TREE-Guided-Link-Traversal-Query-Processing-Evaluation

Dependencies

• Nodejs 18 or higher
• Rust

Prepare the data

Warning: Do not forget to clone the submodule

Clone the submodule

git submodule init 
git submodule update

or

git clone --recurse-submodules -j8 {address of the repo}

Generate fragments

./run_evaluation.sh install-comunica
yarn install
./run_evaluation.sh install-injestor
./run_evaluation.sh download-dataset 

to generate the fragmentation with 100 nodes

./run_evaluation.sh dahcc-1-participant-one-ary-tree-100 --server

to generate the fragmentation with 1000 nodes

./run_evaluation.sh dahcc-1-participant-one-ary-tree-1000 --server

Queries

Q1

PREFIX sosa: <http://www.w3.org/ns/sosa/> 
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> 
PREFIX wgs: <http://www.w3.org/2003/01/geo/wgs84_pos#>
PREFIX etsi: <https://saref.etsi.org/core/>
    
SELECT * WHERE {
    ?s etsi:hasTimestamp ?t.
?s etsi:hasValue ?result.
?s etsi:measurementMadeBy ?sensor.
?sensor <https://dahcc.idlab.ugent.be/Ontology/Sensors/analyseStateOf> ?stateOf.
?sensor <https://saref.etsi.org/core/measuresProperty> <https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/energy.consumption>

    FILTER(?t="2022-01-03T10:57:54.000000"^^xsd:dateTime)
}

Q2

PREFIX sosa: <http://www.w3.org/ns/sosa/> 
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> 
PREFIX wgs: <http://www.w3.org/2003/01/geo/wgs84_pos#>
PREFIX etsi: <https://saref.etsi.org/core/>
    
SELECT * WHERE {
    ?s etsi:hasTimestamp ?t.
?s etsi:hasValue ?result.
?s etsi:measurementMadeBy ?sensor.
?sensor <https://dahcc.idlab.ugent.be/Ontology/Sensors/analyseStateOf> ?stateOf.
?sensor <https://saref.etsi.org/core/measuresProperty> <https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/environment.light>

    FILTER(?t="2022-01-03T19:54:22.469000"^^xsd:dateTime)
}

Q3

PREFIX sosa: <http://www.w3.org/ns/sosa/> 
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> 
PREFIX wgs: <http://www.w3.org/2003/01/geo/wgs84_pos#>
PREFIX etsi: <https://saref.etsi.org/core/>
    
SELECT * WHERE {
    ?s etsi:hasTimestamp ?t.
?s etsi:hasValue ?result.
?s etsi:measurementMadeBy ?sensor.
?sensor <https://dahcc.idlab.ugent.be/Ontology/Sensors/analyseStateOf> ?stateOf.
?sensor <https://saref.etsi.org/core/measuresProperty> <https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/energy.consumption>

    FILTER(?t>="2022-01-03T15:00:00.000000"^^xsd:dateTime && ?t<"2022-01-03T15:30:00.000000"^^xsd:dateTime)
}

Q4

PREFIX sosa: <http://www.w3.org/ns/sosa/> 
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> 
PREFIX wgs: <http://www.w3.org/2003/01/geo/wgs84_pos#>
PREFIX etsi: <https://saref.etsi.org/core/>
    
SELECT * WHERE {
    ?s etsi:hasTimestamp ?t.
?s etsi:hasValue ?result.
?s etsi:measurementMadeBy ?sensor.
?sensor <https://dahcc.idlab.ugent.be/Ontology/Sensors/analyseStateOf> ?stateOf.
?sensor <https://saref.etsi.org/core/measuresProperty> <https://dahcc.idlab.ugent.be/Homelab/SensorsAndActuators/energy.consumption>

    FILTER((?t>="2022-01-03T15:00:00.000000"^^xsd:dateTime && ?t<"2022-01-03T20:00:00.000000"^^xsd:dateTime) && !(?t>="2022-01-03T15:10:00.000000"^^xsd:dateTime && ?t<"2022-01-03T15:40:00.000000"^^xsd:dateTime))
}

Run the queries

To run the queries you have to run the following command schema.

node comunica_runner.mjs -f ./evaluation/query/{}.ttl -m {TREE-GUIDED|TREE} -r http://localhost:8080/0.ttl -d http://localhost:8080/metadata.ttl  

For example

node comunica_runner.mjs -f ./evaluation/query/Q2.ttl -m TREE-GUIDED -r http://localhost:8080/0.ttl -d http://localhost:8080/metadata.ttl  

It will output something like

{"nResults":1,"timeExec":5111.714145,"nRequest":3}