lda | Extracting Hidden Topics from Texts using LDA Model | Topic Modeling library

 by   kjahan Java Version: Current License: No License

kandi X-RAY | lda Summary

kandi X-RAY | lda Summary

lda is a Java library typically used in Artificial Intelligence, Topic Modeling applications. lda has no bugs, it has no vulnerabilities, it has build file available and it has low support. You can download it from GitHub.

LDA is a Maven project. If you use Eclipse with Maven plugin, you need to import LDA as a Maven project and build it from there.
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            kandi-support Support

              lda has a low active ecosystem.
              It has 4 star(s) with 2 fork(s). There are 3 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              lda has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of lda is current.

            kandi-Quality Quality

              lda has no bugs reported.

            kandi-Security Security

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

            kandi-License License

              lda does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              OutlinedDot
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              lda releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.

            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.
            • Runs a RunLDA example
            • Creates a detailed description of the LDA documentation
            • Runs the gaussian sampler
            • Prints top words from a topic distribution
            • Reset matrix
            • Run LDA
            • Returns the probability of a given word
            • Removes spaces from the raw text
            • Remove stop words
            • Remove punctuation
            • Returns true if the word is in the stop words
            • Runs a basic LDAT test
            • Build the punc map
            • Prints the matrix to stdout
            • Returns the probability of a topic
            • Parses the stop words file
            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

            QUESTION

            LDAtuning Package
            Asked 2021-Jun-15 at 11:13

            I try to find the optimal number of topics in the LDA algorithm for my database. For this purpose I try to use the package "ldatuning". After the implementation of the LDA algorithm with the "gibbs" method I try to use the function:

            Griffiths2004(models, control) The arguments should be: models An object of class "LDA control A named list of the control parameters for estimation or an object of class "LDAcontrol".

            I used it like that:

            ...

            ANSWER

            Answered 2021-Jun-15 at 11:13

            The problem probably lies in how you pass the control parameter list to the Griffiths2004 function.

            In the Griffiths2004 function, the parameters are addressed as in a list using control$param. However, lda_5@control returns an S4 object where the parameters should be addressed with control@param. (An S4 object is an advanced class in R, but the only important difference for this application is, that we address objects in these lists with @ instead of $)

            You can see that lda@control is an S4 object when calling it:

            Source https://stackoverflow.com/questions/67983441

            QUESTION

            6502 assembly: carry result in 16bit subtraction
            Asked 2021-Jun-14 at 07:44

            I have recovered an old 6502 emulator I did years ago to implement some new features. During testing I discovered something wrong, surely due to an error in my implementation.
            I have to loop through a 16 bit subtraction until the result is negative: quite simple, no? Here is an example:

            ...

            ANSWER

            Answered 2021-May-25 at 12:22

            loop through a 16 bit subtraction until the result is negative

            "Branch" to Label if result is >0,

            Do you see that these descriptions contradict each other?
            The 1st one continues on 0, the 2nd one stops on 0.
            Only you can decide which one is correct!

            From a comment:

            This code is part of a Bin to Ascii conversion, made by power of ten subtraction. The bin value could be >$8000, so it is 'negative' but this does not matter. In the first iteration I sub 10000 each cycle until the result is 'below 0', then I restore the previous value and continue with the remainder. The problem is how to detect the 'below 0' condition as said in the post

            Do ... Loop While GE 0

            Next example subtracts 10000 ($2710) from the unsigned word stored at zero page address $90. The low byte is at $90, the high byte is at $91 (little endian).

            Source https://stackoverflow.com/questions/67663261

            QUESTION

            LAPACKE C++ linking error. Unable to find function
            Asked 2021-Jun-12 at 23:53

            I'm looking to use the LAPACKE library to make C/C++ calls to the LAPACK library. On multiple devices, I have tried to compile a simple program, but it appears LAPACKE is not linking correctly.

            Here is my code, slightly modified from this example:

            ...

            ANSWER

            Answered 2021-Jun-12 at 23:53

            I am compiling with: g++ -lblas -llapack -llapacke -I /usr/include main.cpp

            That command line is wrong. Do this instead:

            Source https://stackoverflow.com/questions/67943040

            QUESTION

            Genism Module attribute error for wrappers
            Asked 2021-Jun-09 at 16:07

            I am going to find the optimal number of topics for LDA. To do this, I used GENSIM as follows :

            ...

            ANSWER

            Answered 2021-Jun-09 at 16:07

            The latest major Gensim release, 4.0, removed the wrappers of other library algorithms. Per the "Migrating from Gensim 3.x to 4" wiki page:

            15. Removed third party wrappers

            These wrappers of 3rd party libraries required too much effort. There were no volunteers to maintain and support them properly in Gensim.

            If your work depends on any of the modules below, feel free to copy it out of Gensim 3.8.3 (the last release where they appear), and extend & maintain the wrapper yourself.

            The removed submodules are:

            Source https://stackoverflow.com/questions/67095698

            QUESTION

            Error in LDA(cdes, k = K, method = "Gibbs", control = list(verbose = 25L, : Each row of the input matrix needs to contain at least one non-zero entry
            Asked 2021-Jun-04 at 06:53

            I have a big dataset of almost 90 columns and about 200k observations. One of the column contains descriptions, so it's only text. However, i have like 100 descriptions that are NAs.

            I tried the code of Pablo Barbera from GitHub concerning Topic Models because i need it.

            OUTPUT

            ...

            ANSWER

            Answered 2021-Jun-04 at 06:53

            It looks like some of your documents are empty, in the sense that they contain no counts of any feature.

