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Questions tagged [allegrograph]

AllegroGraph is a closed source graph database (triple store) created by Franz Inc. that supports semantic web standards like RDF, SPARQL, JSON-LD and SHACL.

AllegroGraph is a graph database (triple store) created by Franz Inc. written in in development since 2006. The latest release is v6.6.0.

It supports standards like , , , and , and integration with and .

The server runs exclusively on and offers a web-based client to manage repositories and issue SPARQL queries.

There are based open-source clients available for , , , , , and .

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What reasoner to use with AllegroGraph RDF Triple Store?

I created an Ontology in TopBraid Composer and loaded it to AllegroGraph Triple Store. RDFS++ Inferencing (explained in example 19 here) works. Now I want to use a Semantic Reasoner that can do more than just RDFS++ Inferencing (e.g. Pellet, HermiT…
Grapheneer
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Unable to run SPARQL based on my condition

I am trying to excute a SPARQL query based on user type (user type must be employee and non employee) but am unable to excute query itself. This is the query: Select ?user ?type Where { ?user org:chainOfCommand org:jw9583 …
user3734430
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How to call a registered SPIN function in Allegrograph with AGWebView?

I'm using Allegrograph as my triplestore and I try to use SPIN functions. I managed to register a simple SPIN function via the HTTP API of the AGWebView tool. Now, I'm trying to call the SPIN function in a SPARQL query, but AGWebView tells me it…
Jack Verhoosel
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Installing Allegrograph on ubuntu

I’m trying to install Allegrograph on Ubuntu 14.04.2 LTS using the below instructions from here However, I’m having problems. I have created the directory /home/me/Allegrograph_4.14.1 and have myself as the owner. I then…
Bendy
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family relation in Prolog Query :transitive relations

I have information in AG knowlwedgebase like this Person1 hasBrother Person2 Person1 hasSister Person 3 How can I write a rule in prolog to find out additional relations from the the above facts Person2 hasSister Person3 Person3 hasBrother…
user3356568
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How to use SPARQL Filter query function in prolog query

I want to query those persons from RDF graphdatabse who are traveled at the same location and at the same date or ovelapped date. We have persons information with travlel location and their fromdata and todate. I am running the following query in…
user3356568
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Registering Namespace in AllegroGraph (Registered nameSpaces is missing.)

I have a problem about registering namespace in AllegroGraph. My Java code (program 1): AllegroGraphConnection agc = new AllegroGraphConnection(); agc.enable(); AllegroGraph ag = agc.create("test", AGPaths.TRIPLE_STORES); …
WellBeing
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sorting or index in knowledgebase Allegro

I have a allegrograph knowledgebase that has hundreds of triples in it. Each triple contains subject predicate and object .I need to sort out/Index of objects based on predicate for example Sub. Pred. Obj d1. hasName. "abc" Id5…
user3061324
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Alernative to Neo4j Graph database

Looking for graph db which could be alternative for Neo4j, can any one suggest a better one which could be easily integrated with Java application and has better performance in migrating data from MSSQl to that graphdb.
Jeevanantham
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Is it possible to get all classes and their respective instances using a single SPARQL query?

I have a requirement to show all the classes and their respective instances when the user accesses our website. We use Allegrograph as our RDF database. So once the user selects the repository from which to fetch the data, we need to show all the…
sraf
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Object-to-Triple mapping using AllegroGraph RDF store?

My project is building a Java web application on top of the AllegroGraph RDF store. I would like to find a good solution to map between the triples that come out of the store and our domain objects. I have looked into Topaz, an Object/Triple…
Julie
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Unable to add the allegrograph plugin to topbraid composer

I am unable to add the allegrograph plugin to topbraid composer, getting the error message as below: Cannot complete the install because one or more required items could not be found. Software being installed: com.franz.agraph.feature…
Eshodhana India
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allegrograph xsd float literals

I'm uploading triples to an AG store from a graph generated in python by rdflib. Some of the objects in my triples are floats, so I add them to the graph like this: Literal(float(float_value), datatype=XSD.float) When I serialize the graph using…
jjon
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Web Service for the AllegroGraph API

The AllegroGraph RDF Store provides multiple channels to communicate through. I am developing a Web Service for that. I have the following questions: How to implement a Web Service over this SPARQL Endpoint? What are the best practices? CXF or Axis?
Saravana Kumar
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AllegroGraph memoryLimit query option

Where can I set AllegroGraph's memoryLimit query option that is mentioned here? I am using AllegroGraph 4.9 and keep getting QUERY_MEMORY_LIMIT_REACHED errors when I execute one of my SPARQL queries via WebView. The log says: Query has reached…
cyroxx
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