Adding more cmd line args

olmocr/train/grpo_train.py

@@ -405,6 +405,38 @@ def main():
         default=None,
         help="Weights & Biases run name (default: auto-generated)"
     )
+    parser.add_argument(
+        "--loss_type",
+        type=str,
+        default="bnpo",
+        choices=["bnpo", "grpo", "exo"],
+        help="Loss formulation to use (default: bnpo)"
+    )
+    parser.add_argument(
+        "--scale_rewards",
+        action="store_true",
+        default=True,
+        help="Whether to scale rewards by their standard deviation (default: True)"
+    )
+    parser.add_argument(
+        "--no_scale_rewards",
+        action="store_false",
+        dest="scale_rewards",
+        help="Disable reward scaling"
+    )
+    parser.add_argument(
+        "--beta",
+        type=float,
+        default=0.0,
+        help="KL coefficient for reference model (default: 0.0, no reference model)"
+    )
+    parser.add_argument(
+        "--importance_sampling_level",
+        type=str,
+        default="token",
+        choices=["token", "sequence"],
+        help="Level for importance sampling ratios (default: token)"
+    )
     
     args = parser.parse_args()
     
@@ -503,6 +535,12 @@ def main():
         bf16=True,
         dataloader_num_workers=0,
         
+        # GRPO-specific parameters
+        loss_type=args.loss_type,
+        scale_rewards=args.scale_rewards,
+        beta=args.beta,
+        importance_sampling_level=args.importance_sampling_level,
+
         # Vllm setup to speed up generation
         use_vllm=True,
         vllm_mode="colocate",