Stack Overflow
Stack Overflow

Questions tagged [knowledge-graph]

Knowledge graph is an enterprise-wide integrated database based on graph technologies. The term was widely introduced by Gartner's Hype Cycle of Emerging Technologies, 2018. Use the 'google-knowledge-graph' tag, if you mean Google Knowledge Graph solely.

181 questions
0
votes
0 answers

How to search entity in an given knowledge graph with multiple ttl files locally?

I am now trying to query the knowledge graph in local. The knowledge graph is the CORD-19 Annotated By SemRep, which is a tar.gz file after downloading. I want to search if the entity or relation exists in the knowledge graph or not. Expected…
Wan-Hsuan Chiang
  • 1
  • 1
0
votes
1 answer

How to Map Freebase to Wikipedia in Python

I met a problem when trying to map the Freebase to Wikipedia, due to the deprecation of the Freebase. I know there is a method by downloading the Freebase Dump and replace the Freebase to Wikipedia, but it might not be realised due to the large size…
Zimu Wang
  • 77
  • 1
  • 3
0
votes
1 answer

Listing All Classes And Instances from N-triple file with Jena

I am a beginner and want to list all the entities/classes and instance from N-triple file through Jena but I don't know how to do it. Or it is possible to do this with Sparql. I have already load the N-triple file as a JENA model. Model model =…
Khalid Bin Huda
  • 1,583
  • 17
  • 16
0
votes
0 answers

Accessing multiple values in .trig file blank node

I've got a .trig file uploaded to Apache Jena Fuseki local server. The 3 named graphs inside the .trig file are centered around different flights - each graph has a snapshot of the traffic situation and flight data for a timestamp. DATA The data is…
IvanFPZ
  • 1
  • 1
0
votes
1 answer

Giving conditions to Neo4j Nodes

When I query MATCH (n:label {Name_1: 'A'}) MATCH (n)--(p)--(q)--(r) RETURN n, p, q, r But B receives connection from other nodes aswell, like Here I want B to be given only when I query every node connected to B with a query like MATCH (n:label…
Gram
  • 33
  • 3
0
votes
1 answer

Neo4j create node with conditions

As you see in image, A is connected to B,C,F,G. When I query A like "Match (n:Label{Name:'Name'})", it's returning me B,C,F,G which is right, but I want "B" to be returned only if I query "A","D","E", like if the values of A,D,E are true. Here D, E…
Gram
  • 33
  • 3
0
votes
1 answer

Nodes without names in Neo4j

I have data like the above(toy example, let's take the top 3 lines.), for one question there could be multiple answers in the *.CSV file. Because I have the question in only one cell, the remaining cells are created as nodes without names. Is there…
Gram
  • 33
  • 3
0
votes
1 answer

How to linked datasets in csv file with RDF Ontology?

I wanted to link the datasets of Adobe's Security Advisory product that in .CSV format with the ontology that I already created, the example of datasets looks like this: Text Label APSA08-05 SecAdvisoryID APSB12-09 BulletinID Here is…
tas
  • 41
  • 2
  • 2
  • 8
0
votes
1 answer

How to reduce this pandas dataframe join code

I have a template in the form of a list of tuples below, and I'm going to instantiate it using dataframe join. rule = [('#1', 'X', 'Y'), ('#2', 'X', 'Z'), ('#3', 'Z', 'Y')] I also have an instance of each component of the template as a…
Won chul Shin
  • 343
  • 1
  • 2
  • 8
0
votes
1 answer

Prefix param in KG API doesn't affect?

I'm calling the KG API: https://kgsearch.googleapis.com/v1/entities:search?key=----key-----&limit=1000&languages=en&types=&prefix=true&query=dog &prefix=true so I expect to see only results with names that starts with dog, but I see a few which…
Elad Benda
  • 35,076
  • 87
  • 265
  • 471
0
votes
1 answer

How to transform unstructured text to rdf turtle in practice?

i am currently working on a study project, where i have to transform the vehicle complaints descriptions from the NHTSA Database (https://catalog.data.gov/dataset/nhtsas-office-of-defects-investigation-odi-complaints) into rdf-turtle and later into…
Dennis Luo
  • 1
0
votes
1 answer

GRAKN Server start fails right after install

Installed Grakn-Core as per their instruction on the website via Homebrew (Mac OS). As I am trying to start the Grakn server by executing grakn server start I am consistently getting the following error: Same goes for any other command argument…
Y. Kravets
  • 11
  • 1
0
votes
0 answers

How to query both relational database and ontology (OWL) from a web application?

I have an ontology (.owl file) about the restaurant and I also have two tables of data: customer.csv and orders.csv which are stored in PostgreSQL database. I want to create a simple web application which can accept SQL queries and transfer it to…
Maksim Li
  • 1
  • 1
0
votes
2 answers

How can I solve this problem loading Grakn schema and data at localhost:48555?

I'm using grakn core 1.8.4 with Windows 10. The grakn server and grakn storage are starting up normally, but when trying to load a schema, Grakn returns the following error message: Unable to create connection to Grakn instance at…
Jorge
  • 167
  • 8
0
votes
0 answers

(Microsoft Academic Knowledge Exploration Service) Help needed in DeployHost procedure

I cannot go further while trying to use MAKES (Microsoft Academic Knowledge Exploration Service) API. I have been referring to the guide document…
minsuksuh
  • 1
  • 1
1 2 3
…
11 12