How ontology be useful for NoSQL Database
I know the ontology can be very useful when we use it over RDBMSs. It can describe our schema in a meaningful/semantic way, something lacking from most databases schema. But my question -since I am...
View ArticleHow the various triple tables related to one another?
Hello! I am wondering if someone has multiple triple tables with three columns each <subject,predicate,object> representing the statements. In the Database world, sometimes data explicitly...
View Articlesparql query code not working in jena
i test this sparql query in jena-fuseki-1.1.1 it is working but when i use in jena java project it is not give me output.inside while loop not executing.private static void sparqlTst() {...
View ArticleSemantic Markup and CMS
Hi All,If I were to be an online retailer and wanted to publish the product data as semantically marked up content something like MicroData+ Schema.org, what CMS would provide me the best support, I...
View ArticleSemantic techniques in IOT interoperability
Hi Everyone,I am a Ph.D. student and I am working on "using semantic technologies to handle IOT interoperability". From the last two months I am doing literature survey and during this time I came to...
View ArticleSPARQL - Retrieve all triples for a given resource, where resource has a...
Hello,I am querying a dataset and trying to return all RDF triples for a resource that has a rdfs:label containing a specific string. I have tried doing this:select ?s ?p ?o where { ?s ?p ?o . ?s <...
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Semantic Web Stack or Semantic Web Cake or Semantic Web Layer Cake
Hi All,I am new to semantic web. I stumble upon semantic web stack (Semantic Web Cake or Semantic Web Layer Cake), and found out there are several variations for it i.e -What is the difference between...
View ArticleSemantic annotation of IOT data
From last few days I am trying to annotate the data received from the sensors. Data mostly consists of different readings from sensor nodes. For the same I followed some books and covered tutorial at...
View Articletriple store for storing data/measurements generated from sensors
I want to store data readings generated from sensors in a triple store. Number of sensors are more than 50 and the data generated by these consists of certain measurements like temperature reading or a...
View ArticleSemantic web: Entity vs. Concept vs. Class
Hello all, I am a newbie with Semantic web. I have a lot of papers related to SW, but still confuse about the terms: Entity, Concept, Class Some papers define them as synonyms, where other describe...
View ArticleNew to semantic web
Hello everybody,I just learned about the semantic web yesterday and yet read a lot about because I have many interest in it. There are just two things which I can't get a clear view of. I tried to...
View ArticleUse of E-commerce Ontology
Hello all, I recently came to know about the GoodRelation Onotlogy that have information about commerce data, also there are some websites that use this ontology, but other details are unavailable in...
View ArticleCreating an OWL sub-class based on the equality of two object properties
Consider that I have classes A and B in OWL. They both have two different object properties P1 and P2 whose ranges are class C.I want to create a class D which represents any A that contains an object...
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Use an ontology to store CSV data into RDF form
Problem Definition: Store sensor data (temperature readings, sensor description) into rdf form using an ontoloy. Further, use SPARQL to perform queries on stored data.My Approach: I am not an expert in...
View ArticlePython package to search ontologies
Is there a Python package that lets me search ontologies for certain predicates? I know that there are semantic search engines, but I need a tool that I can use with Python.
View ArticleShould I still publish geospatial data with OGC standards?
Hi everyone! This is kind a complex question and I know there's not a right or wrong or even a definitive answer, but I need help to make some decisions.Usually, when one works with publishing...
View ArticleHow to avoid repeated company names and group them as a one category in sparql?
I have following query link text , you can find each company name for example amazon web service repeated several times regarding to its locations or its product. I have tried different solution with...
View ArticleSpecifying class equivalence in Jena rules
Given an ontology with Class A and Class B I am stating a rule : [-> (ns:Class_A owl:equivalentClass ns:Class_B)]However the Jena generic rule reasoner is only applying the tag equivalentClass to...
View ArticleJena Rules : how to detect when value of an individual changes ?
Suppose if there exists a Class Bug which has data property hasStatus, So if the current value is "Closed" and the property value changes to "Open", how would i detect change in the property via Jena...
View Articlejena library in order to Diagnosis disjointwith classes
How i can start a reasoner on dbpedia owl in jena library in order to Diagnosis disjointwith classes?
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