def __init__(self,
actions_num,
img_shape,
misc_len=0,
conv_filters_num=(32, 64, 64),
conv_filters_sizes=(8, 4, 3),
conv_strides=(4, 2, 1),
activation_fn="tf.nn.relu",
fc_units_num=256,
**ignored):
self.actions_num = actions_num
self.conv_filters_num = conv_filters_num
self.conv_filters_sizes = conv_filters_sizes
self.conv_strides = conv_strides
self.activation_fn = eval(activation_fn)
self.fc_units_num = fc_units_num
self.ops = Record()
self.vars = Record()
self.use_misc = misc_len > 0
self.params = None
self.vars.state_img = tf.placeholder(tf.float32, [None] + list(img_shape), name="state_img")
if self.use_misc:
self.vars.state_misc = tf.placeholder(tf.float32, [None, misc_len], name="state_misc")
else:
self.vars.state_misc = None
class RevisionStore(Record("fs", "root")):
def __contains__(self, entry):
full_path = self.get_full_revision_path(entry)
return self.fs.stat_eq(full_path, entry.size, entry.mtime)
def move_in(self, source_path, dest_entry):
dest_path = self.get_full_revision_path(dest_entry)
self.fs.move(source_path, dest_path, mtime=dest_entry.mtime)
def copy_out(self, source_entry, dest_path):
source_path = self.get_full_revision_path(source_entry)
self.fs.copy(source_path, dest_path, mtime=source_entry.mtime)
def get_full_revision_path(self, entry):
return join_paths(self.root, self.get_revision_path(entry))
# TODO: Use the entry.groupid in the revision_path. Right now,
# all of the groups are kind of merged together, which is kind of
# messy.
def get_revision_path(self, entry):
path, ext = os.path.splitext(entry.path)
if entry.hash:
return "{path}_{hash}{ext}".format(path=path,
hash=entry.hash,
ext=ext)
else:
return "{path}_{size}_{mtime}{ext}".format(path=path,
size=entry.size,
mtime=entry.mtime,
ext=ext)
class HistoryStore(Record("db", "slog", "cache_by_peerid")):
def __new__(cls, db, slog):
db.create(TABLE_NAME, TABLE_FIELD_TYPES)
return cls.new(db, slog, {})
# return [entry]
def read_entries(self, peerid):
cached = setdefault(self.cache_by_peerid, peerid, lambda: \
HistoryCache(list(self.select_entries(peerid))))
# copy list for thread safety
return list(cached.entries)
# Reads 100,000/sec on my 2008 Macbook. If you sort by utime, it goes
# down to 40,000/sec, so that doesn't seem like a good idea.
def select_entries(self, peerid):
# TODO: use a where clause when selecting by peerid. It will
# be a lot faster!
return (entry for entry in self.db.select(
TABLE_NAME, TABLE_FIELDS, into=HistoryEntry)
if entry.peerid == peerid)
def add_entries(self, new_entries):
self.db.insert(TABLE_NAME, TABLE_FIELDS, new_entries)
self.slog.inserted_history(new_entries)
for peerid, new_entries in \
group_history_by_peerid(new_entries).iteritems():
cache = self.cache_by_peerid.get(peerid)
if cache is not None:
cache.add_entries(new_entries)
class FileStat(Record("rpath", "size", "mtime")):
@classmethod
def from_deleted(cls, rpath):
return cls.new(rpath, DELETED_SIZE, DELETED_MTIME)
@property
def deleted(entry):
return entry.mtime == DELETED_MTIME
class RootedPath(Record("root", "rel")):
""" Represents a path (rel) that is relative to another path
(root). For examples, when scanning a large directory, it is
convenient to know the paths relative to the directory passed in.
In code a RootedPath is often called an "rpath"."""
@property
def full(self):
return join_paths(*self)
class UnixPathEncoder(Record("encoding", "decoding")):
def encode_path(self, path):
if self.encoding:
return path.encode(self.encoding)
else:
return path
def decode_path(self, path):
return path.decode(self.decoding)
class History(Record("entries", "latest")):
def __new__(cls, entries):
