types import ExperimentNegativeLabel, ExperimentPositiveLabel
+from arekit.contrib.experiment_rusentrel.labels.types import ExperimentNegativeLabel, ExperimentPositiveLabel, \
+    ExperimentNeutralLabel
 
 
 class ThreeLabelScaler(BaseLabelScaler):
 
     def __init__(self):
 
-        uint_labels = [(NoLabel(), 0),
+        uint_labels = [(ExperimentNeutralLabel(), 0),
                        (ExperimentPositiveLabel(), 1),
                        (ExperimentNegativeLabel(), 2)]
 
-        int_labels = [(NoLabel(), 0),
+        int_labels = [(ExperimentNeutralLabel(), 0),
                       (ExperimentPositiveLabel(), 1),
                       (ExperimentNegativeLabel(), -1)]
 

contrib/experiment_rusentrel/labels/types.py

@@ -2,6 +2,8 @@
 
 
 class ExperimentNeutralLabel(NoLabel):
+    """ RuSentRel Experiment Neutral Label.
+    """
     pass
 
 

contrib/networks/features/term_frame_roles.py

@@ -52,7 +52,7 @@ def __extract_uint_frame_variant_sentiment_role(text_frame_variant, frames_colle
         polarity = frames_collection.try_get_frame_sentiment_polarity(frame_id)
 
         if polarity is None:
-            return three_label_scaler.label_to_uint(label=NoLabel())
+            return three_label_scaler.label_to_uint(label=three_label_scaler.get_no_label_instance())
 
         assert(isinstance(polarity, FramePolarity))
 

tests/contrib/bert/labels.py

@@ -4,6 +4,10 @@
 from arekit.common.labels.scaler import BaseLabelScaler
 
 
+class TestNeutralLabel(NoLabel):
+    pass
+
+
 class TestPositiveLabel(Label):
     pass
 
@@ -16,11 +20,11 @@ class TestThreeLabelScaler(BaseLabelScaler):
 
     def __init__(self):
 
-        uint_labels = [(NoLabel(), 0),
+        uint_labels = [(TestNeutralLabel(), 0),
                        (TestPositiveLabel(), 1),
                        (TestNegativeLabel(), 2)]
 
-        int_labels = [(NoLabel(), 0),
+        int_labels = [(TestNeutralLabel(), 0),
                       (TestPositiveLabel(), 1),
                       (TestNegativeLabel(), -1)]
 

tests/contrib/networks/labels.py

@@ -4,6 +4,10 @@
 from arekit.common.labels.scaler import BaseLabelScaler
 
 
+class TestNeutralLabel(NoLabel):
+    pass
+
+
 class TestPositiveLabel(Label):
     pass
 
@@ -16,11 +20,11 @@ class TestThreeLabelScaler(BaseLabelScaler):
 
     def __init__(self):
 
-        uint_labels = [(NoLabel(), 0),
+        uint_labels = [(TestNeutralLabel(), 0),
                        (TestPositiveLabel(), 1),
                        (TestNegativeLabel(), 2)]
 
-        int_labels = [(NoLabel(), 0),
+        int_labels = [(TestNeutralLabel(), 0),
                       (TestPositiveLabel(), 1),
                       (TestNegativeLabel(), -1)]
 

tests/contrib/networks/test_tf_mi_feed.py

@@ -5,7 +5,6 @@
 
 sys.path.append('../../../')
 
-from arekit.common.labels.base import NoLabel
 from arekit.common.labels.scaler import BaseLabelScaler
 
 from arekit.contrib.networks.core.feeding.bags.bag import Bag
@@ -16,6 +15,7 @@
 from arekit.contrib.networks.sample import InputSample
 from arekit.contrib.networks.multi.architectures.max_pooling import MaxPoolingOverSentences
 
+from arekit.tests.contrib.networks.labels import TestNeutralLabel
 from arekit.tests.contrib.networks.test_tf_ctx_feed import TestContextNetworkFeeding
 from arekit.tests.contrib.networks.tf_networks.supported import get_supported
 
@@ -27,7 +27,7 @@ def __create_minibatch(config, labels_scaler):
         assert(isinstance(config, DefaultNetworkConfig))
         assert(isinstance(labels_scaler, BaseLabelScaler))
         bags = []
-        label = NoLabel()
+        label = TestNeutralLabel()
         empty_sample = InputSample.create_empty(terms_per_context=config.TermsPerContext,
                                                 frames_per_context=config.FramesPerContext,
                                                 synonyms_per_context=config.SynonymsPerContext)