Recap of How to Win a Data Science Competition

ByAdmin July 10, 2021

Week – 1 Recap of How to Win a Data Science Competition

To propagate signal through network from input to output only

To calculate gradient of the loss function with respect to the parameters of the network

Select gradient update direction by flipping a coin

Make several random perturbations of parameters and go back to the best one

In the case 1 performance will drop more than in the case 2

In the case 1 performance will drop less than in the case 2

In the case 1 performance will be roughly the same as in the case 2

In the case 1 performance will drop less than in the case 2

In the case 1 performance will be roughly the same as in the case 2

In the case 1 performance will drop more than in the case 2

The quality of predictions in the case 1 will be roughly the same as the quality of the predictions in the case 2

The quality of predictions in the case 1 will be lower than the quality of the predictions in the case 2

The quality of predictions in the case 1 will be higher than the quality of the predictions in the case 2

Decision Tree

Random Forest

Linear model

k-NN

Linear model

Decision Tree

k-NN

Random Forest

How to Win a Data Science Competition

Metrics

ByAdmin July 11, 2021

week – 3 Metrics >>> How to Win a Data Science Competition Learn from Top Kagglers 1. Suppose we solve a binary classification task and our solution is scores with…

How to Win a Data Science Competition

Graded Advanced Features II Quiz

ByAdmin July 11, 2021

Week – 4 Graded Advanced Features II Quiz >>> How to Win a Data Science Competition Learn from Top Kagglers 1. Imagine that we apply X = PCA(n_components=5).fit_transform(data) and data…

How to Win a Data Science Competition

Feature extraction from text and images

ByAdmin July 10, 2021

Week – 1 Feature extraction from text and images >>> How to Win a Data Science Competition: Learn from Top Kagglers 1. Select true statements about n-grams 2 points N-grams…

How to Win a Data Science Competition

Data leakages

ByAdmin July 11, 2021

Week – 2 Data leakages >>> How to Win a Data Science Competition Learn from Top Kagglers 1. Suppose that you have a credit scoring task, where you have to…

How to Win a Data Science Competition

Mean encodings

ByAdmin July 11, 2021July 11, 2021

Week – 3 Mean encodings >>> How to Win a Data Science Competition: Learn from Top Kagglers 1. What can be an indicator of usefulness of mean encodings? 1 point…

How to Win a Data Science Competition

Feature preprocessing and generation with respect to models

ByAdmin July 10, 2021

Week – 1 Feature preprocessing and generation with respect to models 1. Suppose we have a feature with all the values between 0 and 1 except few outliers larger than…

Week – 1 Recap of How to Win a Data Science Competition

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