# Using max(entries) is faster than
# max(history, key=HistoryEntry.get_utime)
# by .2 secs for 150,000 entries.
latest = max(entries)
return cls.new(entries, latest)
def __iter__(self):
return iter(self.entries)
class Groupids(Record("root_by_groupid", "groupid_by_root")):
def __new__(cls, root_by_groupid):
groupid_by_root = flip_dict(root_by_groupid)
return cls.new(root_by_groupid, groupid_by_root)
def to_root(self, groupid):
return self.root_by_groupid.get(groupid, None)
def from_root(self, root):
return self.groupid_by_root.get(root, None)
class WindowsPathEncoder(Record("encoding", "decoding")):
def encode_path(self, path):
win_path = "\\\\?\\" + os.path.abspath(path.replace(PATH_SEP, os.sep))
if self.encoding:
return win_path.encode(self.encoding)
else:
return win_path
def decode_path(self, win_path):
return win_path.replace(os.sep, PATH_SEP).decode(self.decoding)
class HistoryEntry(Record(*TABLE_FIELDS)):
@property
def deleted(entry):
return entry.mtime == DELETED_MTIME
def get_gpath(entry):
return GroupedPath(entry.groupid, entry.path)
@property
def gpath(entry):
return GroupedPath(entry.groupid, entry.path)
class MergeLog(Record("db", "clock")):
def __new__(cls, db, clock):
db.create(TABLE_NAME, TABLE_FIELD_TYPES)
return cls.new(db, clock)
def read_actions(self):
return list(
self.db.select(TABLE_NAME, TABLE_FIELDS, into=MergeLogEntry))
def add_action(self, action):
utime = self.clock.unix()
peerid = action.newer.peerid
action_type = str(action.type)
(groupid, path) = action.gpath
details = str(action.details) if action.details else ""
author_peerid = action.newer.author_peerid
entry = MergeLogEntry(utime, peerid, action_type, groupid, path,
details, author_peerid)
self.db.insert(TABLE_NAME, TABLE_FIELDS, [entry])
class PathFilter(
Record("patterns_to_ignore", "names_to_ignore", "paths_to_ignore")):
"""Controls whether to ingore a path or not, which is mostly used
for scanning and comparing files. ignore_path will be called a
lot, and should memoize. Also, names_to_ignore is used directly
as a set in FileSystem scans. For convenience, globs_to_ignore
are converted to regular expressions to ignore."""
def __new__(cls, globs_to_ignore, names_to_ignore):
names_to_ignore = frozenset(names_to_ignore)
patterns_to_ignore = compile_globs(globs_to_ignore)
return cls.new(patterns_to_ignore, names_to_ignore, set())
def ignore_path(self, path):
if path in self.paths_to_ignore:
return True
elif (matches_any_name(path, self.names_to_ignore)
or matches_any_pattern(path, self.patterns_to_ignore)):
self.paths_to_ignore.add(path)
return True
else:
return False
def train(net_enn, input_, target, feature_name=''):
dstb_y = lamuda.Lamuda(target, NE, ERROR_PER)
train_losses = Record()
losses = Record()
lamuda_history = Record()
std_history = Record()
pred_history = Record()
initial_parameters = net_enn.initial_parameters
initial_pred = net_enn.output(input_)
train_losses.update(criterion(initial_pred.mean(0), target).tolist())
losses.update(criterion(initial_pred.mean(0), target).tolist())
std_history.update(dstb_y.std(initial_pred))
pred_history.update(initial_pred)
lamuda_history.update(dstb_y.lamuda(initial_pred))
for j in range(T):
torch.cuda.empty_cache()
params = net_enn.get_parameter()
dstb_y.update()
time_ = time.strftime('%Y%m%d_%H_%M_%S')
delta = enrml.EnRML(pred_history.get_latest(mean=False), params,
initial_parameters,
lamuda_history.get_latest(mean=False), dstb_y.dstb,
ERROR_PER)
params_raw = net_enn.update_parameter(delta)
torch.cuda.empty_cache()
pred = net_enn.output(input_)
loss_new = criterion(pred.mean(0), target).tolist()
bigger = train_losses.check(loss_new)
record_while = 0
while bigger:
record_while += 1
lamuda_history.update(
lamuda_history.get_latest(mean=False) * GAMMA)
if lamuda_history.get_latest(mean=False) > GAMMA**10:
lamuda_history.update(lamuda_history.data[0])
print('abandon current iteration')
net_enn.set_parameter(params)
loss_new = train_losses.get_latest()
dstb_y.update()
params_raw = params
break
dstb_y.update()
net_enn.set_parameter(params)
delta = enrml.EnRML(pred_history.get_latest(mean=False), params,
initial_parameters,
lamuda_history.get_latest(mean=False),
