def test_autoregressive_sample_reformerlm(self):
lsh_self_attention = self._lsh_self_attention_fn()
timebin_self_attention = self._timebin_self_attention_fn()
model = models.ReformerLM(
vocab_size=256,
d_model=256,
d_ff=512,
d_attention_key=128,
d_attention_value=128,
n_layers=2,
n_heads=2,
dropout=0.05,
max_len=65536,
attention_type=[timebin_self_attention, lsh_self_attention],
pos_axial_shape=(256, 256),
pos_d_axial_embs=(128, 128),
ff_activation=tl.Relu,
ff_use_sru=0,
mode='predict',
)
model.init(shapes.ShapeDtype((1, 1), dtype=np.int32))
s1 = decoding.autoregressive_sample(model,
batch_size=1,
eos_id=-1,
max_length=10)
self.assertEqual(s1.shape[0], 1)
self.assertEqual(s1.shape[1], 10)
def test_autoregressive_sample_reformerlm_quality(self):
timebin_self_attention = self._timebin_self_attention_fn()
pred_model = models.ReformerLM(
d_model=64, d_ff=128, dropout=0.05, max_len=256, n_heads=2,
attention_type=timebin_self_attention,
n_layers=2, vocab_size=13, mode='predict')
shape11 = shapes.ShapeDtype((1, 1), dtype=np.int32)
model_path = os.path.join(_TESTDATA, 'reformerlm_copy.pkl.gz')
pred_model.init_from_file(model_path, weights_only=True,
input_signature=(shape11, shape11))
inputs = np.array([[0, 3, 7, 5, 3, 2, 4, 0]], dtype=np.int32)
s = decoding.autoregressive_sample(pred_model, inputs,
max_length=6, temperature=0.0)
self.assertEqual(str(s[0]), '[3 7 5 3 2 4]')
def test_autoregressive_sample_reformerlm_lsh_quality(self):
# After changes to some fastmath.custom_vjp functions (made so that we could
# land JAX PR #4008), this test started failing, with an assertion error on
# efficient_attention.py:1382 (q_len == 1).
# TODO(mattjj,lukaszkaiser): revive this test after landing #4008
raise unittest.SkipTest('temporarily skipping test so that we can '
'land https://github.com/google/jax/pull/4008')
# pylint: disable=unreachable
max_len = 32
pred_model = models.ReformerLM(
mode='predict',
d_model=256,
d_ff=512,
dropout=0.05,
max_len=2 * max_len,
n_heads=4,
n_layers=3,
ff_use_sru=0,
d_attention_key=64,
d_attention_value=64,
attention_type=functools.partial(tl.LSHSelfAttention,
chunk_len=16,
n_hashes=2,
n_buckets=[32, 32],
predict_drop_len=max_len,
predict_mem_len=max_len,
max_length_for_buckets=1024),
vocab_size=13,
axial_pos_shape='fixed-base',
d_axial_pos_embs=None,
)
shape11 = shapes.ShapeDtype((1, 1), dtype=np.int32)
model_path = os.path.join(_TESTDATA, 'reformerlm_copy_lsh_attn.pkl.gz')
pred_model.init_from_file(model_path,
weights_only=True,
input_signature=shape11)
# 0w0
inputs = np.array([[0, 3, 7, 5, 3, 2, 0]], dtype=np.int32)
inp_len = inputs.shape[1]
s = decoding.autoregressive_sample(pred_model,
inputs=inputs,
eos_id=-1,
max_length=inp_len - 2,
temperature=0.0)
np.testing.assert_equal(s[0], inputs[0, 1:inp_len - 1])
def test_autoregressive_sample_reformerlm_lsh_quality(self):
max_len = 32
pred_model = models.ReformerLM(
mode='predict',
d_model=256,
d_ff=512,
dropout=0.05,
max_len=2 * max_len,
n_heads=4,
n_layers=3,
ff_use_sru=0,
d_attention_key=64,
d_attention_value=64,
attention_type=functools.partial(tl.LSHSelfAttention,
chunk_len=16,
n_hashes=2,
n_buckets=[32, 32],
predict_drop_len=max_len,
predict_mem_len=max_len,
max_length_for_buckets=1024),
vocab_size=13,
pos_type='fixed-base',
pos_d_axial_embs=None,
)
shape11 = shapes.ShapeDtype((1, 1), dtype=np.int32)
model_path = os.path.join(_TESTDATA, 'reformerlm_copy_lsh_attn.pkl.gz')
pred_model.init_from_file(model_path,
weights_only=True,
input_signature=shape11)
# 0w0
inputs = np.array([[0, 3, 7, 5, 3, 2, 0]], dtype=np.int32)
inp_len = inputs.shape[1]
s = decoding.autoregressive_sample(pred_model,
inputs=inputs,
eos_id=-1,
max_length=inp_len - 2,
temperature=0.0)
np.testing.assert_equal(s[0], inputs[0, 1:inp_len - 1])
def test_autoregressive_sample_reformerlm_lsh(self):
max_len = 32
pred_model = models.ReformerLM(
mode='predict',
d_model=256,
d_ff=512,
dropout=0.05,
max_len=2 * max_len,
n_heads=4,
n_layers=3,
ff_use_sru=0,
d_attention_key=64,
d_attention_value=64,
attention_type=functools.partial(tl.LSHSelfAttention,
chunk_len=16,
n_hashes=2,
n_buckets=[32, 32],
predict_drop_len=max_len,
predict_mem_len=max_len,
max_length_for_buckets=1024),
vocab_size=13,
pos_type='fixed-base',
pos_d_axial_embs=None,
)
shape11 = shapes.ShapeDtype((1, 1), dtype=np.int32)
pred_model.init(shape11)
# 0w0
inputs = np.array([[0, 3, 7, 5, 3, 2, 0]], dtype=np.int32)
inputs = np.pad(inputs, [(0, 0), (0, max_len - inputs.shape[1])],
mode='constant',
constant_values=0)
s = decoding.autoregressive_sample(pred_model,
inputs=inputs,
eos_id=-1,
max_length=10,
temperature=0.0)
self.assertEqual(s.shape[0], 1)
self.assertEqual(s.shape[1], 10)
