SOWL QL: Querying Spatio - Temporal Ontologies in OWL

We introduce SOWL QL, a query language for spatio-temporal information in ontologies. Buildingupon SOWL (Spatio-Temporal OWL), an ontology for handling spatio-temporal information in OWL, SOWL QL supports querying over qualitative spatio-temporal information (expressed using natural language expressions such as “before”, “after”, “north of”, “south of”) rather than merely quantitative information (exact dates, times, locations). SOWL QL extends SPARQL with a powerful set of temporal and spatial operators, including temporal Allen topological, spatial directional and topological operations or combinations of the above. SOWL QL maintains simplicity of expression and also, upward and downward compatibility with SPARQL. Query translation in SOWL QL yields SPARQL queries implying that, querying spatio-temporal ontologies using SPARQL is still feasible but suffers from several drawbacks the most important of them being that, queries in SPARQL become particularly complicated and users must be familiar with the underlying spatio-temporal representation (the “N-ary relations” or the “4D-fluents” approach in this work). Finally, querying in SOWL QL is supported by the SOWL reasoner which is not part of the standard SPARQL translation. The run-time performance of SOWL QL has been assessed experimentally in a real data setting. A critical analysis of its performance is also presented

The Papyrus Digital Library: Discovering History in the News

Abstract. Digital archives comprise a valuable asset for effective information retrieval. In many cases, however, the special vocabulary of the archive restricts its access only to experts in the domain of the material it contains and, as a result, researchers of other disciplines or the general public cannot take full advantage of the wealth of information it offers. To this end, the Papyrus research project has worked towards a solution which makes cross-discipline search possible in digital libraries. The developed prototype showcases this approach demonstrating how we can discover history in news archives. In this demo we focus on demonstrating two of the end user tools available in the prototype, the cross-discipline search and the Papyrus browser

TrueWeb: A Proposal for Scalable Semantically-Guided Data Management and Truth Finding in Heterogeneous Web Sources

We envision a responsible web environment, termed TrueWeb, where a user should be able to find out whether any sentence he or she encounters in the web is true or false. The user should be able to track the provenance of any sentence or paragraph in the web. The target of TrueWeb is to compose factual knowledge from Internet resources about any subject of interest and present the collected knowledge in chronological order and distribute facts spatially and temporally as well as assign some belief factor for each fact. Another important target of TrueWeb is to be able to identify whether a statement in the Internet is true or false. The aim is to create an Internet infrastructure that, for each piece of published information, will be able to identify the truthfulness (or the degree of truthfulness) of that piece of information. © 2018 ACM

The statistical analysis of acoustic signals of shots on a background of not correlative in time jams detection devices

Приведена методика и результаты статистического анализа двух устройств обнаружения, в которых реализованы статистически полученные оптимальные алгоритмы обработки акустических сигналов выстрелов (разрывов).The technique and results of two detection devices statistical analysis in which statistically received optimum algorithms of shots acoustic signals processing are realized are carried out

Construction sector economic indicators’ analysis using Eora multi-regional input-output tables

Представлен сравнительный анализ развития строительного сектора в мировом масштабе за 1990–2015 гг. на основе данных межрегиональных таблиц «затраты – выпуск» Eora­26. Рассчитаны абсолютные показатели инвестиций в строительство, валового выпуска и валовой добавленной стоимости в этой сфере, на их основе рассчитаны некоторые относительные показатели. Составлены рейтинги экономик мира по показателям развития строительного сектора. The work analysed data of the Eora multi-regional input-output tables for a comparative analysis of the construction sector on a global scale for the period from 1990 to 2015. The absolute indicators of investment in construction, gross output and gross value added in construction are calculated; other relative indicators were calculated on their basis. The ratings of the world’s economies according to the indicators of the development of the construction sector were compiled

Artillery gun fire acoustic signals detection

Проведен статистический синтез алгоритмов обнаружения акустических сигналов выстрелов, распространяющихся у поверхности Земли. В результате синтеза получены два оптимальных устройства обработки принятого сигнала для двух вариантов корреляционных свойств акустического сигнала выстрела. Проведен краткий анализ устройств обработки, реализующих разработанные алгоритмы.The statistical synthesis of algorithm for detection of acoustic firing signals that spread above surface is carried out. As a result of the synthesis two optimal devices for the signal procession are developed. They are for two cases of correlative firing signal. A short analysis of procession devices is made

The Papyrus digital library: Discovering history in the news

Digital archives comprise a valuable asset for effective information retrieval. In many cases, however, the special vocabulary of the archive restricts its access only to experts in the domain of the material it contains and, as a result, researchers of other disciplines or the general public cannot take full advantage of the wealth of information it offers. To this end, the Papyrus research project has worked towards a solution which makes cross-discipline search possible in digital libraries. The developed prototype showcases this approach demonstrating how we can discover history in news archives. In this demo we focus on demonstrating two of the end user tools available in the prototype, the cross-discipline search and the Papyrus browser. © 2011 Springer-Verlag