mommi84

#
# Endpoint: https://databus.dbpedia.org/repo/sparql
# Credits: @JJ-Author, @mommi84
#
PREFIX dataid: <http://dataid.dbpedia.org/ns/core#>
PREFIX dc:     <http://purl.org/dc/terms/>
PREFIX dcat:   <http://www.w3.org/ns/dcat#>
PREFIX dcv:    <http://dataid.dbpedia.org/ns/cv#>

SELECT DISTINCT ?url WHERE {

mommi84

# list all differences between two entities, filtered by certain properties

SELECT * WHERE {
  {
    <http://dbpedia.org/resource/Nevada> ?p ?o1 
    MINUS { <http://dbpedia.org/resource/Lincoln_County,_Nevada> ?p ?o1 }
  } UNION {
    <http://dbpedia.org/resource/Lincoln_County,_Nevada> ?p ?o2 
    MINUS { <http://dbpedia.org/resource/Nevada> ?p ?o2 }
  }

mommi84

Awesome Knowledge Graph Embedding Approaches

This list contains repositories of libraries and approaches for knowledge graph embeddings, which are vector representations of entities and relations in a multi-relational directed labelled graph. Licensed under CC0.

Libraries

• 🆕 AmpliGraph (4 algorithms) @ https://github.com/Accenture/AmpliGraph
• Embedding framework (5 algorithms) @ https://github.com/BookmanHan/Embedding

mommi84

#!/usr/bin/env bash
python3 -m venv env
source env/bin/activate
pip3 install ipykernel jupyter
python3 -m ipykernel install --user --name=env
jupyter notebook

# for 'requirements.txt':
# pip3 freeze > requirements.txt

mommi84

#!/bin/bash
curl -s https://lod-cloud.net/lod-data.json | jq '.[] | .triples' | sed -e $'s/"//g' | awk '{s+=$1} END {printf "%d\n", s}'

mommi84

#!/usr/bin/env python
import http, json, base64
from urllib.request import Request, urlopen
from urllib.parse import urlencode
from urllib.error import HTTPError
from time import time

class PySparql():

    def __init__(this, endpoint, username=None, password=None, buffer_size=10000):

mommi84

#!/usr/bin/env python
from rdflib.plugins.parsers.ntriples import NTriplesParser, Sink

filename = 'input.nt'

class MySink(Sink):
    def triple(self, s, p, o):
        pass

sink = MySink()

mommi84

#!/usr/bin/env bash
#
# USAGE:
#   sudo ./add_swap.sh 4G
#
# SOURCE:
#   https://linuxize.com/post/how-to-add-swap-space-on-ubuntu-18-04/
#
fallocate -l $1 /swapfile
chmod 600 /swapfile

mommi84

# After having extended the SSD size via AWS console:

ubuntu@ip-172-31-46-157:~$ lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop1     7:1    0   18M  1 loop /snap/amazon-ssm-agent/1455
loop2     7:2    0 88.7M  1 loop /snap/core/7396
loop3     7:3    0   89M  1 loop /snap/core/7713
xvda    202:0    0  100G  0 disk 
└─xvda1 202:1    0   50G  0 part /

mommi84

import urllib2, urllib, httplib, json
import sys

MAX_RESULTS = 10000

graph = ""
endpoint = ""

# Execute a SPARQL query.
def sparql_query(query):