lean | Lucene Tools for Text Analytics | Natural Language Processing library

 by   smallk HTML Version: Current License: No License

kandi X-RAY | lean Summary

kandi X-RAY | lean Summary

lean is a HTML library typically used in Artificial Intelligence, Natural Language Processing applications. lean has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

LEAN is a set of Java tools for generating term-frequency matrices from text documents. The LEAN tools are designed for compatibility with the GTRI/GA Tech SmallK software distribution, which consumes term-frequency matrices and performs hierarchical and flat clustering. The LEAN software distribution currently consists of two tools: DocIndexer and LuceneToMtx. The DocIndexer application ingests documents in various formats and encodings, analyzes them with a user-configurable Lucene analyzer, and generates a Lucene inverted index. The LuceneToMtx application reads the index, performs optional filtering on the terms, and generates a term-frequency matrix with matching dictionary and document files. ####Key Features of LEAN. Lucene: Lucene is a search engine library with fast indexing capabilities and many readily-available Natural Language Processing extensions. Scalability: Lucene is the search engine used to power Apache Solr, a highly reliable, scalable and fault tolerant search platform providing distributed indexing and replication. While LEAN itself does not leverage Solr for these features currently, the ability to do so is available if the scalability requirements of a particular application are substantial. Performance: Many other software options for text processing use less performant languages (like MATLAB or Python) or persist large portions of the documents being indexed in memory (WEKA). As each document is processed in LEAN, Lucene writes that document's index to the filesystem, avoiding the need to allocate enormous amounts of resources to the process. In our experiments, we have found LEAN to be 2x-4x faster than our other standard tools. Extensibility: Lucene is used extensively in appliations all over the world and is maintained by a large community of developers. As a result, there is ample documentation for how to use Lucene for many different use-cases. There are also many extensions available for Lucene that provide specific functionality, particularly for NLP applications. ####Other Software Options Other software packages exist in various languages that perform similar functionality. However, these are either based on programming paradigms that are not scalable or require custom implementations of new features. TMG: Text to Matrix Generator (TMG) is a MATLAB(R) toolbox that can be used for various tasks in text mining. WEKA: Machine learning software in Java. gensim: Python package for topic modeling. JFreq: Word frequency matrix generation in Java. ####Supported Input Formats LEAN uses Apache Tika to ingest documents; Tika detects and extracts metadata and text from over a thousand different file types (list available here). If LEAN encounters a document that Tika cannot parse, it will print a message to the console and skip this file, continuing through the rest of the corpus.
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            kandi-support Support

              lean has a low active ecosystem.
              It has 5 star(s) with 3 fork(s). There are 7 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              lean has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of lean is current.

            kandi-Quality Quality

              lean has no bugs reported.

            kandi-Security Security

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

            kandi-License License

              lean 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

              lean releases are not available. You will need to build from source code and install.
              Installation instructions, examples and code snippets are available.

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            lean Key Features

            No Key Features are available at this moment for lean.

            lean Examples and Code Snippets

            No Code Snippets are available at this moment for lean.

            Community Discussions

            QUESTION

            Any way to censor Treeview Data Display?
            Asked 2021-Jun-14 at 17:13

            I am able to use SQLite3 as the database (DB) and get Treeview to display data from the DB. However, I was wondering whether Treeview has any functionality to censor the first few characters in a certain column for all entries?

            Here is the lean code:

            ...

            ANSWER

            Answered 2021-Jun-14 at 17:13

            You can make the substitution in the SQL query itself, by combining your desired prefix with a substring of the column, taken from the sixth character to the end.

            Here's a pure Sqlite example:

            Source https://stackoverflow.com/questions/67835467

            QUESTION

            Why use a constructor over protected variables?
            Asked 2021-Jun-12 at 04:32

            I'm building some classes within unity to define the mechanics individually, and transition between each for easier and cleaner code.

            What I wanna know, is when should I be using a constructor to pass variables around, and when to use protected variables. What are the pros and cons of each, and what should I know about them? Also what should I lean towards, like what's practical?

            Previously I'd pass these variables into the PlayerState constructor, then in my classes that extend from my PlayerState would follow suit. But if they're protected variables I don't need to pass them into the constructor to access them, and I was wondering what should I do? using UnityEngine;

            The new way I'm doing it:

            ...