dstb_y.dstb, ERROR_PER)
params_raw = net_enn.update_parameter(delta)
torch.cuda.empty_cache()
pred = net_enn.output(input_)
loss_new = criterion(pred.mean(0), target).tolist()
print('update losses, new loss:{}'.format(loss_new))
bigger = train_losses.check(loss_new)
train_losses.update(loss_new)
save_var(params_raw, '{}/{}_{}_params'.format(PATH, time_,
feature_name))
print("iteration:{} \t current train losses:{}".format(
j, train_losses.get_latest(mean=True)))
save_txt(
'{}/loss_{}.txt'.format(PATH, feature_name),
time.strftime('%Y%m%d_%H_%M_%S') + ',' +
str(train_losses.get_latest(mean=True)) + ',\n')
pred_history.update(pred)
std_history.update(dstb_y.std(pred))
if std_history.bigger():
lamuda_history.update(lamuda_history.get_latest(mean=False))
else:
lamuda_tmp = lamuda_history.get_latest(mean=False) / GAMMA
if lamuda_tmp < 0.005:
lamuda_tmp = 0.005
lamuda_history.update(lamuda_tmp)
return net_enn, train_losses.get_latest(
mean=True), pred_history.get_latest(mean=False)
def model(mode,
src_dwh,
tgt_dwh,
src_idx=None,
len_src=None,
tgt_img=None,
tgt_idx=None,
len_tgt=None,
num_layers=3,
num_units=512,
learn_rate=1e-3,
decay_rate=1e-2,
dropout=0.1):
assert mode in ('train', 'valid', 'infer')
self = Record()
src_d, src_w, src_h = src_dwh
tgt_d, tgt_w, tgt_h = tgt_dwh
with scope('source'):
# input nodes
src_idx = self.src_idx = placeholder(tf.int32, (None, None), src_idx,
'src_idx') # n s
len_src = self.len_src = placeholder(tf.int32, (None, ), len_src,
'len_src') # n
# time major order
src_idx = tf.transpose(src_idx, (1, 0)) # s n
emb_src = tf.one_hot(src_idx, src_d) # s n v
for i in range(num_layers):
with scope("rnn{}".format(i + 1)):
emb_fwd, _ = tf.contrib.cudnn_rnn.CudnnGRU(
1, num_units, dropout=dropout,
name='fwd')(emb_src, training='train' == mode)
emb_bwd, _ = tf.contrib.cudnn_rnn.CudnnGRU(
1, num_units, dropout=dropout,
name='bwd')(tf.reverse_sequence(emb_src,
len_src,
seq_axis=0,
batch_axis=1),
training='train' == mode)
emb_src = tf.concat(
(emb_fwd,
tf.reverse_sequence(
emb_bwd, len_src, seq_axis=0, batch_axis=1)),
axis=-1)
# emb_src = tf.layers.dense(emb_src, num_units, name= 'reduce_concat') # s n d
emb_src = self.emb_src = tf.transpose(emb_src, (1, 2, 0)) # n d s
with scope('target'):
# input nodes
tgt_img = self.tgt_img = placeholder(tf.uint8,
(None, None, tgt_h, tgt_w),
tgt_img, 'tgt_img') # n t h w
tgt_idx = self.tgt_idx = placeholder(tf.int32, (None, None), tgt_idx,
'tgt_idx') # n t
len_tgt = self.len_tgt = placeholder(tf.int32, (None, ), len_tgt,
'len_tgt') # n
# time major order
tgt_idx = tf.transpose(tgt_idx) # t n
tgt_img = tf.transpose(tgt_img, (1, 0, 2, 3)) # t n h w
tgt_img = flatten(tgt_img, 2, 3) # t n hw
# normalize pixels to binary
tgt_img = tf.to_float(tgt_img) / 255.0
# tgt_img = tf.round(tgt_img)
# todo consider adding noise
# causal padding
fire = self.fire = tf.pad(tgt_img, ((1, 0), (0, 0), (0, 0)),
constant_values=0.0)
true = self.true = tf.pad(tgt_img, ((0, 1), (0, 0), (0, 0)),
constant_values=1.0)
tidx = self.tidx = tf.pad(tgt_idx, ((0, 1), (0, 0)), constant_values=1)
mask_tgt = tf.transpose(tf.sequence_mask(len_tgt + 1)) # t n
with scope('decode'):
# needs to get input from latent space to do attention or some shit
decoder = self.decoder = tf.contrib.cudnn_rnn.CudnnGRU(num_layers,
num_units,
dropout=dropout)
state_in = self.state_in = tf.zeros(
(num_layers, tf.shape(fire)[1], num_units))
x, _ = _, (self.state_ex, ) = decoder(fire,
initial_state=(state_in, ),
training='train' == mode)
# transform mask to -inf and 0 in order to simply sum for whatever the f**k happens next
mask = tf.log(tf.sequence_mask(len_src, dtype=tf.float32)) # n s
mask = tf.expand_dims(mask, 1) # n 1 s
# multi-head scaled dot-product attention
x = tf.transpose(x, (1, 2, 0)) # t n d ---> n d t
attn = Attention(num_units, num_units, 2 * num_units)(x, emb_src, mask)
if 'train' == mode: attn = tf.nn.dropout(attn, 1 - dropout)
x = Normalize(num_units)(x + attn)
x = tf.transpose(x, (2, 0, 1)) # n d t ---> t n d
if 'infer' != mode:
x = tf.boolean_mask(x, mask_tgt)
true = tf.boolean_mask(true, mask_tgt)
tidx = tf.boolean_mask(tidx, mask_tgt)
with scope('output'):
