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Data Science : Recent Questions and Answers (Page 106)

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

How to prepare masks for multiclass semantic segmentation?

It's very straightforward for binary semantic segmentation: black color (0s) is responsible for background, whereas white color (1s) is responsible for objects of interest. ...

Asked on 06/14/2021 by SagRU

1 answer

IterativeImputer Evaluation

I am having a hard time evaluating my model of imputation. I used an iterative imputer model to fill in the missing values in all four columns. For the model...

Asked on 06/14/2021 by nisrine hammout

1 answer

How do subsequent convolution layers work?

This question boils down to "how do convolution layers exactly work. Suppose I have an $n times m$ greyscale image. So the image has one channel.In the first layer,...

Asked on 06/14/2021

5 answer

Recover a integer valued function with *-learning

I have the following problem. From a technical model we have a function $f(n,p)$ approximating its runtime. The function $f$ which maps $$ f: mathbb{N} times...

Asked on 06/14/2021 by M.K. aka Grisu

1 answer

Simple LSTM model quickly learns and overfits

I am training a multi-class LSTM classifier on approximatively 700k documents of 40 words. My classes are very umbalanced, some have 2 or 3 samples while the biggest class has...

Asked on 06/14/2021 by throwawayz932

0 answer

Mapping between original feature space and an interpretable feature space

I'm reading the following really interesting paper https://arxiv.org/pdf/1602.04938.pdf on local interpretable model explanations on page 3 however particularly section 3.3 Sampling for Local Exploration they mention...

Asked on 06/13/2021 by iaaml

1 answer

Keras: Very high loss for Autoencoder

I am trying to implement an autoencoder for prediction of multiple labels using Keras. This is a snippet:input = Input(shape=(768,))hidden1 = Dense(512, activation='relu')(input)compressed = Dense(256, activation='relu', activity_regularizer=l1(10e-6))(hidden1) hidden2 =...

Asked on 06/13/2021 by Animeartist

1 answer

How to get pixel location in after rotating the image?

I'm trying to rotate some images with some boundary boxes, but I couldn't get the new bb. So if I have an image of 100x70 and I have a pixel...

Asked on 06/13/2021

1 answer

Improve results using user input

I've developed a tool that retrieve the closest expressions from a database based on what the user typed. (using word embedding - a comparison is made between each expression from...

Asked on 06/13/2021

1 answer

How to filter data samples which do not improve classifier?

I have a text dataset with noisy labels and an unbalanced shape. There are various ways to find features which do not drive improvement in some metric, and help to...

Asked on 06/13/2021

0 answer

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