Skip to content

LSTM: Move Wx matrix multiplication out of the loop in forward #187

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
antihutka wants to merge 1 commit into
base: master
Choose a base branch
from
Open

LSTM: Move Wx matrix multiplication out of the loop in forward #187

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 2 additions & 3 deletions LSTM.lua
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -143,7 +143,7 @@ function layer:updateOutput(input)
end
end

local bias_expand = self.bias:view(1, 4 * H):expand(N, 4 * H)
local bias_expand = self.bias:view(1, 4 * H):expand(N * T, 4 * H)
local Wx = self.weight[{{1, D}}]
local Wh = self.weight[{{D + 1, D + H}}]

Expand All @@ -152,12 +152,11 @@ function layer:updateOutput(input)
c:resize(N, T, H):zero()
local prev_h, prev_c = h0, c0
self.gates:resize(N, T, 4 * H):zero()
self.gates:view(N * T, 4 * H):addmm(bias_expand, x:view(N * T, D), Wx)
for t = 1, T do
local cur_x = x[{{}, t}]
local next_h = h[{{}, t}]
local next_c = c[{{}, t}]
local cur_gates = self.gates[{{}, t}]
cur_gates:addmm(bias_expand, cur_x, Wx)
cur_gates:addmm(prev_h, Wh)
cur_gates[{{}, {1, 3 * H}}]:sigmoid()
cur_gates[{{}, {3 * H + 1, 4 * H}}]:tanh()
Expand Down