lda | topic modeling in Python | Topic Modeling library

by davidmcclure Python Version: Current License: No License

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kandi X-RAY | lda Summary

lda is a Python library typically used in Artificial Intelligence, Topic Modeling applications. lda has no bugs, it has no vulnerabilities and it has high support. However lda build file is not available. You can download it from GitHub.

This project implements Gibbs sampling inference to LDA(Latent Dirichlet Allocation). @article{heinrich2005parameter, title={Parameter estimation for text analysis}, author={Heinrich, G.}, journal={Web: year={2005} }.

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Support

lda has a highly active ecosystem.

It has 19 star(s) with 37 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

There are 2 open issues and 0 have been closed. On average issues are closed in 2116 days. There are no pull requests.

It has a positive sentiment in the developer community.

The latest version of lda is current.

Quality

lda has 0 bugs and 0 code smells.

Security

lda has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

lda code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

lda does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

lda releases are not available. You will need to build from source code and install.

lda has no build file. You will be need to create the build yourself to build the component from source.

lda saves you 72 person hours of effort in developing the same functionality from scratch.

It has 186 lines of code, 12 functions and 3 files.

It has high code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed lda and discovered the below as its top functions. This is intended to give you an instant insight into lda implemented functionality, and help decide if they suit your requirements.

Compute the Leibbs sampling algorithm .
Generate a corpus .
Print the topic - word distribution .
Print the document - topic distribution distribution .
Split the file into stop words .
Build the vocabulary .
Return the index of the distribution in the given vec .
Clean a word .
Dirichlet distribution .

Get all kandi verified functions for this library.

lda Key Features

No Key Features are available at this moment for lda.

lda Examples and Code Snippets

No Code Snippets are available at this moment for lda.

Community Discussions

Trending Discussions on lda

LMC program that will produce the sum of the median and twice the smallest of 3 inputs

Eigen decomposition of Hermitian Matrix using CuSolver does not match the result with matlab

R not displaying Arabic text correctly

Creating nested columns in python dataframe

"In call to DSYEV, an array temporary was created for argument" in ifort but the related dimension is only 1

python - matplot lib sub-plot grid: where to insert row/column arguments

Kernel LDA in Julia. (trouble in package installing)

SageMaker Hyperparameter Tuning for LDA, clarifying feature_dim

Sklearn - toggling tf-idf to register two-word phrases

Caret train function for muliple data frames as function

QUESTION

LMC program that will produce the sum of the median and twice the smallest of 3 inputs

Asked 2022-Apr-09 at 22:05

so I've been tasked to create a little-man-machine program that will take 3 distinct inputs and produce the result of the median + 2 * the smallest number.

So far I've managed to produce an output that produces the smallest number of the 3 inputs. How would I go about finding the median and then adding it to 2 * the smallest number?

...

ANSWER

Answered 2022-Apr-09 at 22:05

Your code correctly outputs the minimum value, but:

It destroys the other input values, which you still need
There is some code that never executes (lines 25-27)
The result of the subtraction at line 23 is not used
The STA that happens at line 29 is useless

I would suggest to first sort the three input values, and then it is easy to apply the "formula" that is requested.

Also: use labels in your program and define the addresses of your variables with DAT codes. Most LMC simulators support labels and it makes the code more readable.

Here is how you could do it. I didn't add comments to the code, as the simulator that you use does not support comments (a pity!), but here is how it works:

Name the inputs a, b and c (see the DAT lines at the end)
Compare a with b
If a > b then swap their values using a temp variable
At continue compare b with c
If b > c then:
- Forget about what is in b and put the value of c there
- Compare that value (b which is also c) with a
- If b < a then swap a and b with the help of c (a copy of b)
Finally perform the calculation a+a+b and output it.

Here is the snippet -- click Run code snippet to activate the inline LMC simulator and control it with the input-box and buttons that will appear:

Source https://stackoverflow.com/questions/71793939

QUESTION

Eigen decomposition of Hermitian Matrix using CuSolver does not match the result with matlab

Asked 2022-Mar-04 at 16:07

I am following the example of eigen decomposition from here, https://github.com/NVIDIA/CUDALibrarySamples/blob/master/cuSOLVER/syevd/cusolver_syevd_example.cu

I need to do it for Hermatian complex matrix. The problem is the eigen vector is not matching at all with the result with Matlab result.

Does anyone have any idea about it why this mismatch is happening?

I have also tried cusolverdn svd method to get eigen values and vector that is giving another result.

My code is here for convenience,

...

ANSWER

Answered 2022-Mar-04 at 16:07

Please follow the post for the clear answer, https://forums.developer.nvidia.com/t/eigen-decomposition-of-hermitian-matrix-using-cusolver-does-not-match-the-result-with-matlab/204157

The theory tells, A*V-lamda*V=0 should satisfy, however it might not be perfect zero. My thinking was it will very very close to zero or e-14 somethng like this. If the equation gives a value close to zero then it is acceptable.

There are different algorithms for solving eigen decomposition, like Jacobi algorithm, Cholesky factorization... The program I provided in my post uses the function cusolverDnCheevd which is based on LAPACK. LAPACK doc tells that it uses divide and conquer algorithm to solve Hermitian matrix. Here is the link, http://www.netlib.org/lapack/explore-html/d9/de3/group__complex_h_eeigen_ga6084b0819f9642f0db26257e8a3ebd42.html#ga6084b0819f9642f0db26257e8a3ebd42

Source https://stackoverflow.com/questions/71174682

QUESTION

R not displaying Arabic text correctly

Asked 2022-Feb-24 at 02:07

I am running a simple unsupervised learning model on an Arabic text corpus, and the model is running well. However, I am having an issue with the plots that aren't working well as they are printing the Arabic characters from left to right, rather than the correct format of right to left.

