Workdocumentation 2022-08-16

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Participants

  • Tim
  • Wolfgang

Agenda

dblp Qlever

dblp Qlever

on RWTH Aachen DBIS i5 server

wf@confident:/hd/torterra/dblp2022$ wget https://dblp.org/rdf/dblp.nt.gz
--2022-08-16 12:00:18--  https://dblp.org/rdf/dblp.nt.gz
Resolving dblp.org (dblp.org)... 192.76.146.204
Connecting to dblp.org (dblp.org)|192.76.146.204|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2789108619 (2.6G) [application/x-gzip]
Saving to: ‘dblp.nt.gz’

dblp.nt.gz           36%[======>             ] 980.73M  38.9MB/s    eta 45s 
dblp.nt.gz          100%[===================>]   2.60G  34.1MB/s    in 76s     
2022-08-16 12:01:34 (35.1 MB/s) - ‘dblp.nt.gz’ saved [2789108619/2789108619]
gunzip dblp.nt.gz
ls -l
total 34405612
-rw-rw-r-- 1 wf wf 35231339037 Aug 16 00:16 dblp.nt

wget https://dblp.org/rdf/dblp.ttl.gz
--2022-08-16 15:36:37--  https://dblp.org/rdf/dblp.ttl.gz
Resolving dblp.org (dblp.org)... 192.76.146.204
Connecting to dblp.org (dblp.org)|192.76.146.204|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1065586620 (1016M) [application/x-gzip]
Saving to: ‘dblp.ttl.gz’
dblp.ttl.gz             47%[===========>              ] 483.91M  43.1MB/s    eta 16s
dblp.ttl.gz            100%[=========================>]   1016M  32.7MB/s    in 29s     
2022-08-16 15:37:06 (35.3 MB/s) - ‘dblp.ttl.gz’ saved [1065586620/1065586620]
gunzip dblp.ttl.gz

QLever installation

https://wiki.bitplan.com/index.php/WikiData_Import_2022-01-29

Environment

lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.4 LTS
Release:	20.04
Codename:	focal
wf@confident:/hd/torterra/qlever$ docker --version
Docker version 20.10.12, build 20.10.12-0ubuntu2~20.04.1
wf@confident:/hd/torterra/qlever$ free -h
              total        used        free      shared  buff/cache   available
Mem:           15Gi       1.2Gi        12Gi        45Mi       1.6Gi        13Gi
Swap:          11Gi          0B        11Gi
Disk space
df | grep -v loop | grep -v tmp | grep -v udev
Filesystem      1K-blocks       Used Available Use% Mounted on
/dev/sda3       114226348   55228964  53148860  51% /
/dev/sdb1      3844590624 3266511864 382711544  90% /hd/torterra

QLever code clone

export QLEVER_HOME=$(pwd)
date;git clone --recursive https://github.com/ad-freiburg/qlever qlever-code;date
Tue Aug 16 15:10:09 CEST 2022
Cloning into 'qlever-code'...
remote: Enumerating objects: 14625, done.
remote: Counting objects: 100% (279/279), done.
remote: Compressing objects: 100% (227/227), done.
remote: Total 14625 (delta 133), reused 131 (delta 52), pack-reused 14346
Receiving objects: 100% (14625/14625), 190.60 MiB | 6.48 MiB/s, done.
...
Submodule path 'third_party/stxxl/extlib/foxxll/extlib/tlx': checked out 'ef81a598d9880cc7d242afc47de7328634f07f1d'
Tue Aug 16 15:10:56 CEST 2022

Build

date;sudo docker build --file Dockerfiles/Dockerfile.Ubuntu20.04 -t qlever .;date
Tue Aug 16 15:13:02 CEST 2022
Sending build context to Docker daemon    453MB
Step 1/43 : FROM ubuntu:20.04 as base
20.04: Pulling from library/ubuntu
3b65ec22a9e9: Pull complete 

Removing intermediate container 1ccc2a50364e
 ---> d0018440a4cd
Successfully built d0018440a4cd
Successfully tagged qlever:latest
Tue Aug 16 15:25:28 CEST 2022

qlever control

git clone https://github.com/ad-freiburg/qlever-controlCloning into 'qlever-control'...
remote: Enumerating objects: 368, done.
remote: Counting objects: 100% (208/208), done.
remote: Compressing objects: 100% (135/135), done.
remote: Total 368 (delta 75), reused 183 (delta 72), pack-reused 160
Receiving objects: 100% (368/368), 117.76 KiB | 7.36 MiB/s, done.
Resolving deltas: 100% (130/130), done.

dblp stardog

docker pull stardog/stardog:latest
latest: Pulling from stardog/stardog
2d473b07cdd5: Pull complete 
b0eac9aee9aa: Pull complete 
8d5b89da19bc: Pull complete 
91c2bc930138: Pull complete 
265d7b96dd8f: Pull complete 
Digest: sha256:7fc70e1bd3d17bdb1440f0cd810294b5318f1c53935425bb51526da4a949afc0
Status: Downloaded newer image for stardog/stardog:latest
docker.io/stardog/stardog:latest


DBLP versus CEUR-WS Queries

All Volumes known to dblp

    • expected 70% of 3185 volumes found 75%
    • actual 75%
SELECT (COUNT(?proceeding) as ?count) (MIN(xsd:integer(?volNumber)) as ?min)  (MAX(xsd:integer(?volNumber)) as ?max) 
WHERE { 
    ?proceeding dblp:publishedIn "CEUR Workshop Proceedings";
                dblp:publishedInSeriesVolume ?volNumber .
    }
LIMIT 5000
count min max
2375 1 3157

All papers

    • expected 70% of ~50000 papers
SELECT (COUNT(?paper) as ?count)
WHERE { 
    ?proceeding dblp:publishedIn "CEUR Workshop Proceedings".
    ?paper dblp:publishedAsPartOf ?proceeding.
}
count
44275

All authors and editors =

    • authors: papers expected: <1:1 and >1:3 found 1.6 distinct authors in relation to distinct papers
    • editors: volumes 3:1 found 4625 editors for 2377 volumes
SELECT (COUNT(DISTINCT ?author) as ?numberOfAuthors) 
       (COUNT(DISTINCT ?paper) as ?numberOfPapers) 
       (COUNT(DISTINCT ?editor) as ?numberOfEditors)
       (COUNT(DISTINCT ?proceeding) as ?numberOfVolumes)
WHERE { 
    ?proceeding dblp:publishedIn "CEUR Workshop Proceedings".
    OPTIONAL{?proceeding dblp:editedBy ?editor}
    OPTIONAL{
        ?paper dblp:publishedAsPartOf ?proceeding.
        OPTIONAL{?paper dblp:authoredBy ?author}
    }
    
}
numberOfAuthors numberOfPapers numberOfEditors numberOfVolumes
69846 44275 4625 2377

Note: There are proceedings of ceurws without an volumeId

  • Cross-check against wikidata
    • 53000 dblp authors out of 2.3m
    • all editors MUST be in dblp acording to the rules of ceur-ws
    • authors can be in dblp
  • Disambiguation problem only on ceur-ws side
    • idea: calculate distance of potential candidate authors to authors in the same volume
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