            ANSWER

            Answered 2021-Jun-12 at 04:32

            This is just a question related to OOP. Unity is not needed to be considered.

            A constructor let you create an object instance and initialize the members of the object at the same time. If there are some immutable members (i.e. they will never be changed after construction), you may need to initialize them in constructors, and you may add the keyword readonly to the members. If you don't need to initialize any member with passing parameter(s) when the instance is created, there is no need to have a custom constructor (unless you want to hide the default constructor).

            The access modifier protected makes the member accessible only in code in the same class, or in a class that is derived from that class. If you need to access the member in other places, you still need do it via public/internal methods such as setters and getters, or make it public/internal.

            In your case, I think a constructor is needed to initialize the members such as player when a PlayerState instance is created.

            Source https://stackoverflow.com/questions/67945246

            QUESTION

            Noda time representation for close/open that is an entire day (24 hour period)
            Asked 2021-Jun-08 at 03:07

            I am parsing some interestingly formatted data from https://raw.githubusercontent.com/QuantConnect/Lean/master/Data/market-hours/market-hours-database.json

            It contains a snippet (removing some days) as below:

            ...

            ANSWER

            Answered 2021-May-25 at 05:29

            Is there a preferred way to deal with a LocalTime that represents a 24 hours span?

            It's worth taking a step back and separating different concepts very carefully and being precise. A LocalTime doesn't represent a 24 hour span - it's just a time of day. Two LocalTime values could effectively represent a 24 hour span without reference to a specific date, yes.

            If you can possibly change your JSON to use 00:00:00, and then treat a "start==end" situation as being the full day, that's what I'd do. That does mean, however, that you can never represent an empty period.

            Now, in terms of whether you should use a start and duration... that really depends on what you're trying to model. Are you trying to model a start time and an end time, or a start time and a duration? So far you've referred to the whole day as "a 24 hour span" but that's not always the case, if you're dealing with time zones that have UTC offset transitions (e.g. due to daylight saving time).

            Transitions already cause potential issues with local intervals like this - if you're working on a date where the local time "falls back" from 2am to 1am, and you've got a local time period of (say) 00:30 to 01:30, then logically that will be "true" for an hour and a half of the day:

            • 00:00-00:30: False
            • 00:30-01:30 (first time): True
            • 01:30-02:00 (first time): False
            • 01:00-01:30 (second time): True
            • 01:30-02:00 (second time): False
            • 02:00-00:00 (next day): False

            We don't really know what you're doing with the periods, but that's the sort of thing you need to be considering... likewise if you represent something as "00:00 for 24 hours" how does that work on a day which is only 23 hours long, or one that is 25 hours long? It will very much depend on exactly what you do with the data.

            I would adopt a process of:

            • Work out detailed requirements, including what you want to happen on days with UTC offset transitions in the specific time zone (and think up tests at this stage)
            • Extract the logical values from those requirements in terms of Noda Time types (with the limitation that no, we unfortunately don't support 24:00:00 as a LocalTime)
            • Represent those types in your JSON as closely as possible
            • Make your code follow your requirements documentation as closely as possible, in terms of how it handles the data

            Source https://stackoverflow.com/questions/67677367

            QUESTION

            Docker 0.0.0.0:55555 already in use
            Asked 2021-Jun-08 at 03:06

            I am trying to set Lean engine for python on macos using vscode as described here

            When I try to run the container, I get docker: Error response from daemon: Ports are not available: listen tcp 0.0.0.0:55555: bind: address already in use.

            This is the log output

            ...

            ANSWER

            Answered 2021-Jan-15 at 05:23

            In your run command, get rid of the "--debug --debugger-agent=transport=dt_socket,server=y,address=0.0.0.0:55555,suspend=y". This is trying to consume the same port which is why you are getting the address already in use error.

            Running the debugger on a different port will also work as long as it isn't one of the ports you are exposing via docker.

            Glad it works, thanks!

            Source https://stackoverflow.com/questions/65729808

            QUESTION

            mongoose - unexpected behavior
            Asked 2021-May-31 at 17:37

            Please read the below post.

            index.js: ...

