Št. zadetkov: 13
Video in druga učna gradiva
Oznake:
mathematics;statistics;computer science;machine learning;structured data;semantic web
Statistics are very present in our daily lives. Every day, new statistics are published, showing the perceived quality of living in different cities, the corruption index of different countries, and so on. Interpreting those statistics, on the other hand, is a difficult task. Often, statistics colle ...
Leto:
2012
Vir:
videolectures.net
Video in druga učna gradiva
Oznake:
computer science;semantic web;big data
DBpedia is a central hub of Linked Open Data (LOD). Being based on crowd-sourced contents and heuristic extraction methods, it is not free of errors. In this paper, we study the application of unsupervised numerical outlier detection methods to DBpedia, using Interquantile Range (IQR), Kernel Densit ...
Leto:
2014
Vir:
videolectures.net
Video in druga učna gradiva
Oznake:
computer science;big data;semantic web
Linked Open Data browsers nowadays usually list facts about entities, but they typically do not respect the relatedness of those facts. At the same time, query logs from LOD datasets hold information about
which facts are typically queried in conjunction, and should thus provide a notio ...
Leto:
2015
Vir:
videolectures.net
Video in druga učna gradiva
Oznake:
computer science;big data;semantic web
schema.org is a common data markup schema, pushed by large search engine providers such as Google, Yahoo!, and Bing. To date, a few hundred thousand web site providers adopt schema.org annotations embedded in their web pages via MicroData. Profiling this data reveals interesting insights in the ways ...
Leto:
2015
Vir:
videolectures.net
Video in druga učna gradiva
Oznake:
computer science;information theory;semantic web
Type information is very valuable in knowledge bases. However, most large open knowledge bases are incomplete with respect to type information, and, at the same time, contain noisy and incorrect data. That makes classic type inference by reasoning difficult. In this paper, we propose the heuristic l ...
Leto:
2013
Vir:
videolectures.net
Video in druga učna gradiva
Oznake:
computer science;semantic web
Lots of data from different domains is published as Linked Open Data.
While there are quite a few browsers for that data, as well as intelligent tools for
particular purposes, a versatile tool for deriving additional knowledge by mining
the Web of Linked Data is still missing. In this challenge e ...
Leto:
2014
Vir:
videolectures.net
Video in druga učna gradiva
Oznake:
computer science;semantic web
Large knowledge bases, such as DBpedia, are most often created
heuristically due to scalability issues. In the building process, both
random as well as systematic errors may occur. In this paper, we focus
on finding systematic errors, or anti-patterns, in DBpedia. We show that
by aligning the DB ...
Leto:
2015
Vir:
videolectures.net
Video in druga učna gradiva
Oznake:
computer science;big data;semantic web
Ontology reasoning is typically a computationally intensive
operation. While soundness and completeness of results is required in
some use cases, for many others, a sensible trade-off between computation
efforts and correctness of results makes more sense. In this paper, we
show that it is possi ...
Leto:
2016
Vir:
videolectures.net
Video in druga učna gradiva
Oznake:
computer science;big data;semantic web
DBpedia is a large-scale, cross-domain knowledge graph extracted from Wikipedia. For the extraction, crowd-sourced mappings from Wikipedia infoboxes to the DBpedia ontology are utilized. In this process, different problems may arise: users may create wrong and/or inconsistent mappings, use the ontol ...
Leto:
2017
Vir:
videolectures.net
Video in druga učna gradiva
Oznake:
computer science;semantic web
In the recent years, different web knowledge graphs, both free and commercial, have been created. While Google coined the term “Knowledge Graph” in 2012, there are also a few openly available knowledge graphs, with DBpedia, YAGO, and Freebase being among the most prominent ones. Those graphs are oft ...
Leto:
2017
Vir:
videolectures.net