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nilabha 124

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Nilabha Bhattacharya

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Bangalore, IN

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Challenges Entered

Classify images of snake species from around the world

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graded 9963
failed 9876
failed 9775

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graded 9744
graded 9743

Multi Agent Reinforcement Learning on Trains.

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failed 32805
failed 32778
failed 32758

Recognise Handwritten Digits

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graded 60255
failed 60250

Online News Prediction

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failed 60273
graded 60271

Crowdsourced Map Land Cover Prediction

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graded 60285
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Bronze 1
Trustable
May 16, 2020

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    May 16, 2020

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  • May 16, 2020
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Flatland Challenge

Solution Codes and Approaches

7 months ago

I haven’t submitted it yet. But I can share the results of few envs from the local evaluation

Evaluation Number : 1
Reward : -43.83333333333334

====================================================================================================
Evaluation Number : 1
Current Env Path : ./test-envs/Test_5/Level_1.pkl
Env Creation Time : 0.42258167266845703
Number of Steps : 1120
Mean/Std of Time taken by Controller : 0.01895513470683779 0.0018288652394336735
Mean/Std of Time per Step : 0.1480530451451029 0.00961317459096298

Evaluation Number : 2
Reward : -43.41666666666668

====================================================================================================
Evaluation Number : 2
Current Env Path : ./test-envs/Test_3/Level_0.pkl
Env Creation Time : 0.29577183723449707
Number of Steps : 960
Mean/Std of Time taken by Controller : 0.02316151708364487 0.002471594250438426
Mean/Std of Time per Step : 0.14834324022134146 0.01293447105111391

Evaluation Number : 3
Reward : -52.00000000000002

====================================================================================================
Evaluation Number : 3
Current Env Path : ./test-envs/Test_6/Level_0.pkl
Env Creation Time : 1.5495717525482178
Number of Steps : 1760
Mean/Std of Time taken by Controller : 0.02436668398705396 0.0039495335690074304
Mean/Std of Time per Step : 0.19943869560956956 0.024274925544436107

Solution Codes and Approaches

7 months ago

I have added another code file with a different approach that does not use a model.

The code can be found in the local Github location

For a simple demonstration of how we solve a dense railway network, simply run the file
MultipleAgentNavigationObsConflict.py.
This file does not use any additional packages other than the ones required for flatland and can be run with the latest flatland-rl version 2.1.10

Solution Codes and Approaches

8 months ago

I have put up some code here


This includes actorcritictrainer.py file which implements an actor critic approach and ESStrategyTraining.py which implements an evolutionary strategy approach.
The results seem to be similar to the Duelling Double DQN approach. I have saved sample results and pre-trained weights.
This has been done using stock observations.

Adding to Erik’s comments, my observations are

  • These models do not show improvement even after training for longer periods and show comparable performance, suggesting that we need to do better feature engineering.

As of now, I next plan to do some visualizations and add documentation to the code to better.

Any comments/suggestions are most welcome.

Submission Errors Flatland

About 1 year ago

Hi @mohanty @ashivani

I am getting an error on evaluation
https://gitlab.aicrowd.com/nilabha/flatland-challenge-starter-kit/issues/6

Can yo help with the logs

Submission Errors Flatland

About 1 year ago

@ashivani

I am not able to see logs but I can see comments on the issue though only the first line.

2019-08-03T15:15:13.396985671Z Traceback (most recent call last):…

Submission Errors Flatland

About 1 year ago

@mohanty

I am getting an error in evaluation
https://gitlab.aicrowd.com/nilabha/flatland-challenge-starter-kit/issues/3

Somehow I cannot see any error logs though debug=True
I have tested this in the local environment (using redis server etc…) and it is working.
Can you please help with the error logs.

Thanks,
Nilabha

Snake Species Identification Challenge

Submission Errors

About 1 year ago

Thanks kongas
I used the below code to remove the images

filter_func = lambda x: str(x) not in lsRemove
test_img = (ImageList.from_folder(path).filter_by_func(filter_func))

Though there is another error…
https://gitlab.aicrowd.com/nilabha/snake-species-identification-challenge/issues/33

@mohanty
Has the competition ended or will it restart again. Would have liked to get a score as my validation results were good.
Is it possible to get the error logs?

Evaluation stuck [Edit : Evaluation took a long time]

About 1 year ago

@mohanty

all submissions seems to be queued for a long time.
Is there some problem?

Thanks

Submission Errors

About 1 year ago

@mohanty
I have put a workaround to find the images which fail loading and delete them and later add these probability which are all equal to 1/45
However I still get an error
https://gitlab.aicrowd.com/nilabha/snake-species-identification-challenge/issues/32

Can you please help with the error?

Thanks,
Nilabha

Submission Errors

About 1 year ago

@mohanty @arjun_nemani

Can you please help with the error logs. I keep getting an evaluation failure.
https://gitlab.aicrowd.com/nilabha/snake-species-identification-challenge/issues/31

I have tried reducing the batch size also in case of any memory issue. However the error still seems to be there.
From trial and error I notice that the error happens in the code line learn.tta function from the fast ai library.

Thanks,
Nilabha

Submission Errors

About 1 year ago

@mohanty
I have been using trial and error to see which line of code the submission is failing, unfortunately I have crossed the limit of submission
Could you provide the error logs to debug the issue?
I have isolated the issue to few lines of code but it would be helpful to know what is the error.

Thanks,
Nilabha

Submission Errors

About 1 year ago

@mohanty
I have set num_workers=0
I still get the error.
https://gitlab.aicrowd.com/nilabha/snake-species-identification-challenge/issues/24
Could you share the error logs?