            ANSWER

            Answered 2021-May-31 at 17:37

            In this part, you're using callback syntax so articles is undefined

            Source https://stackoverflow.com/questions/67777810

            QUESTION

            Ejs - Access variable in href
            Asked 2021-May-30 at 22:51

            I am making a blog in ejs, express and node.js. To serve the index page I query the database and pass that in to the index.ejs then I loop through which works fine but I need to have the href of the anchor set to localhost:3000/article/:title but I don't know how. Here is my code: index.js:

            ...

            ANSWER

            Answered 2021-May-30 at 22:51

            You should add the template tag inside your string. For example, if a = "123", would become .

            Updating your code to fix this should solve the issue:

            Source https://stackoverflow.com/questions/67766118

            QUESTION

            My Data from an API through Axios and displayed with Vue is not showing
            Asked 2021-May-28 at 10:46

            I just started leaning Vue Js, I am trying to fetch some information from an API and display it in a table. I really can't see what the problem is, I have gone through the code thoroughly but can't figure out where the problem is. Below is the code I have written. I am pretty it is something small. Or is there a new way of doing it in the current version of Vue?

            ...

            ANSWER

            Answered 2021-May-28 at 10:27

            Problem is you are using very old version of axios (0.2.0 ...from Sep 12, 2014)

            If you update to current verison, it works...

            Source https://stackoverflow.com/questions/67736768

            QUESTION

            How to reveal all the explicit bazel targets packed into a macro
            Asked 2021-May-26 at 05:38

            I'm diagnosing some codegen and it's backed by some bazel macro backed by a custom bazel rule.

            ...

            ANSWER

            Answered 2021-Mar-16 at 22:13

            bazel query --output=build //projX:all will print out all the targets in that package after macro and glob expansion. It has comments with the macro expansion stack traces for each target, including filenames and line numbers for the macro definitions.

            //projX:all is form of wildcard which specifies all the targets in that package. Macros can only generate targets in a single package, so that will always include all targets generated from that macro invocation.

            Source https://stackoverflow.com/questions/66661913

            QUESTION

            Getting rid of PyCharm warning for Python static/class property
            Asked 2021-May-24 at 22:18

            In my Python 2.7 program (sorry, we have a third-party precompiled Python module that's stuck at 2.7, and yes we're leaning on them to upgrade and yes they're planning on getting there), rather than having functions just return True or False:

            ...

            ANSWER

            Answered 2021-May-24 at 22:18

            You may want to make a separate predefined subclass of Result for a default 'Success' result.

            (I misinterpreted your question at first; in case one finds this question and is just looking for a way to disable PyCharm inspections locally or globally; scroll down).

            E.g:

            Source https://stackoverflow.com/questions/67640747

            QUESTION

            PANDAS dataframe concat and pivot data
            Asked 2021-May-24 at 21:16

            I'm leaning python pandas and playing with some example data. I have a CSV file of a dataset with net worth by percentile of US population by quarter of year. I've successfully subseted the data by percentile to create three scatter plots of net worth by year, one plot for each of three population sections. However, I'm trying to combine those three plots to one data frame so I can combine the lines on a single plot figure.

            Data here: https://www.federalreserve.gov/releases/z1/dataviz/download/dfa-income-levels.csv

            Code thus far:

            ...

            ANSWER

            Answered 2021-May-24 at 17:03

            I don't see the categories mentioned in your code in the csv file you shared. In order to concat dataframes along columns, you could use pd.concat along axis=1. It concats the columns of same index number. So first set the Date column as index and then concat them, and then again bring back Date as a dataframe column.

            • To set Date column as index of dataframe, df1 = df1.set_index('Date') and df2 = df2.set_index('Date')
            • Concat the dataframes df1 and df2 using df_merge = pd.concat([df1,df2],axis=1) or df_merge = pd.merge(df1,df2,on='Date')
            • bringing back Date into column by df_merge = df_merge.reset_index()

            Source https://stackoverflow.com/questions/67675432

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

            Vulnerabilities

            No vulnerabilities reported

            Install lean

            From the top-level LEAN folder, run these commands:. The build process should complete successfully.

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