LPBenchGen is an OWL explainable structural learning problem Benchmark Generator.
Explainable AI is becoming more important and more and more systems to tackle that problem are developed. However, there is a lack of benchmark datasets.
LPBenchGen tries to tackle that problem by providing a tool that can generate benchmarks using a TBox and an ABox.
The ABox can either be behind a SPARQL endpoint or in an RDF file. Using an RDF file allows an Open World Assumption. This is restricted in SPARQL, which generally allows only a Closed World Assumption.
Have a look at our latest Documentation at https://dice-group.github.io/LPBenchGen/
A learning problem is a set of positive examples and negative examples, whereas one example is an Individual contained in the ABox.
A system then may be benchmarked to find the best concept/class expression or try to find all other positive Individuals .
LPBenchGen will create a lot of theoretically class expression based upon the TBox and checks if these have enough solutions using the ABox. The user can set parameters allowing longer and more complex as well as smaller and easier expressions, how many of these should be created and a lot more.
Using these expressions LPBenchGen creates positive examples for one learning problem. However, it is not straight forward to retrieve negative examples.
For example if we have a big diverse Database and have a concept such as Tree and (hasLeaves some Leaves):
A negative Example such as Elefant wouldn't be useful at all.
What would be useful is something like WindFlower-1 as it has leaves, but is not a Tree.
Hence, LPBenchGen creates a few class expression based upon the positive class expressions in that matter. These basically negate some parts of the original expression and hence providing useful negative examples.
Afterwards these concepts will be used to retrieve positive and negative examples and thus creating the learning problem.
A benchmark in this context is a set of such learning problems.
For a detailed description please have a look at Underlying-Model
LPBenchGen generates a training benchmark set, a test benchmark set and a gold standard for the test benchmark.
No worries. LPBenchGen can create a small ABox fitting the problems in the benchmark.
If you generated your benchmark accordingly (see Usage) LPBenchGen provides a small evaluation. Simply use the test benchmark, the gold standard, and the actual system answers and evaluate. See Usage for the correct format and eval.
Download the latest release jar file at https://github.com/dice-group/LPBenchGen/releases/latest
See Getting-Started for how to execute the generation.
The code is open source at https://github.com/dice-group/LPBenchGen and you can code with us if you want to :)
Please use the Github Issue Tracker at https://github.com/dice-group/LPBenchGen/issues
Have a look at our latest Documentation at https://dice-group.github.io/LPBenchGen/