Thanks,
Nilabha

Submission Errors

About 1 year ago

I am feeling guilty having to ask you everytime :stuck_out_tongue:
I wouldn’t mind if all my logs are made public to be honest.

But on another note would the deadlines of this competition be extended. Due to less time left in the competition, I haven’t done much to replicate this submission process locally (I think there are some instructions in the link https://github.com/stanfordnmbl/neurips2019-learning-to-move-starter-kit). As of now I just do bash run.sh to test that the code is working in my local.

Submission Errors

About 1 year ago

@mohanty
I have redone with a fresh copy from repo and updating the files.
Sorry for asking you again but I still get the error in my latest submission http://gitlab.aicrowd.com/nilabha/snake-species-identification-challenge/issues/22
Do you know what is the error?

Thanks,
Nilabha

Submission Errors

About 1 year ago

@mohanty
run.sh it seems already has executable permission, hence there is no change in my local files on doing chmod +x run.sh
permissions are -rwxrwxrwx in my local
I have looked at the permissions for the other files and they are the same.
Do you think there is some other error?

Thanks,
Nilabha

Submission Errors

About 1 year ago

Thanks. Its working now. The build was also failing due to the environmental.yaml checked using LFS.
Unfortunately the evaluation is failing now after a successful build. Can you kindly help me with the error logs?
https://gitlab.aicrowd.com/nilabha/snake-species-identification-challenge/issues/18

Submission Errors

About 1 year ago

@mohanty

I am trying to submit but I am getting below error
Submission failed : Malformed JSON provided in aicrowd.json
https://gitlab.aicrowd.com/nilabha/snake-species-identification-challenge/issues/15

I don’t see any issues with this file.

Do you know what is the problem?

Thanks,
Nilabha

Submission Errors

About 1 year ago

@mohanty

I have uploaded another version of environment.yml file but the image build fails.

Can you please provide me with the error logs?

https://gitlab.aicrowd.com/nilabha/snake-species-identification-challenge/issues/10

Thanks,
Nilabha

Submission Errors

About 1 year ago

Hi Mohanty

Thanks for the reply. I submitted some new submissions after committing but somehow they are not getting submitted for evaluation.
For example:
https://gitlab.aicrowd.com/nilabha/snake-species-identification-challenge/commits/submission-v3.2

Can you let me know what is the problem?

Thanks,
Nilabha

Thanks,
Nilabha

Submission Errors

About 1 year ago

@mohanty @shivam @arjun_nemani
I can’t quite find any logs available for my failed submission.
https://gitlab.aicrowd.com/nilabha/snake-species-identification-challenge/issues/3

Request you to kindly share the logs

I see many submissions of other participants also failing. In case of an issue in submission do we just message the organisers to get the logs or is there any other way.

Cannot upload trained model to gitlab.aicrowd

About 1 year ago

Its working now after I redid the whole thing and was able to push a submission. However I see the image built successfully but failed after that.I am not able to see any logs. Where can I see the error / log information of why it failed.

[aicrowd-bot @aicrowd-bot added [Failed] label after [image_built_successfully]

Cannot upload trained model to gitlab.aicrowd

About 1 year ago

I am getting an error pack exceeds maximum size

git push aicrowd submission-v0.3
Locking support detected on remote “aicrowd”. Consider enabling it with:
$ git config lfs.https://gitlab.aicrowd.com/*/info/lfs.locksverify true
Uploading LFS objects: 100% (12/12), 146 MB | 3.4 MB/s, done
Counting objects: 71, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (69/69), done.
remote: fatal: pack exceeds maximum allowed size
error: pack-objects died of signal 13MiB | 1.62 MiB/s
error: failed to push some refs to 'git@gitlab.aicrowd.com:
.git’

I get same error with git and git-lfs

Any idea what is the issue? Size including weights is less than 200 MB

Issue in Test Images

About 1 year ago

I notice that there are 44 images in the test set of 17331 are not readable. Few example are 1c56622f067257a814254b3a0d66a504.jpg , 2b8060650fbc5c4d04c831e37b6a2af3.jpg
Do we ignore these images? Will these be ignored in the submissions?

Following code gets the list of images:
lsFiles has the full list of paths for the images
from PIL import Image
lsRemove = []
for sFiles in tqdm(lsFiles):
try:
Image.open(sFiles)
except:
lsRemove.append(sFiles)

Submission Error Log for Snake Identification Competition

About 1 year ago

Hi Shivam,

Let me know if you are able to share the logs or where I can find them.
I am keen to try couple more submissions.

Thanks,
Nilabha

Submission Error Log for Snake Identification Competition

About 1 year ago

Hi Shivam

I cant quite find any logs in my gitlab issue.
https://gitlab.aicrowd.com/nilabha/snake-species-identification-challenge/issues/3

I see many submissions of other participants also failing. In case of an issue in submission do we just message you to get the logs or is there any other way.

Thanks,
Nilabha

Error/ Evaluation log for Snake Species Competition Submission

About 1 year ago

Hi,

I submitted my model for submission in the snake species competition but it has label as error. Can you send me the error logs or is there any way I can see the error logs?

Submission Error Log for Snake Identification Competition

About 1 year ago

Hi Shivam

I pushed my model to the gitlab rep for submission. However I see the image built successfully but failed after that.
[aicrowd-bot @aicrowd-bot added [Failed] label after [image_built_successfully]

I noticed this thread for the obstacle tower


where it says “debug”: true

I am interested in teh error log for
https://gitlab.aicrowd.com/nilabha/snake-species-identification-challenge/issues/3
Do we know how we can get the error logs or you will be able to provide it.

Thanks,
Nilabha

nilabha has not provided any information yet.