y = tf.layers.dense(x, tgt_h * tgt_w, name='dense_img')
z = tf.layers.dense(x, tgt_d, name='logit_idx')
pred = self.pred = tf.clip_by_value(y, 0.0, 1.0)
prob = self.prob = tf.nn.softmax(z)
pidx = self.pidx = tf.argmax(z, axis=-1, output_type=tf.int32)
with scope('losses'):
diff = true - pred
mae = self.mae = tf.reduce_mean(tf.abs(diff), axis=-1)
mse = self.mse = tf.reduce_mean(tf.square(diff), axis=-1)
xid = self.xid = tf.nn.sparse_softmax_cross_entropy_with_logits(
logits=z, labels=tidx)
err = self.err = tf.not_equal(tidx, pidx)
loss = tf.reduce_mean(xid)
with scope('update'):
step = self.step = tf.train.get_or_create_global_step()
lr = self.lr = learn_rate / (1.0 +
decay_rate * tf.sqrt(tf.to_float(step)))
if 'train' == mode:
down = self.down = tf.train.AdamOptimizer(lr).minimize(loss, step)
return self
class FileSystem(Record("slog", "path_encoder")):
"""Encapsulates all of the operations we need on the FileSystem.
The most important part is probably listing/stating."""
READ_MODE = "rb"
NEW_WRITE_MODE = "wb"
EXISTING_WRITE_MODE = "r+b"
# slog needs to have
def __new__(cls, slog):
return cls.new(slog, PathEncoder())
def encode_path(fs, path):
return fs.path_encoder.encode_path(path)
def decode_path(fs, path):
return fs.path_encoder.decode_path(path)
def exists(fs, path):
encoded_path = fs.encode_path(path)
return os.path.exists(encoded_path)
def isdir(fs, path):
encoded_path = fs.encode_path(path)
return os.path.isdir(encoded_path)
def isfile(fs, path):
encoded_path = fs.encode_path(path)
return os.path.isfile(encoded_path)
def isempty(fs, path):
encoded_path = fs.encode_path(path)
for _ in fs.list(encoded_path):
return False
return True
# yields FileStat, with same "root marker" rules as self.list(...)
#
# On my 2008 Macbook, reads about 10,000 files/sec when doing small
# groups (5,000 files), and 4,000 files/sec when doing large
# (200,000). These means it can take anywhere from .1 sec to 1
# minute. Cacheing seems to improve performance by about 30%.
# While running, the CPU is pegged :(. Oh well, 60,000 files in 8
# sec isn't too bad. That's my whole home directory.
#
# On my faster linux desktop machine, it's about 30,000 files/sec
# when cached, even for 200,00 files, which is a big improvement.
def list_stats(fs, root, root_marker=None, names_to_ignore=frozenset()):
return fs.stats(
fs.list(root,
root_marker=root_marker,
names_to_ignore=names_to_ignore))
# yields a RootedPath for each file found in the root. The intial
# root is the given root. Deeper in, if there is a "root_marker"
# file in a directory, that directory becomes a new root.
def list(fs, root, root_marker=None, names_to_ignore=frozenset()):
listdir = os.listdir
join = os.path.join
isdir = os.path.isdir
islink = os.path.islink
def decode(encoded_path):
try:
return fs.decode_path(encoded_path)
except Exception as err:
fs.slog.path_error(
"Could not decode file path {0}: {1}".format(
repr(encoded_path)), err)
return None
# We pass root around so that we only have to decode it once.
def walk(root, encoded_root, encoded_parent):
child_names = listdir(encoded_parent)
if root_marker is not None:
if root_marker in child_names:
encoded_root = encoded_parent
root = decode(encoded_root)
# If decoding root fails, no point in traversing any futher.
if root is not None:
for child_name in child_names:
if child_name not in names_to_ignore:
encoded_full = join(encoded_parent, child_name)
if isdir(encoded_full):
if not islink(encoded_full):
for child in \
walk(root, encoded_root, encoded_full):
yield child
else:
rel = decode(encoded_full[len(encoded_root) + 1:])
if rel:
yield RootedPath(root, rel)
encoded_root = fs.encode_path(root)
return walk(root, encoded_root, encoded_root)
# yields FileStats
def stats(fs, rpaths):
stat = os.stat
for rpath in rpaths:
try:
encoded_path = fs.encode_path(rpath.full)
stats = stat(encoded_path)
size = stats[STAT_SIZE_INDEX]
mtime = stats[STAT_MTIME_INDEX]
yield FileStat(rpath, size, mtime)
except OSError:
pass # Probably a link
# returns (size, mtime)
def stat(fs, path):
encoded_path = fs.encode_path(path)
stats = os.stat(encoded_path)
return stats[STAT_SIZE_INDEX], stats[STAT_MTIME_INDEX]
