pyRDF2Vec with openalex dataset

[Weiweihere]

❓ Question

I would like to ask if there are any restrictions for endpoint? I tried to use openalex without success.

I want to use this sparql end point ，so coding:

kg_sem = KG("http://semopenalex.org/sparql")

ValueError: 'location' must be a valid URL (got http://semopenalex.org/sparql)

[bsteenwi]

Hi,

In my browser http://semopenalex.org/sparql is not a valid URL either...
Do you get the same error when using https://semopenalex.org/sparql (so the https version)?

[Weiweihere]

Hi,

Thanks for your reminding! i have another question regarding how to define the literals?

I tried to according to example below, but then i am not sure how to set the content in literals[]. Could you give some explain? or the corresponding SPARQL Query of example.

KG(
"https://dbpedia.org/sparql",
skip_predicates={"www.w3.org/1999/02/22-rdf-syntax-ns#type"},
literals=[
[
"http://dbpedia.org/ontology/wikiPageWikiLink",
"http://www.w3.org/2004/02/skos/core#prefLabel",
],
["http://dbpedia.org/ontology/humanDevelopmentIndex"],
],

[bsteenwi]

Literal information can be provided by specifying the predicate(s) where the literal information from a given starting node of interest can be found.

The example above was defined for the countries dataset & we wanted to create an embedding for multiple countries (nodes of interest).

We specified that pyRDF2Vec can find numerical literal information for these countries in the first neighbourhood:

["http://dbpedia.org/ontology/humanDevelopmentIndex"] 

and in the second neighbourhood:

[
"http://dbpedia.org/ontology/wikiPageWikiLink",
"http://www.w3.org/2004/02/skos/core#prefLabel",
] 

For an example country http://dbpedia.org/resource/Antigua_and_Barbuda, you will find numerical information starting from this node http://dbpedia.org/resource/Antigua_and_Barbuda along the http://dbpedia.org/ontology/humanDevelopmentIndex path and also along the http://dbpedia.org/ontology/wikiPageWikiLink (intermediate node) http://www.w3.org/2004/02/skos/core#prefLabel path.

pyRDF2Vec only requires all the predicates along a path to literal information to take them into account.

I hope this explanation helps you to construct an example yourself.

Kind regards