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Data Science : Recent Questions and Answers (Page 76)

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

String similarity algorithms for string containment (rather than string equality)

I saw that there are a lot of string similarity algorithms to whether two strings are the same. I have a slightly different problem - I get two strings...

Asked on 07/17/2021 by Gilad Deutsch

1 answer

Applying a robust scaler to column 0 to 6 of my data frame?

I have a dataframe X and would like to scale columns 0 to 6 using robust scaler, how do i achieve this please? the following code only returns the scaled...

Asked on 07/17/2021 by Ifeakachukwu okwuazu

1 answer

How many channels do ultrasound images have?

I have some ultrasound images. When I read them using cv.imread and check their shape or check them with ndim, it shows 3 channels:im = cv.imread(data_path+'a1.jpg')print(im.shape)im = np.array(im)print(im.ndim)the output...

Asked on 07/16/2021

1 answer

Question on ANOVA and Correlation/Association

I've been working on examining statistical relationships between variable:Pearsons, Spearman's for continuous variablesKendall's Tau, Cramer's V for ordinal/nominal variables.I know there's many more ways. Recently I read about ANOVA and...

Asked on 07/16/2021

1 answer

One Hot Encoding vs Word Embedding - When to choose one or another?

A colleague of mine is having an interesting situation, he has quite a large set of possibilities for a defined categorical feature (+/- 300 different values) The usual data science...

Asked on 07/16/2021

2 answer

How are treemaps hierarchical?

According to various sources on the internet, treemaps are a way to visualize hierarchical, tree-like data structures, for example the tree generated by hierarchical clustering. I looked at a lot...

Asked on 07/16/2021 by PejoPhylo

1 answer

Neural network cost is constant never changing during training

I am trying to build a binary classifier to predict a pulsar star with Single Hidden layer Neural Network. But the cost on training dataset after almost...

Asked on 07/16/2021 by Chinmaya B

0 answer

Can CNNs detect features of different images?

In lecture, we talked about “parameter sharing” as a benefit of using convolutional networks. Which of the following statements about parameter sharing in ConvNets are true? (Check all that apply.)It...

Asked on 07/16/2021 by Z Oscar

2 answer

Clustering of unlabeled ship images

I want to create a ship detection classifier from a dataset that is formed by 4000 photos(3072*2048). But the dataset that i currently have is not labeled so...

Asked on 07/16/2021 by scoute21

3 answer

Can RNN be replaced with non-recurrent classifier for Sequence Classification problem?

Setup:We have sequence of events that are not evenly spaced (not a time series). Length of the sequence is constant. Goal:Predict class of the event that is most...

Asked on 07/16/2021 by Deil

1 answer

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