# Will not throw OSError for no path. Will return False in that case.
def stat_eq(fs, path, size, mtime):
try:
(current_size, current_mtime) = fs.stat(path)
return (current_size == size and mtimes_eq(current_mtime, mtime))
except OSError:
return False
def read(fs, path, start=0, size=None):
encoded_path = fs.encode_path(path)
with open(path, fs.READ_MODE) as file:
if loc > 0:
file.seek(start, 0)
if size:
return file.read(size)
else:
return file.read()
# On my 2008 Macbook, with SHA1, it can hash 50,000 files
# totalling 145GB (about 3MB each file) in 48min, which is 17
# files totalling 50MB/sec. So, if you scan 30GB of new files, it
# will take 10min. During that time, CPU usage is ~80%.
def hash(fs, path, hash_type=hashlib.sha1, chunk_size=100000):
if hash_type == None:
return ""
hasher = hash_type()
for chunk_data in fs._iter_chunks(path, chunk_size):
hasher.update(chunk_data)
return hasher.digest()
def _iter_chunks(fs, path, chunk_size):
encoded_path = fs.encode_path(path)
with open(path, fs.READ_MODE) as file:
chunk = file.read(chunk_size)
while chunk:
yield chunk
chunk = file.read(chunk_size)
def write(fs, path, contents, start=None, mtime=None):
encoded_path = fs.encode_path(path)
fs.create_parent_dirs(path)
if (start is not None) and fs.exists(encoded_path):
mode = fs.EXISTING_WRITE_MODE
else:
mode = fs.NEW_WRITE_MODE
with open(encoded_path, mode) as file:
if start is not None:
file.seek(start, 0)
assert start == file.tell(), \
"Failed to seek to proper location in file"
file.write(contents)
if mtime is not None:
fs.touch(encoded_path, mtime)
def touch(fs, path, mtime):
encoded_path = fs.encode_path(path)
os.utime(encoded_path, (mtime, mtime))
def create_parent_dirs(fs, path):
fs.create_dir(parent_path(path))
def create_dir(fs, path):
encoded_path = fs.encode_path(path)
if not os.path.exists(encoded_path):
os.makedirs(encoded_path)
# # Blows up if existing stuff "in the way".
def move(fs, from_path, to_path, mtime=None):
encoded_from_path = fs.encode_path(from_path)
encoded_to_path = fs.encode_path(to_path)
fs.create_parent_dirs(to_path)
os.rename(encoded_from_path, encoded_to_path)
if mtime is not None:
fs.touch(to_path, mtime)
# Blows up if existing stuff "in the way".
def copy(fs, from_path, to_path, mtime=None):
encoded_from_path = fs.encode_path(from_path)
encoded_to_path = fs.encode_path(to_path)
fs.create_parent_dirs(to_path)
shutil.copyfile(encoded_from_path, encoded_to_path)
if mtime is not None:
fs.touch(to_path, mtime)
# Blows up if non-empy directory
def delete(fs, path):
encoded_path = fs.encode_path(path)
if os.path.exists(encoded_path):
os.remove(encoded_path)
def remove_empty_parent_dirs(fs, path):
encoded_parent_path = fs.encode_path(parent_path(path))
try:
os.removedirs(encoded_parent_path)
except OSError:
pass # Not empty
from util import Record
config = Record(
trial = None
, ckpt = None
, seed = 0
### data
, unk = 0
, eos = 1
, bos = 2
, cap = 64
### model
, dim_voc = 8192
, dim_emb = 512
, dim_mid = 2048
### batch
, batch_train = 300
, batch_infer = 256
, batch_valid = 512
)
paths = Record(
raw = "../data/raw"
, data = "../data/master"
, pred = "../pred"
, ckpt = "../ckpt"
, log = "../log"
)
class FileDiff(Record("type", "gpath", "rpath", "size", "mtime", "hash")):
@property
def was_deleted(entry):
return entry.mtime == DELETED_MTIME
def vAe(
mode,
src=None,
tgt=None,
# model spec
dim_tgt=8192,
dim_emb=512,
dim_rep=1024,
rnn_layers=3,
bidirectional=True,
bidir_stacked=True,
attentive=False,
logit_use_embed=True,
# training spec
accelerate=1e-4,
learn_rate=1e-3,
bos=2,
eos=1):
# dim_tgt : vocab size
# dim_emb : model dimension
# dim_rep : representation dimension
#
# unk=0 for word dropout
assert mode in ('train', 'valid', 'infer')
self = Record(bos=bos, eos=eos)
with scope('step'):
step = self.step = tf.train.get_or_create_global_step()
