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Data Science : Recent Questions and Answers (Page 201)

Find answers to your questions about Data Science or help others by answering their Data Science questions.

Deep neural networks for mostly zero valued data

I have some data with around 1000 features. Problem is most of the features are 0. In each row usually around 100 features have values and rest of the features...

Asked on 03/01/2021 by user1670773

3 answer

Averaging CNN perform worse than boosting

I'm trying to solve Quora Question Pairs with model stacking. My first layers are:CNN trained to predict the same target as whole model should"Magic features" like question...

Asked on 03/01/2021 by Yuriy Nazarov

0 answer

PCA and k-means for categorical variables?

I have a clustering task at hand. The data that I have contains only categorical variables. So, k-modes seemed like the best option. But I am not sure what are...

Asked on 03/01/2021 by akashdubey

1 answer

BIO tagging software

I would like to label character data with BIO tags as part of an active learning process on unlabelled data. I am assuming there are open source GUI tools available...

Asked on 03/01/2021 by David Waterworth

2 answer

Feature Importance without Random Forest Feature Importances

Is their an intuitive way of finding feature importances without just using the random forest feature importances method? I have a binary logistic regression problem where I have binary features...

Asked on 03/01/2021

2 answer

0.1 accuracy on MNIST fashion dataset following official Tensorflow/Keras tutorial

My goal is to classify products pictures into categories such as dress, sandals, etc. I am using the MNIST fashion dataset, following this official tutorial word-per-word: https://www.tensorflow.org/tutorials/keras/basic_classification so...

Asked on 03/01/2021 by Nicolas Raoul

3 answer

Which machine learning problem is this?

I am not able to figure out what kind of machine learning is this: Training set: consists of sentences with object labels for object phrasesExample: "This is a black...

Asked on 03/01/2021

3 answer

Row-wise Jacobian with pytorch

Suppose I have $f:mathbb{R}^{d_i}tomathbb{R}^{d_o}$.Let $X in mathbb{R}^{n times d_i}$ and I apply $f$ to each row of $X$, obtaining $Y = f(X) in mathbb{R}^{n...

Asked on 03/01/2021

1 answer

What is the difference between fasttext and DANs in document classification?

I came across two interesting papers that describe promising approaches for document classification using word embedding. 1. The fasttext algorithm Described in the paper Bag of Tricks for Efficient...

Asked on 02/28/2021 by user1043144

1 answer

approach for predicting machine failure using maintenance history

I have been struggling with this problem for a while now and I finally decided to post a question here to get some help. The problem i'm trying to solve...

Asked on 02/28/2021 by Connor Abraham

1 answer

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