Update ace.py

ace.py

@@ -19,6 +19,7 @@ import json
 import os
 
 import datasets
+import numpy as np
 
 
 _CITATION = """\
@@ -49,6 +50,7 @@ class MockupDataset(datasets.GeneratorBasedBuilder):
             data_config['size'] = 100
 
         self.data_config = data_config
+        self.sampler = AutomatonSampler(name, data_config)
 
     def _info(self):
         features = datasets.Features(
@@ -79,8 +81,27 @@ class MockupDataset(datasets.GeneratorBasedBuilder):
     # method parameters are unpacked from `gen_kwargs` as given in `_split_generators`
     def _generate_examples(self, split):
         for i in range(self.data_config['size']):
-            print('generator iter', i)
+            x, y = self.sampler.sample()
             yield i, {
-                "x": [0]*self.data_config['length'],
-                "y": [1]*self.data_config['length']
-            }
+                "x": x,
+                "y": y
+            }
+
+class AutomatonSampler:
+    def __init__(self, name, data_config):
+        self.name = name
+        self.data_config = data_config
+
+        if 'seed' in self.data_config:
+            self.np_rng = np.random.default_rng(self.data_config['seed'])
+        else:
+            self.np_rng = np.random.default_rng()
+
+        self.T = self.data_config['length']
+
+    def f(self, x):
+        return np.cumsum(x) % 2
+
+    def sample(self):
+        x = self.np_rng.binomial(1,0.5,size=self.T)
+        return x, self.f(x)