rate = accelerate * tf.to_float(step)
rate_keepwd = self.rate_keepwd = tf.sigmoid(rate)
rate_anneal = self.rate_anneal = tf.tanh(rate)
rate_update = self.rate_update = learn_rate / (tf.sqrt(rate) + 1.0)
with scope('src'):
src = self.src = placeholder(tf.int32, (None, None), src, 'src')
src = tf.transpose(src) # time major order
src, msk_src, len_src = trim(src, eos)
with scope('tgt'):
tgt = self.tgt = placeholder(tf.int32, (None, None), tgt, 'tgt')
tgt = tf.transpose(tgt) # time major order
tgt, msk_tgt, len_tgt = trim(tgt, eos)
msk_tgt = tf.pad(msk_tgt, ((1, 0), (0, 0)), constant_values=True)
# pads for decoder : lead=[bos]+tgt -> gold=tgt+[eos]
lead, gold = tgt, tf.pad(tgt,
paddings=((0, 1), (0, 0)),
constant_values=eos)
if 'train' == mode:
lead *= tf.to_int32(
tf.random_uniform(tf.shape(lead)) < rate_keepwd)
lead = self.lead = tf.pad(lead,
paddings=((1, 0), (0, 0)),
constant_values=bos)
# s : src length
# t : tgt length plus one padding, either eos or bos
# b : batch size
#
# len_src : b aka s
# msk_src : sb without padding
# msk_tgt : tb with eos
#
# lead : tb with bos
# gold : tb with eos
with scope('embed'):
b = (6 / (dim_tgt / dim_emb + 1))**0.5
embedding = tf.get_variable('embedding', (dim_tgt, dim_emb),
initializer=tf.random_uniform_initializer(
-b, b))
emb_tgt = tf.gather(embedding, lead,
name='emb_tgt') # (t, b) -> (t, b, dim_emb)
emb_src = tf.gather(embedding, src,
name='emb_src') # (s, b) -> (s, b, dim_emb)
with scope('encode'): # (s, b, dim_emb) -> (b, dim_emb)
reverse = partial(tf.reverse_sequence,
seq_lengths=len_src,
seq_axis=0,
batch_axis=1)
if bidirectional and bidir_stacked:
for i in range(rnn_layers):
with scope("rnn{}".format(i + 1)):
emb_fwd, _ = layer_rnn(1, dim_emb, name='fwd')(emb_src)
emb_bwd, _ = layer_rnn(1, dim_emb,
name='bwd')(reverse(emb_src))
hs = emb_src = tf.concat((emb_fwd, reverse(emb_bwd)),
axis=-1)
elif bidirectional:
with scope("rnn"):
emb_fwd, _ = layer_rnn(rnn_layers, dim_emb,
name='fwd')(emb_src)
emb_bwd, _ = layer_rnn(rnn_layers, dim_emb,
name='bwd')(reverse(emb_src))
hs = tf.concat((emb_fwd, reverse(emb_bwd)), axis=-1)
else:
hs, _ = layer_rnn(rnn_layers, dim_emb, name='rnn')(emb_src)
with scope('cata'):
# extract the final states from the outputs: bd <- sbd, b2
h = tf.gather_nd(
hs,
tf.stack(
(len_src - 1, tf.range(tf.size(len_src), dtype=tf.int32)),
axis=1))
if attentive: # todo fixme
# the values are the outputs from all non-padding steps;
# the queries are the final states;
h = layer_nrm(h + tf.squeeze( # bd <- bd1
attention( # bd1 <- bd1, bds, b1s
tf.expand_dims(h, axis=2), # query: bd1 <- bd
tf.transpose(hs, (1, 2, 0)), # value: bds <- sbd
tf.log(
tf.to_float( # -inf,0 mask: b1s <- sb <- bs
tf.expand_dims(tf.transpose(msk_src),
axis=1))),
int(h.shape[-1])),
2))
with scope('latent'): # (b, dim_emb) -> (b, dim_rep) -> (b, dim_emb)
# h = layer_aff(h, dim_emb, name='in')
mu = self.mu = layer_aff(h, dim_rep, name='mu')
lv = self.lv = layer_aff(h, dim_rep, name='lv')
with scope('z'):
h = mu
if 'train' == mode:
h += tf.exp(0.5 * lv) * tf.random_normal(shape=tf.shape(lv))
self.z = h
h = layer_aff(h, dim_emb, name='ex')
with scope('decode'): # (b, dim_emb) -> (t, b, dim_emb) -> (?, dim_emb)
h = self.state_in = tf.stack((h, ) * rnn_layers)
h, _ = _, (self.state_ex, ) = layer_rnn(rnn_layers,
dim_emb,
name='rnn')(
emb_tgt,
initial_state=(h, ))
if 'infer' != mode: h = tf.boolean_mask(h, msk_tgt)
h = layer_aff(h, dim_emb, name='out')
with scope('logits'): # (?, dim_emb) -> (?, dim_tgt)
if logit_use_embed:
logits = self.logits = tf.tensordot(h, (dim_emb**-0.5) *
tf.transpose(embedding), 1)
else:
logits = self.logits = layer_aff(h, dim_tgt)
with scope('prob'):
prob = self.prob = tf.nn.softmax(logits)
with scope('pred'):
pred = self.pred = tf.argmax(logits, -1, output_type=tf.int32)
if 'infer' != mode:
labels = tf.boolean_mask(gold, msk_tgt, name='labels')
