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The Root is Love Group

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Axel Hughes
Axel Hughes

Prolog Software



A design pattern is a general reusable solution to a commonly occurring problem in software design. Some design patterns in Prolog are skeletons, techniques,[20][21] cliches,[22] program schemata,[23] logic description schemata,[24] and higher order programming.[25]




Prolog Software



Prolog has been used in Watson. Watson uses IBM's DeepQA software and the Apache UIMA (Unstructured Information Management Architecture) framework. The system was written in various languages, including Java, C++, and Prolog, and runs on the SUSE Linux Enterprise Server 11 operating system using Apache Hadoop framework to provide distributed computing. Prolog is used for pattern matching over natural language parse trees. The developers have stated: "We required a language in which we could conveniently express pattern matching rules over the parse trees and other annotations (such as named entity recognition results), and a technology that could execute these rules very efficiently. We found that Prolog was the ideal choice for the language due to its simplicity and expressiveness."[15] Prolog is being used in the Low-Code Development Platform GeneXus, which is focused around AI.[citation needed] Open source graph database TerminusDB is implemented in prolog.[76] TerminusDB is designed for collaboratively building and curating knowledge graphs.


Trimble ProjectSight is a construction project management software for budget & cost management, document control and field management designed for contractors. Integrated workflows between contractor and owner eliminate unwanted surprises, speed decisions and deliver next-generation productivity.


I know A.I. programmers use it.....because I did a Prolog course in my A.I. class but besides that I haven't seen much else said about it. here is a similar question with lotsa answers! -world-prolog-usage


But, of course, very few 'end-to-end systems' can be defined solely in terms of the processing of recursive structures, (exception: theorem proving- but this is a rather academic exercise*) so it's fortunate that a prolog process can be grafted on to a 'more standard imperative process' using all sorts of different techniques (it hardly matters what but a web-service interface is probably generally suitable); so you can deal with the UI, and random event processing etc and then hand-over when necessary (for doing complex database queries or any number of things you might want to do with your recursive structures). I find it works beautifully- better than, for example, LINQ.


The software that reads and sorts much of the mail in the US and several other countries is written in Prolog, using a highly optimized compiler. The syntax of mail addresses is written in definite clause grammars, which makes maintenance easy and simplifies adapting the reader to the conventions of various countries and industrial users. Postal services often have complicated sets of rules about things like forwarding addresses, post office boxes vs. street address, etc., and these rules are also formulated in Prolog for easy maintenance.


Prolog for Javais free software; you can redistribute it and/or modify it under theterms of the GNU Lesser General Public License as published by the FreeSoftware Foundation; either version 3 of the License, or (at youroption) any later version.


If you are in a public Lehigh computer lab, first check to see if SWI-Prolog is already installed by clicking "Start" and "All Programs". If you see the program in the list, then you do not need to do anything else but select it in order to run it. If it is missing, you can do a standard Lehigh network installation. If you have the standard Lehigh background screen, then you can simply click "Install Software". Otherwise, go to the Start menu, select "All Programs", and then select "Install Software" (it should be at the top of the menu). From the list of available software, select SWI-Prolog and proceed with the install instructions. Note, if you have WIRED access from your dorm room, then this install method should also work.


If you do not have access to Lehigh's standard software installation process, you can download SWI-Prolog yourself. Go to the SWI-Prolog download page and get the stable release. Follow the installation instructions given in the download.


The editor I used in class (called PCE Emacs) comes with your SWI Prolog download. However, the default install is configured to use your normal text editor (usually Notepad). In order to make PCE Emacs the default editor from SWI Prolog, do the followingSelect Settings -> User init file... from SWI Prolog's menu bar.The system will say that it could not find an initialization file, and ask if you want to create one. Respond yes. As a result, a file should be opened in a text editor.Find the following line in the file:% :- set_prolog_flag(editor, pce_emacs).Remove the initial "%", effectively uncommenting the line. It should look like::- set_prolog_flag(editor, pce_emacs).Save the file and close it.Close and restart SWI Prolog. Now when you use the New or Edit menu options, PCE Emacs should be the default editor.