Here are the packages I am using:

...

ANSWER

Answered 2022-Feb-24 at 02:07

If you're using old a version of R that is 3.2 or Less then those versions does not handle Unicode in proper way. Try to install latest version of R from https://cran.r-project.org/ and if required then install all packages.

Source https://stackoverflow.com/questions/70989953

QUESTION

Creating nested columns in python dataframe

Asked 2022-Feb-20 at 15:56

I have 3 columns namely Models(should be taken as index), Accuracy without normalization, Accuracy with normalization (zscore, minmax, maxabs, robust) and these are required to be created as:

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ANSWER

Answered 2022-Feb-20 at 13:01

There's a dirty way to do this, I'll write about it till someone answers with a better idea. Here we go:

Source https://stackoverflow.com/questions/71193085

QUESTION

"In call to DSYEV, an array temporary was created for argument" in ifort but the related dimension is only 1

Asked 2022-Feb-15 at 23:53

For the following Fortran code (modified from dsyev in fortran 90)

...

ANSWER

Answered 2022-Feb-15 at 23:53

Let's consider a much simpler program to look at what's going on:

Source https://stackoverflow.com/questions/71129629

QUESTION

python - matplot lib sub-plot grid: where to insert row/column arguments

Asked 2022-Jan-30 at 08:00

I'm trying to display the topic extraction results of an LDA text analysis across several data sets in the form of a matplotlib subplot.

Here's where I'm at:

I think my issue is my unfamiliarity with matplotlib. I have done all my number crunching ahead of time so that I can focus on how to plot the data:

...

ANSWER

Answered 2022-Jan-24 at 07:45

You should create the figure first:

Source https://stackoverflow.com/questions/70830018

QUESTION

Kernel LDA in Julia. (trouble in package installing)

Asked 2022-Jan-24 at 17:32

I want to use Kernel LDA in julia 1.6.1. I found the repo. https://github.com/remusao/LDA.jl

I read READEME.md, and I typed

...

ANSWER

Answered 2022-Jan-24 at 17:32

The package you have linked, https://github.com/remusao/LDA.jl, has had no commits in over eight years. Among other things, it lacks a Project.toml file, which is necessary for installation in modern Julia.

Since Julia was only about one year old and at version 0.2 back in 2013 when this package last saw maintenance, the language has also changed drastically in this time such that the code in this package would likely no longer function even if you could get it to install.

If you can't find any alternative to this package for your work, forking it and upgrading it to work with modern Julia would be a nice intermediate-beginner project.

Source https://stackoverflow.com/questions/70837786

QUESTION

SageMaker Hyperparameter Tuning for LDA, clarifying feature_dim

Asked 2022-Jan-21 at 13:58

I'm trying to run a HyperparameterTuner on an Estimator for an LDA model in a SageMaker notebook using mxnet but am running into errors related to the feature_dim hyperparameter in my code. I believe this is related to the differing dimensions of the train and test datasets but I'm not 100% certain if this is the case or how to fix it.

Estimator Code

[note that I'm setting the feature_dim to the training dataset's dimensions]

...

ANSWER

Answered 2022-Jan-21 at 13:58

I have resolved this issue. My problem was that I was splitting the data into test and train BEFORE converting the data into doc-term matrices, which resulted in test and train datasets of different dimensionality, which threw off SageMaker's algorithm. Once I convereted all of the input data into a doc-term matrix, and THEN split it into test and train, the hyperparameter optimization operation completed.

Source https://stackoverflow.com/questions/70779880

QUESTION

Sklearn - toggling tf-idf to register two-word phrases

Asked 2022-Jan-20 at 06:52

I'm experimenting with the text analysis tools in sklearn, namely the LDA topic extraction algorithm seen here.

I've tried feeding it other data sets and in some cases I think I would get better topic extraction results if the vector representation of the tf-idf 'features' could allow for phrases.

As an easy example:

I often get top word associations like:

income
net
asset
fixed
wealth
fiscal

Which is understandable, but I think that I won't get the granularity I need for a useful topic extraction unless the TfidfVectorizer() or some other parameter can be tweaked such that I get phrases. Ideally, I want:

fixed income
asset management
wealth management
net income
fiscal income

To make things simple, I'm imagining I supply the algorithm with a white list of tolerable 2-word phrases. It would count only those phrases as unique while applying normal tf-idf weighting to all other word entries throughout the corpus.

Question

The documentation for TfidfVectorizer() doesn't seem to support this, but I'd imagine this is a fairly common need in practice -- so how do practitioners go about it?

...

ANSWER

Answered 2022-Jan-20 at 06:52

The default configuration TfidfVectorizer is using an ngram_range=(1,1), this means that it will only use unigram (single word).

You can change this parameter to ngram_range(1,2) in order to retrieve bigram as well as unigram and if your bigrams are sufficiently represented they will be extracted as well.

See example below:

Source https://stackoverflow.com/questions/70780593

QUESTION

Caret train function for muliple data frames as function

Asked 2022-Jan-14 at 11:43

there has been a similar question to mine 6 years+ ago and it hasn't been solve (R -- Can I apply the train function in caret to a list of data frames?) This is why I am bringing up this topic again.

I'm writing my own functions for my big R project at the moment and I'm wondering if there is an opportunity to sum up the model training function train() of the pakage caret for different dataframes with different predictors. My function should look like this:

...

ANSWER

Answered 2022-Jan-14 at 11:43

By writing predictor_iris <- "Species", you are basically saving a string object in predictor_iris. Thus, when you run lda_ex, I guess you incur in some error concerning the formula object in train(), since you are trying to predict a string using vectors of covariates.

Indeed, I tried the following toy example:

Source https://stackoverflow.com/questions/70709618

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install lda

You can download it from GitHub.
You can use lda like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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