Change default generate behavior from fixed seed to random seed

README.md

@@ -195,6 +195,11 @@ from pydantic import BaseModel, constr
 import outlines.models as models
 import outlines.text.generate as generate
 
+import torch
+rng = torch.Generator()
+# optional: use this seed to get the same results
+rng.manual_seed(67280421310721)
+
 
 class Weapon(str, Enum):
     sword = "sword"
@@ -220,7 +225,7 @@ class Character(BaseModel):
 
 
 model = models.transformers("gpt2")
-sequence = generate.json(model, Character)("Give me a character description")
+sequence = generate.json(model, Character)("Give me a character description", rng=rng) # rng is optional
 print(sequence)
 # {
 #   "name": "ranbelt",

outlines/text/generate/sequence.py

@@ -199,6 +199,7 @@ def __call__(
 
         if rng is None:
             rng = torch.Generator(device=self.device)
+            rng.seed()
 
         num_prompt_tokens = token_ids.shape[-1]