Sometimes when you consult your Prolog code, you will see an error such as:Warning: (c:/program files/prolog/myprogram.pl:5): Clauses of mypred/2 are not together in the source-file% myprogram compiled 0.00 sec, 0 bytes


Depending on the content at point, ediprolog-dwim does the"appropriate" thing: If point is on a query, it sends the query to aProlog process, and you interact with the process in the currentbuffer as on a terminal. Queries start with "?-" or ":-", possiblypreceded by "%" and whitespace. An example of a query is:


When waiting for output of the Prolog process, you can press C-g tounblock Emacs and continue with other work. To resume interactionwith the Prolog process, use M-x ediprolog-toplevel RET.


Use M-x ediprolog-localize RET to make any Prolog process startedin the current buffer buffer-local. This way, you can run distinctprocesses simultaneously. Revert withM-x ediprolog-unlocalize RET.


Key Sequence Meaning ------------------------------------------------------------------------ C-0 F10 kill Prolog process C-1 F10 always consult buffer (even when point is on a query) C-2 F10 always consult buffer, using a new process C-7 F10 equivalent to `ediprolog-toplevel' C-u F10 first consult buffer, then evaluate query (if any) C-u C-u F10 like C-u F10, with a new process


FOLSOM, Calif.--(BUSINESS WIRE)--Meridian Systems, the Plan-Build-Operate technology solutions leader for project-based organizations, announced today the release of Prolog Version 9 software, a new release featuring several product enhancements and performance improvements for the Prolog construction project management application suite.


Prolog 9 is available starting September 30, and will be available as a self-hosted deployment and on the new Sky service, announced by Meridian on August 25, 2011. The Sky service is a new cloud-based deployment offering allowing access to Prolog software in a hosted environment. The Sky service allows customers to quickly and easily deploy Prolog in a proven software hosting environment, enabling organizations to start realizing construction project management software benefits within a tight time schedule. The Sky service also provide customers with the flexibility to manage their software investment by providing the ability to easily scale the number of users up or down as their business grows or as the user base changes.


Meridian Systems, a Trimble Company (NASDAQ: TRMB), is the Plan-Build-Operate technology solutions leader for project-based organizations. Building owners, construction and engineering firms, and public agencies use Meridian software to effectively manage capital building and facility renovation programs. As a result, Meridian has secured the top spot among off-the-shelf project management software used by the construction industry1.Meridian also pioneered infrastructure lifecycle management solutions for capital building owners, by combining plan-build-operate features on an open technology platform. Download free Meridian research and case studies by going to:


This report describes an abstract Prolog instruction set suitable for software, firmware, or hardware implementation. The instruction set is abstract in that certain details of its encoding and implementation are left open, so that it may be realized in a number of different forms. The forms that are contemplated are:


In cases where actual malware is found, the packages are subject to removal. Software sometimes has false positives. Moderators do not necessarily validate the safety of the underlying software, only that a package retrieves software from the official distribution point and/or validate embedded software against official distribution point (where distribution rights allow redistribution).


with three rules for functor p. The query ?- p(X) returns three values for X (a,b,c). See the post on non-determinism in prolog for details of this behaviour. Suppose we change the second rule to p(b) :- !. Then the effect of the cut is stop the search after the goal succeeds. Therefore X=a; X=b are the two results and the third rule is not tried.


The negation operator (neg equivalent to \+) can be defined in prolog using the following two rules and cut. If goal G can be proved using built in predicate call(G) then freeze the search and return false (fail). If the goal G cannot be proved then call(G) fails therefore the second rule is used and neg(G) is true.


"Already in 1976, Alain felt constraints were the next giant leap needed in logic programming -- a dream that spawned two most influential further contributions. The first was the move from unification to equations and inequations over infinite trees (late 70's/early 80's), which materialised in award-winning software and paved the way for many of the accomplishments in Constraint LP that flourished as from the mid-80's. 041b061a72


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