            You can remove them with:

            Source https://stackoverflow.com/questions/67825501

            QUESTION

            Printing the results of an increasing cumulative loop as a single data frame in R
            Asked 2021-Jun-04 at 01:03

            I've been running a least discriminant analysis on the results of a principal components analysis in R, and I've been calculating the appropriate number of PCs to use based on the minimum number of PCs that represent a certain threshhold of cumulative variation that return the highest reclassification rate, following the methodology in some previous studies.

            I have been calculating the reclassification rates for the various cumulative numbers of PCs using a loop, but wish to print it as a data.frame for an RMarkdown report. This is the code I have been using.

            ...

            ANSWER

            Answered 2021-Jun-04 at 01:03

            We can initialize a dataset and then rbind instead of printing

            Source https://stackoverflow.com/questions/67830204

            QUESTION

            How does the number of Gibbs sampling iterations impacts Latent Dirichlet Allocation?
            Asked 2021-Jun-02 at 12:45

            The documentation of MALLET mentions following:

            ...

            ANSWER

            Answered 2021-Jun-02 at 12:45

            The 1000 iteration setting is designed to be a safe number for most collection sizes, and also to communicate "this is a large, round number, so don't think it's very precise". It's likely that smaller numbers will be fine. I once ran a model for 1000000 iterations, and fully half the token assignments never changed from the 1000 iteration model.

            Could you be more specific about the cross validation results? Was it that different folds had different MRRs, which were individually stable over iteration counts? Or that individual fold MRRs varied by iteration count, but they balanced out in the overall mean? It's not unusual for different folds to have different "difficulty". Fixing the random seed also wouldn't make a difference if the data is different.

            Source https://stackoverflow.com/questions/67786782

            QUESTION

            Pandas: Query DF based on number of instances taken place with conditions
            Asked 2021-May-29 at 23:00

            I have a df containing AirBnB data. There is one question I am stuck trying to answer. The column of interest, host_listings_count contains data of the number of listings each host has.

            This is my first attempt querying using Pandas. I would like to know:

            The number of hosts that offer 2 or more properties. my attempt df['host_listings_count'].value_counts().loc[lambda x:x>1]

            ...

            ANSWER

            Answered 2021-May-29 at 23:00

            What you can do is first calculate all the unique values over your host_listings_count column and exclude the ones you don't want. In your case that's only filtering for more than 1 property. You can then sort this list and use it as index on your value_counts output like so:

            Source https://stackoverflow.com/questions/67756325

            QUESTION

            Which hyperparameter optimization technique is used in Mallet for LDA?
            Asked 2021-May-21 at 13:47

            I am wondering which technique is used to learn the Dirichlet priors in Mallet's LDA implementation.

            Chapter 2 of Hanna Wallach's Ph.D. thesis gives a great overview and a valuable evaluation of existing and new techniques to learn the Dirichlet priors from the data.

            Tom Minka initially provided his famous fixed-point iteration approach, however without any evaluation or recommendations.

            Furthermore, Jonathan Chuang did some comparisons between previously proposed methods, including the Newton−Raphson method.

            LiangJie Hong says the following in his blog:

            A typical approach is to utilize Monte-Carlo EM approach where E-step is approximated by Gibbs sampling while M-step is to perform a gradient-based optimization approach to optimize Dirichlet parameters. Such approach is implemented in Mallet package.

            Mallet mentions the Minka's fixed-point iterations with and without histograms.

            However, the method that is actually used simply states:

            Learn Dirichlet parameters using frequency histograms

            Could someone provide any reference that describes the used technique?

            ...

            ANSWER

            Answered 2021-May-21 at 13:47

            It uses the fixed point iteration. The frequency histograms method is just an efficient way to calculate it. They provide an algebraically equivalent way to do the exact same computation. The update function consists of a sum over a large number of Digamma functions. This function by itself is difficult to compute, but the difference between two Digamma functions (where the arguments differ by an integer) is relatively easy to compute, and even better, it "telescopes" so that the answer to Digamma(a + n) - Digamma(a) is one operation away from the answer to Digamma(a + n + 1) - Digamma(a). If you work through the histogram of counts from 1 to the max, adding up the number of times you saw a count of n at each step, the calculation becomes extremely fast. Initially, we were worried that hyperparameter optimization would take so long that no one would do it. With this trick it's so fast it's not really significant compared to the Gibbs sampling.

            Source https://stackoverflow.com/questions/67622671

            QUESTION

            C64 assembly store memory address and increase it
            Asked 2021-May-19 at 02:08

            I learn now KickAss assembler for C64, but i'm never learnd any asm or 8 bit computing before. I want to print big ascii banner (numbers). I want to store the "$0400" address in the memory and when i'm increased the line number i need to increase it by 36 (because the sceen is 40 char width so i want to jump ti next line), but my problem is this is a 2 byte number so i can't just add to it. This demo is works "fine" except the line increasing because i dont know that.

            So what i'm need:

            1. How can i store a 2 byte memory address in a memory?
            2. How can i increase the memory address and store back (2 byte)?
            3. How can i store a value to the new address (2 byte and index registers is just one)?

            Thx a lot guys!

            ...

            ANSWER

            Answered 2021-Apr-11 at 16:28
            clc
            lda LowByte    ; Load the lower byte
            adc #LowValue  ; Add the desired value
            sta LowByte    ; Write back the lowbyte
            lda HiByte     ; No load hi byte
            adc #HiValue   ; Add the value.
            sta HiByte
            

            Source https://stackoverflow.com/questions/67046350

            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 Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the lda component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

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            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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