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train.py

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+from datasets import load_dataset
+from span_marker import SpanMarkerModel, Trainer
+from transformers import TrainingArguments
+
+
+def main() -> None:
+    # Load the dataset, ensure "tokens" and "ner_tags" columns, and get a list of labels
+    dataset = load_dataset("tner/ontonotes5")
+    dataset = dataset.rename_column("tags", "ner_tags")
+    labels = ['O', 'B-CARDINAL', 'B-DATE', 'I-DATE', 'B-PERSON', 'I-PERSON', 'B-NORP', 'B-GPE', 'I-GPE', 'B-LAW', 'I-LAW', 'B-ORG', 'I-ORG', 'B-PERCENT', 'I-PERCENT', 'B-ORDINAL', 'B-MONEY', 'I-MONEY', 'B-WORK_OF_ART', 'I-WORK_OF_ART', 'B-FAC', 'B-TIME', 'I-CARDINAL', 'B-LOC', 'B-QUANTITY', 'I-QUANTITY', 'I-NORP', 'I-LOC', 'B-PRODUCT', 'I-TIME', 'B-EVENT', 'I-EVENT', 'I-FAC', 'B-LANGUAGE', 'I-PRODUCT', 'I-ORDINAL', 'I-LANGUAGE']
+
+    # Initialize a SpanMarker model using a pretrained BERT-style encoder
+    model_name = "roberta-large"
+    model = SpanMarkerModel.from_pretrained(
+        model_name,
+        labels=labels,
+        # SpanMarker hyperparameters:
+        model_max_length=256,
+        marker_max_length=128,
+        entity_max_length=10,
+    )
+
+    # Prepare the 🤗 transformers training arguments
+    args = TrainingArguments(
+        output_dir="models/span_marker_roberta_large_ontonotes5",
+        # Training Hyperparameters:
+        learning_rate=1e-5,
+        per_device_train_batch_size=8,
+        per_device_eval_batch_size=8,
+        gradient_accumulation_steps=2,
+        num_train_epochs=4,
+        weight_decay=0.01,
+        warmup_ratio=0.1,
+        bf16=True,
+        # Other Training parameters
+        logging_first_step=True,
+        logging_steps=50,
+        evaluation_strategy="steps",
+        save_strategy="steps",
+        eval_steps=1000,
+        dataloader_num_workers=2,
+    )
+
+    # Initialize the trainer using our model, training args & dataset, and train
+    trainer = Trainer(
+        model=model,
+        args=args,
+        train_dataset=dataset["train"],
+        eval_dataset=dataset["validation"],
+    )
+    trainer.train()
+    trainer.save_model("models/span_marker_roberta_large_ontonotes5/checkpoint-final")
+
+    # Compute & save the metrics on the test set
+    metrics = trainer.evaluate(dataset["test"], metric_key_prefix="test")
+    trainer.save_metrics("test", metrics)
+
+
+if __name__ == "__main__":
+    main()