🚰 LSTM Cell Gates Visualizer
Cell state flows down a conveyor belt — the Forget Gate drains old memory, the Input Gate adds new.
📋 How To Use This Lab
Drag
Forget Gate
and
Input Gate
→
watch both valves open/close live and the flow numbers update.
Press
▶ Next Step
→
those exact gate settings get locked in and a new car joins the belt.
Set Forget Gate near 0
→
almost all old memory drains away. Near 1
→
it's kept almost entirely.
Set Input Gate near 0
→
new information barely gets in. Near 1
→
it floods in.
Step 0
C₀ = 5.000
Live Gate Preview
Previous Cell State
5.000
Forget Gate Valve
= 2.500
New Candidate
3.000
Input Gate Valve
= 1.500
New Cell State (preview)
4.000
Cell State Conveyor Belt
Forget Gate:
0.50
— how much OLD memory survives
Input Gate:
0.50
— how much NEW info gets added
◀ Previous Step
▶ Next Step
Auto Run ▶▶
↺ Reset
🚰 VALVIN
Drag both gates and watch the flow — then press Next Step to lock in this moment and add a car to the belt.
🧑🏫 PROF. TORCH
C_t = forget_gate × C_(t-1) + input_gate × candidate — that's the entire cell state update, every single step.