with scope('errt'):
errt_samp = self.errt_samp = tf.to_float(tf.not_equal(
labels, pred))
errt = self.errt = tf.reduce_mean(errt_samp)
with scope('loss'):
with scope('loss_gen'):
loss_gen_samp = self.loss_gen_samp = tf.nn.sparse_softmax_cross_entropy_with_logits(
labels=labels, logits=logits)
loss_gen = self.loss_gen = tf.reduce_mean(loss_gen_samp)
with scope('loss_kld'):
loss_kld_samp = self.loss_kld_samp = 0.5 * (
tf.square(mu) + tf.exp(lv) - lv - 1.0)
loss_kld = self.loss_kld = tf.reduce_mean(loss_kld_samp)
loss = self.loss = rate_anneal * loss_kld + loss_gen
if 'train' == mode:
with scope('train'):
train_step = self.train_step = tf.train.AdamOptimizer(
rate_update).minimize(loss, step)
return self
def fnn_policy_train(env,
policy,
value_network,
policy_optimizer,
value_optimizer,
value_loss_function,
args,
convergence_threshold=0.1):
"""
Parameters
----------
env: gym.wrappers.time_limit.TimeLimit
unwrapped gym simulated environment
policy: nn.module
model that learns a categorical distribution for p(a|s)
value_network: nn.module
model that learns state value function V(s)
policy_optimizer: torch.optim.Optimizer
optimizer that optimizes the parameters of the policy network
value_optimizer: torch.optim.Optimizer
optimizer that optimizes the parameters of the value network
value_loss_function: torch.nn.modules.loss
loss function for the value network
args: argparse.Namespace
args that specify the setting for an experiment
convergence_threshold: float
threshold that decides if the convergence of the policy is attained
Returns
-------
time_str: str
string of the format YearMonthDay-HourMinuteSeconds, which is used in naming files for distinguishing
between different experiments
policy_trained: nn.module
policy model that has been trained
"""
time_str = time.strftime("%Y%m%d-%H%M%S")
if args.record:
# Store results from different runs of the model separately.
results_directory = ''.join([
'/tmp', args.directory_name, '/training/', time_str,
'_discounting_',
str(args.gamma), '_update_frequency_',
str(args.update_frequency), '_value_update_times_',
str(args.value_update_times)
])
env = gym.wrappers.Monitor(env, results_directory)
if args.cuda:
th.cuda.manual_seed(args.seed)
FloatTensor = th.cuda.FloatTensor
policy.cuda()
value_network.cuda()
else:
th.manual_seed(args.seed)
FloatTensor = th.FloatTensor
import matplotlib.pyplot as plt
plt.ion()
try:
os.makedirs('fnn/training')
except OSError as exception:
if exception.errno != errno.EEXIST:
raise
Tensor = FloatTensor
# Create a list for storing Records.
records = Records(args.update_frequency)
value_losses = []
policy_losses = []
returns = []
for episode in range(1, args.episodes + 1):
state_ = env.reset()
done_ = False
episode_record = []
for timestep in range(1, 501):
if not done_:
if not args.cuda:
env.render()
state_ = th.from_numpy(state_.reshape(1, -1))
state = Variable(state_, requires_grad=False).type(Tensor)
p = policy.forward(state)
selection_ = th.multinomial(p, 1)
action = selection_.data[0]
p_action = p[0][action].view(1, -1)
next_state_, reward_, done_, info_ = env.step(action[0])
value = Tensor([reward_]).view(1, -1)
episode_record.append(
Record(state_, action, value, p_action, p.view(1, -1)))
# Update state values
for i in range(0, len(episode_record) - 1):
episode_record[i].value.add_(
(args.gamma**(len(episode_record) - 1 - i)) * value)
if done_:
returns.append(episode_record[0].value[0][0])
state_ = next_state_
records.push(episode_record)
if episode % args.update_frequency == 0:
history = records.pull()
state_history = Variable(th.cat(history.state),
requires_grad=False).type(Tensor)
value_history = Variable(th.cat(history.value),
requires_grad=False).type(Tensor)
prob_action_history = th.cat(
history.probability_action).type(Tensor)
prob_history = th.cat(history.probabilities).type(Tensor)
