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Based on our record, Apache Jena should be more popular than AllegroGraph. It has been mentiond 5 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Another good one I just started working with is AnzoGraph. Also, a product but (at least according to a colleague, I'm just starting to use it myself) you can also do quite a bit of serious work with the community version. Also, GraphDB from OntoText and TBD from Apache Jena as well. Source: almost 2 years ago
Completely agree. I'm hoping to one day see Jena [0] compiled to a native image [1]. Having a persistent triple store with transactions, and an inference api in owl/rdfs/shacl with a prolog-like "logic programming engine", running in process like SQLite, would be awesome. [0] https://jena.apache.org/ [1] https://www.graalvm.org/22.0/reference-manual/native-image/. - Source: Hacker News / about 2 years ago
The first thing you need to decide is how to link your ontology with a programming language. Speaking very broadly there are 2 approaches: 1) Use a library like Apache Jena (for Java) or OWLReady2 (for Python). What these libraries do is enable you to take your model and create objects in your Java or Python program to manipulate it (query it, create instances of classes, set property values, etc.). Source: over 2 years ago
The semantic web is more than just front end. Apache jena is an example of a semantic web library. Source: almost 3 years ago
I worked in a semweb company ~10 years ago - https://jena.apache.org/ as a general starting point is a useful library. I remember distinctly OWLIM https://www.w3.org/2001/sw/wiki/Owlim as a great triple store. - Source: Hacker News / about 3 years ago
However, Protege is a modeling tool not a database. So when you start getting into large amounts of data (e.g., 10K instances or more) you will need another tool, ideally a database. There are tools to do what's called Data Virtualization, where you can represent your data (what OWL users call the A-Box, i.e., the equivalent of instances in OOP or rows in a relational DB) in a relational database and map the data... Source: almost 2 years ago
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