Data Science Questions, Problems & Solutions : TransWikia.com ~ Page 59

Different values of mean absolute error when using GridSearchCV for max_leaf_nodes vs manually optimising max_leaf_nodes

I am trying out hyperparameter tuning vs manually selecting the...

Asked on 08/06/2021 by spectre

1 answer

Predicting categories from data having no targets

I have training data that just contains transaction history of a store which includes user id of the customer, the product purchased and the cost of the purchase. There are...

Asked on 08/06/2021

0 answer

what make lightGBM run faster than XGBoost?

I am curious on what differences in implementation allow speed up of lightGBM over XGBoost, some times up to magnitude of orders....

Asked on 08/06/2021

1 answer

Explainability and Autoencoders

suppose I have an autoencoder as a two-stack LSTM that takes in sequences of $n$ features of some length $m$. Let's say that the dimension of my encoding...

Asked on 08/06/2021 by Mariah

1 answer

Does MLPClassifier (sklearn) support different activations for different layers?

According to the documentation, it says the 'activation' argument specifies: "Activation function for the hidden layer"Does that mean that you cannot use a different activation function in different layers?...

Asked on 08/06/2021 by DeLorean88

1 answer

How does fusing operations lower accuracy for machine learning models?

In this talk the speaker Sachin Joglekar mentions that it's important to consider tradeoffs when choosing delegates for optimizing Tensorflow Lite. One of the tradeoffs he mentions...

Asked on 08/06/2021 by zebular13

0 answer

First perform data augmentation or normalization?

Should I first perform data augmentation or normalization in deep learning? I am mainly interested in 2D and 3D input data. In tutorials that I have seen so far the...

Asked on 08/06/2021

1 answer

Consequences of using XGBoost regressor for small dataset(< 500 rows)

I am using XGBoost regressor to train my model for 322 rows of data and the train and test split is as follows: ((257, 9), (257,), (65, 9), (65,)) I...

Asked on 08/05/2021 by Anubhav Nehru

1 answer

Data Warehouse design schema for sales (items, shopping carts, ..)

I have to design some OLAP-Cubes based on an OLTP database for the sales. At first, that sounds very basic and common but I struggle with the item <-> shopping...

Asked on 08/05/2021 by naheliegend

0 answer

How can my loss be stable while the gradient keeps growing?

I have been working on an Offline/Batch Reinforcement Learning problem where I am using a BCQ-DDQN model as a Q-table. The model input is a state of 8 dimensions, and...

Asked on 08/05/2021 by MetaHG

0 answer

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