# Update the value network first.
for _ in range(args.value_update_times):
value_optimizer.zero_grad()
value = value_network.forward(state_history)
value_loss = value_loss_function(value, value_history)
value_losses.append(value_loss.data[0])
value_loss.backward()
value_optimizer.step()
# Now update the policy network.
policy_optimizer.zero_grad()
value_estimated_ = value_network.forward(state_history)
value_estimated = value_estimated_.detach()
policy_loss = fnn_policy_loss(value_history, value_estimated,
prob_action_history.view(-1, 1),
prob_history.view(-1, 3))
policy_loss = th.div(policy_loss, state_history.size()[0])
policy_losses.append(policy_loss.data[0])
if len(policy_losses) >= 2:
if abs(policy_losses[-1] -
policy_losses[-2]) < convergence_threshold:
if not args.cuda:
plt.ioff()
plt.close()
env.close()
return time_str, policy
policy_loss.backward()
policy_optimizer.step()
print(
'====> Episode: {} value_loss: {:.4f} policy_loss: {:.4f} return: {}'
.format(episode, value_losses[-1], policy_losses[-1],
returns[-1]))
if not args.cuda:
plt.clf()
plt.figure(1)
plt.subplot(311)
plt.xlabel('episodes')
plt.ylabel('cumulative rewards')
plt.plot(returns)
plt.subplot(312)
plt.xlabel('update every ' + str(args.update_frequency) +
' episodes')
plt.ylabel('value network losses')
plt.plot(value_losses)
plt.subplot(313)
plt.xlabel('update every ' + str(args.update_frequency) +
' episodes')
plt.ylabel('policy losses')
plt.plot(policy_losses)
plt.show()
plt.savefig(''.join([
'fnn/training/', time_str, '_discounting_',
str(args.gamma), '_update_frequency_',
str(args.update_frequency), '_value_update_times_',
str(args.value_update_times)
]) + '.png')
if not args.cuda:
plt.ioff()
plt.close()
env.close()
return time_str, policy
class GroupedPath(Record("groupid", "path")):
"""Like a FileSystem RootedPath, but relative to a group, not a
FileSystem path. Often known as a "gpath". """
pass
class MergeAction(Record("type", "gpath", "older", "newer", "details")):
def __new__(cls, type, older, newer, details = None):
gpath = get_gpath(older, newer)
return cls.new(type, gpath, older, newer, details)
class ActorCall(Record("name", "args", "kargs", "future")):
pass
class HistoryCache(Record("entries")):
def add_entries(self, entries):
self.entries.extend(entries)
class HistoryDiff(Record("type", "gpath", "latest1", "latest2")):
"""Compares the latest of the histories of a given gpath (GroupedPath)."""
def __new__(cls, type, latest1, latest2):
gpath = get_gpath(latest1, latest2)
return cls.new(type, gpath, latest1, latest2)
from util import Record
config = Record(
trial='m',
ckpt=None,
seed=0
### data
,
unk=0,
eos=1,
bos=2,
cap=64
### model
,
dim_src=8192,
dim_tgt=8192,
dim_emb=512,
dim_mid=2048,
depth=2
### batch
,
batch_train=64,
batch_valid=256,
total_valid=4096)
paths = Record(log="~/cache/tensorboard-logdir/eti",
raw="../data",
pred="../trial/pred",
ckpt="../trial/ckpt",
data="../trial/data")
os.environ['CUDA_VISIBLE_DEVICES'] = A.gpu
###############
# preparation #
###############
from util import Record, comp
from model import vAe as vae
from tqdm import tqdm
from util_io import pform, load_txt, load_json
from util_np import np, vpack, sample, partition
from util_sp import load_spm, encode_capped, encode_capped_sample_pair
from util_tf import tf, pipe
config = load_json(A.config)
P = Record(config['paths'])
C = Record(config['model'])
T = Record(config['train'])
tf.set_random_seed(A.seed)
#############
# load data #
#############
vocab = load_spm(P.vocab)
valid = np.load(P.valid)
def batch(size=T.batch_train,
path=P.train,
class MergeLogEntry(Record(*TABLE_FIELDS)):
pass