Extraction of Temporal Networks from Term Co-Occurrences in Online Textual Sources
نویسندگان
چکیده
منابع مشابه
Extraction of Temporal Networks from Term Co-Occurrences in Online Textual Sources
A stream of unstructured news can be a valuable source of hidden relations between different entities, such as financial institutions, countries, or persons. We present an approach to continuously collect online news, recognize relevant entities in them, and extract time-varying networks. The nodes of the network are the entities, and the links are their co-occurrences. We present a method to e...
متن کاملTerm frequency with average term occurrences for textual information retrieval
In the context of Information Retrieval (IR) from text documents, the term-weighting scheme (TWS) is a key component of the matching mechanism when using the vector space model (VSM). In this paper we propose a new TWS that is based on computing the average term occurrences of terms in documents and it also uses a discriminative approach based on the document centroid vector to remove less sign...
متن کاملExtraction of Informations from Highly Heterogeneous Sources of Textual Data
Extracting informations from multiple sources, highly heterogeneous, of textual data and integrating them in order to provide true information is a challenging research topic in the database area. In order to illustrate problems and solutions, one of the most interesting projects facing this problem, TSIMMIS, is presented. Furthermore, a Description Logics approach , able to provide interesting...
متن کاملOntologies as Expectations of Term Co-occurrences
Vector space models (VSMs) are often employed as mathematical representations of documents for tasks like indexing, information retrieval (IR), filtering and others, where documents are represented as vectors of their index terms or keywords. In a vector space representation, interrelations between individual terms in the vector are not captured. IR tasks like classification or search rely on t...
متن کاملSpatio-Temporal, Mineralogy and Micro-Morphology of Dust Occurrences and Centers with Internal Sources in the Khouzestan Province
Extended abstract 1- Introduction Dust occurrences as natural events are common in arid, semi-arid and desert areas. Investigation of the dust with internal sources in the Khuzestan province including about 15 percent of the dust events coming to the region and the presence of the annual average of 50 times of the internal dust (with the concentration maximum of PM10 particles more than 8000p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: PLoS ONE
سال: 2014
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0099515