def __init__(self, v_dim, q_dim, num_hid, dropout=0.2):
super(NewAttention, self).__init__()
self.v_proj = FCNet([v_dim, num_hid])
self.q_proj = FCNet([q_dim, num_hid])
self.dropout = nn.Dropout(dropout)
self.linear = weight_norm(nn.Linear(q_dim, 1), dim=None)
def build_ParalCoAtt(task_name, dataset, params):
# w_emb = WordEmbedding(dataset.dictionary.ntoken, 300, 0.0)
# q_emb = QuestionEmbedding(300, num_hid, 1, False, 0.0)
num_hid = params['num_hid']
q_proj = FCNet([768, num_hid])
bi_num_hid = num_hid * 2
co_atts = nn.ModuleList([
ParalCoAttention(dataset.v_dim,
num_hid,
num_hid,
inter_dims=params['scale'],
R=len(params['scale']))
for _ in range(params['reasonSteps'])
])
v_fusion_att = paraAttention(fuse_dim=dataset.v_dim,
glimpses=params['sub_nums'],
inputs_dim=dataset.v_dim,
att_dim=num_hid)
q_fusion_att = paraAttention(fuse_dim=num_hid,
glimpses=params['sub_nums'],
inputs_dim=num_hid,
att_dim=num_hid)
context_gate = FCNet([bi_num_hid, bi_num_hid])
classifier = SimpleClassifier(bi_num_hid, num_hid * 2, 1, 0.5)
return ActionModel(task_name, q_proj, co_atts, q_fusion_att, v_fusion_att,
context_gate, classifier)
def build_baseline(task_name, dataset, num_hid):
w_emb = WordEmbedding(dataset.dictionary.ntoken, 300, 0.0)
q_emb = QuestionEmbedding(300, num_hid, 1, False, 0.0)
v_emb = QuestionEmbedding(dataset.v_dim, num_hid, 1, False, 0.0)
q_net = FCNet([q_emb.num_hid, num_hid])
v_net = FCNet([num_hid, num_hid])
classifier = SimpleClassifier(num_hid, num_hid * 2, 1, 0.5)
return CountModel(task_name, w_emb, q_emb, v_emb, q_net, v_net, classifier)
def __init__(self, v_dim, q_dim, hid_dim, dropout=[.2, .5]):
super(CoAttention, self).__init__()
self.v_dim = v_dim
self.q_dim = q_dim
self.hid_dim = hid_dim
act = "ReLU"
self.v_net = FCNet([v_dim, self.hid_dim], act=act, dropout=dropout[0])
self.q_net = FCNet([q_dim, self.hid_dim], act=act, dropout=dropout[0])
def __init__(self, v_dim, q_dim, num_hid, dropout=0.2, max_len=35):
super(CoAttention, self).__init__()
self.v_proj = FCNet([v_dim, num_hid])
self.q_proj = FCNet([q_dim, num_hid])
self.tran_linear = weight_norm(nn.Linear(num_hid, num_hid))
self.dropout = nn.Dropout(dropout)
self.linear_q = weight_norm(nn.Linear(max_len, 1), dim=None)
self.linear_v = weight_norm(nn.Linear(max_len, 1), dim=None)
def __init__(self, v_dim, q_dim, num_hid, inter_dims, R, dropout=[.2, .5]):
super(ParalCoAttention, self).__init__()
self.R = R
self.num_dim = num_hid
self.v_dim = v_dim
self.q_dim = q_dim
self.inter_dims = inter_dims
act = "ReLU"
assert len(self.inter_dims) == self.R
self.list_v_net = nn.ModuleList([
FCNet([v_dim, inter_dim], act=act, dropout=dropout[0])
for inter_dim in self.inter_dims
])
self.list_q_net = nn.ModuleList([
FCNet([q_dim, inter_dim], act=act, dropout=dropout[0])
for inter_dim in self.inter_dims
])
assert len(self.list_v_net) == self.R
assert len(self.list_q_net) == self.R
def build_temporalAtt(task_name, dataset, params):
# w_emb = WordEmbedding(dataset.dictionary.ntoken, 300, 0.0)
# q_emb = QuestionEmbedding(300, num_hid, 1, False, 0.0)
num_hid = params['num_hid']
q_proj = FCNet([768, num_hid])
bi_num_hid = num_hid*2
co_att = CoAttention(dataset.v_dim, num_hid, bi_num_hid)
v_fusion_att = paraAttention(fuse_dim=dataset.v_dim, glimpses=params['sub_nums'], inputs_dim=dataset.v_dim, att_dim=num_hid)
q_fusion_att = paraAttention(fuse_dim=num_hid, glimpses=params['sub_nums'], inputs_dim=num_hid, att_dim=num_hid)
classifier = SimpleClassifier(
bi_num_hid, num_hid * 2, dataset.num_ans_candidates, 0.5)
return FrameQAModel(task_name, q_proj, co_att, q_fusion_att, v_fusion_att, classifier)
def build_temporalAtt(task_name, dataset, params):
num_hid = params['num_hid']
q_proj = FCNet([768, num_hid])
bi_num_hid = num_hid * 2
co_att = CoAttention(dataset.v_dim, num_hid, bi_num_hid)
v_fusion_att = paraAttention(fuse_dim=dataset.v_dim,
glimpses=params['sub_nums'],
inputs_dim=dataset.v_dim,
att_dim=num_hid)
q_fusion_att = paraAttention(fuse_dim=num_hid,
glimpses=params['sub_nums'],
inputs_dim=num_hid,
att_dim=num_hid)
classifier = SimpleClassifier(2 * num_hid, num_hid * 2, 1, 0.5)
return ActionModel(task_name, q_proj, co_att, q_fusion_att, v_fusion_att,
classifier)
def __init__(self, v_dim, q_dim, num_hid):
super(Attention, self).__init__()
self.nonlinear = FCNet([v_dim + q_dim, num_hid])
self.linear = weight_norm(nn.Linear(num_hid, 1), dim=None)