Questions tagged [data-generation]

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104votes
16answers
90kviews

Tools for Generating Mock Data? [closed]

I'm looking for recommendations of a good, free tool for generating sample data for the purpose of loading into test databases. By analogy, something that produces "lorem ipsum" text for any RDBMS. ...
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48votes
4answers
41kviews

Does a fake data generator exists in Java? [closed]

I would like to know if a fake data generator exists for Java. In Perl exists Data::Faker and there's a port to Ruby called faker, for JavaScript faker.js. Someone know about a fake data generator for ...
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44votes
9answers
58kviews

Data generators for SQL server? [closed]

I would like to receive suggestions on the data generators that are available, for SQL server. If posting a response, please provide any features that you think are important. I have never used a ...
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  • 7,090
28votes
5answers
9kviews

How do I generate text matching a regular expression from a regular expression?

Yup, you read that right. I needs something that is capable of generating random text from a regular expression. So the text should be random, but be matched by the regular expression. It seems it ...
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20votes
1answer
7kviews

Understanding `width_shift_range` and `height_shift_range` arguments in Keras's ImageDataGenerator class

The Keras documentation of ImageDataGenerator class says— width_shift_range: Float, 1-D array-like or int - float: fraction of total width, if < 1, or pixels if >= 1. - 1-D array-like: random ...
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  • 2,034
10votes
3answers
5kviews

How knowing number of images in flow_from_directory

We can generate image dataset using ImageDataGenerator with flow_from_directory method. train_datagen = ImageDataGenerator( rescale=1./255, #scale images from integers 0-255 to floats 0-1. ...
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  • 536
10votes
5answers
2kviews

How to generate Bad Random Numbers

I'm sure the opposite has been asked many times but I couldn't find any answers on how to generate bad random numbers. I want to write a small program for cluster analysis and want to generate some ...
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  • 1,748
9votes
6answers
15kviews

Java 8 Stream IllegalStateException: Stream has already been operated on or closed

I'm trying to generate Order instances using the Stream API. I have a factory function that creates the order, and a DoubleStream is used to initialize the amount of the order. private ...
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  • 34.5k
8votes
3answers
1kviews

Is there a lib to generate data according to a regexp? (Python or other)

Given a regexp, I would like to generate random data x number of time to test something. e.g. >>> print generate_date('\d{2,3}') 13 >>> print generate_date('\d{2,3}') 422 Of ...
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  • 546k
8votes
3answers
2kviews

Generate data for MySQL tables

Is there a program like Red Gate's Data Generator for MS SQL Server that generates data based on your database schema for MySQL? Other alternatives (easy) to accomplish the objective very much ...
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  • 27.4k
7votes
3answers
4kviews

How to generate bivariate data of different shapes (e.g., square, circle, rectangle) with outliers?

I am currently looking for some tool that would generate datasets of different shapes like square, circle, rectangle, etc. with outliers for cluster analysis. Can any one of you recommend a good ...
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  • 545
7votes
4answers
10kviews

Can't find model 'en_core_web_md'. It doesn't seem to be a shortcut link, a Python package or a valid path to a data directory

I have installed spacy and downloaded en_core_web_sm with: pip install spacy python -m spacy download en_core_web_sm Also tried pip3 install https://github.com/explosion/spacy-models/releases/download/...
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7votes
1answer
734views

What alternatives exist for Data Generation Plans for Visual Studio Express users?

I'm wondering if there is a good option for those of us using Express (or even Professional) editions without having to go outside the Visual Studio project (i.e. writing a ruby/perl/etc script to ...
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  • 3,503
6votes
2answers
1kviews

Creating a Data Generation Plan that Includes Correct Lookup Table Values

I'm just getting started with Visual Studio Database projects and loving the data generation plans I can create with it. However, in one of my projects I need to populate a lookup table with specific ...
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6votes
2answers
242views

How do you statically generate float data at compile time?

Given I want to perform filtering on some data, how can I avoid generating this data at runtime, but maintain the flexibility of changing sizes and data distribution of these filters, while also ...
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