Kaggle Paris Meetup

Meetup #22 

Welcome by Equancy

Agenda

1. Current & past challenges
2. Optuna , short presentation
3. "Song to Text" by Andrea Vaglio from Deezer
4.  Next meetup

Quelques sites pratiques

1. Base de données des meilleures solutions http://kagglesolutions.com/
2. Base de données des soumissions http://kaggledb.com/
3. Papers with code   https://paperswithcode.com/ 
4. etc...

RSNA - Intracranial Hemorrhage Detection

• Image object detection, build a model that detects intracranial hem. on medical images (dcim format) - 6 classes
• Size  : train  imgs , test  imgs - 200 Go+ download and uncompress. 5Go with 112x112pix res.
• Metric : averaged log loss
• leak in the stage 2 (score 0.00), and LB shake up
• 5 submissions per day; 2 stages competitions
• Some kernels
• finished in november
• prices : 25 k$ in total
• Win a bronze medal with running a almost public code from github by Appian competitor author of kaggledb.com site !
• https://github.com/appian42/kaggle-rsna-intracranial-hemorrhage
• repo with all gold medals : https://www.kaggle.com/c/rsna-intracranial-hemorrhage-detection/discussion/117242#latest-685199

Severstal : Steel Defect Detection

• Image segmentation
• Size  : 1Go
• Metric : Dice coefficient
• 5 submissions per day, code competition
• Some kernels see kaggle
• finished in november
• prices : 120 k$ in total, + efficiency prize https://www.kaggle.com/c/severstal-steel-defect-detection/discussion/117486#latest-674229
• mlcomp framework https://www.kaggle.com/lightforever/severstal-mlcomp-catalyst-infer-0-90672

ASHRAE - Energy predictor

• Times series of consumptions, around predicting building energy efficiency
• Size  : 379 Mo, issue submission of 300 Mo compressed files
• Metric : Root Mean Squared Logarithmic Error
• 2 submissions per day
• Some kernels https://www.kaggle.com/corochann/optuna-tutorial-for-hyperparameter-optimization pour introduire Optuna !
• finishing in 18 days
• prices : 25 k$ in total
• Leak in site prediction
•  

Agenda

1. Current & past challenges
2. Optuna , short presentation
3. "Song to Text" by Andrea Vaglio from Deezer
   
4.  Next meetup

OPTUNA  - hyperopt like HPO

• https://optuna.org/
• Everything is described in https://neptune.ml/blog/optuna-vs-hyperopt
• Coming from Preferred Network Inc. (Japan)
• See chainer DL fwk

Agenda

1. Current & past challenges
2. Optuna , short presentation
3. "Song to Text "by Andrea Vaglio from Deezer
4.  Next meetup