Scitail (#943)

* scitail

* Scitail

* Scitail

* update Scitail, removed config

* update Scitail, removed config

Author: phu-pmh

jiant/tasks/tasks.py

@@ -3241,3 +3241,47 @@ def get_metrics(self, reset=False):
         """Get metrics specific to the task"""
         acc = self.scorer1.get_metric(reset)
         return {"accuracy": acc}
+
+
+@register_task("scitail", rel_path="SciTailV1.1/tsv_format/")
+class SciTailTask(PairClassificationTask):
+    """ Task class for SciTail http://data.allenai.org/scitail/ """
+
+    def __init__(self, path, max_seq_len, name, **kw):
+        super().__init__(name, n_classes=2, **kw)
+        self.path = path
+        self.max_seq_len = max_seq_len
+
+        self.train_data_text = None
+        self.val_data_text = None
+        self.test_data_text = None
+
+    def load_data(self):
+        """Process and load Scitail data"""
+        targ_map = {"neutral": 0, "entails": 1}
+        self.train_data_text = load_tsv(
+            self._tokenizer_name,
+            os.path.join(self.path, "scitail_1.0_train.tsv"),
+            max_seq_len=self.max_seq_len,
+            label_fn=targ_map.__getitem__,
+        )
+        self.val_data_text = load_tsv(
+            self._tokenizer_name,
+            os.path.join(self.path, "scitail_1.0_dev.tsv"),
+            max_seq_len=self.max_seq_len,
+            label_fn=targ_map.__getitem__,
+        )
+        self.test_data_text = load_tsv(
+            self._tokenizer_name,
+            os.path.join(self.path, "scitail_1.0_test.tsv"),
+            max_seq_len=self.max_seq_len,
+            label_fn=targ_map.__getitem__,
+            return_indices=True,
+        )
+        self.sentences = (
+            self.train_data_text[0]
+            + self.train_data_text[1]
+            + self.val_data_text[0]
+            + self.val_data_text[1]
+        )
+        log.info("\tFinished loading SciTail")