Hey everyone,

(approx. 2 lines)
```
# if ....:
# learning_rate = ...
# YOUR CODE STARTS HERE
# YOUR CODE ENDS HERE
```

Could someone please help me with this part. I tried so hard to understand how to use the if part but I couldn’t figure it out.

Thanks in advance for your help.
Cheers,
Younes

nramon
May 13, 2021, 11:17am
2
Hi, @Younes_hb .

`schedule_lr_decay`

gets called every epoch. But you want to update `learning_rate`

only `if`

the epoch number is a multiple of `time_interval`

.

Did that help?

1 Like

I am having the same problem:
I am using
if isinstance(epoch_num/time_interval, int):
but it doesn’t work.

Hi, @fabian .

I guess you were thinking about the mathematical definition of multiple . The problem is:

```
>>> type(1.0)
<class 'float'>
```

Think what `epoch_num/time_interval`

being an integer implies. It has nothing to do with Python data types (hint ).

Hello -

Thanks for the help @nramon , I got the if statement to work but the learning rate isn’t decreasing after the 10th and 100th epochs.

Any thoughts on what I might be missing? Been stuck for awhile. Thanks!

Check the condition of the if statement. You need to change the learning rate only when epoch number is a multiple of time interval. Think how can you code this condition.
Hint: modulo operator.

2 Likes

The problem was related to this . Enjoy the rest of the course, @cpedrosa !

P.S.: Good hint, @AnkitSaini