Results 31 to 40 of about 685,984 (350)
Causal Pathway Extraction from Web-Board Documents
Applied Sciences, 2021 This research aim is to extract causal pathways, particularly disease causal pathways, through cause-effect relation (CErel) extraction from web-board documents.
Chaveevan Pechsiri, Rapepun Piriyakul
doaj +1 more source
Cohomology of moduli spaces of Del Pezzo surfaces
Mathematische Nachrichten, Volume 296, Issue 1, Page 80-101, January 2023., 2023 Abstract We compute the rational Betti cohomology groups of the coarse moduli spaces of geometrically marked Del Pezzo surfaces of degree 3 and 4 as representations of the Weyl groups of the corresponding root systems. The proof uses a blend of methods from point counting over finite fields and techniques from arrangement complements.
Olof Bergvall, Frank Gounelas
wiley +1 more source
buTCS: An Optimized Algorithm for Estimating the Size of Transitive Closure
IEEE Access, 2021 Given a directed graph and a node $v$ , the transitive closure (TC) of $v$ is the set of nodes that $v$ can reach in the graph. TC size is very important in many applications but the cost of TC size computation is high in both time and space, which ...
Xiaozhe Li +3 more
doaj +1 more source
United European Gastroenterology Journal, Volume 10, Issue 9, Page 983-998, November 2022., 2022 Abstract Background There are several options for the surgical management of GERD in adults. Previous guidelines and systematic reviews have compared the effects of total fundoplication versus pooled effects of different techniques of partial fundoplication.
Sheraz Markar +16 more
wiley +1 more source
On the Cost of Transitive Closures in Relational Databases [PDF]
, 1993 We consider the question of taking transitive closures on top of pure relational systems (Sybase and Ingres in this case). We developed three kinds of transitive closure programs, one using a stored procedure to simulate a built-in transitive closure ...
Li, Zhe, Ross, Kenneth A.
core +2 more sources
Complements and transitive closures
Discrete Mathematics, 1972 AbstractThe complement of the transitive closure of the complement of a transitive relation is transitive. We prove this fact in three ways, analyze the underlying structure and consider various refinement's and applications.
Donald E. Knuth +2 more
openaire +2 more sources
Joint HAP deployment and resource allocation for HAP‐UAV‐terrestrial integrated networks
IET Communications, Volume 17, Issue 1, Page 86-97, January 2023., 2023 Abstract While the terrestrial base stations (TBSs) in the fifth‐generation (5G) network provide high throughput for the conventional terrestrial users (TUs), it is still challenging for the network to support massive TUs and unmanned aerial vehicles (UAVs) simultaneously due to the complicated air–ground channel and severe interference. In this paper,
Ang Ji +4 more
wiley +1 more source
Dual digraphs of finite semidistributive lattices
Cubo, 2022 Dual digraphs of finite join-semidistributive lattices, meet-semidistributive lattices and semidistributive lattices are characterised. The vertices of the dual digraphs are maximal disjoint filter-ideal pairs of the lattice.
Andrew Craig +2 more
doaj +1 more source
Topological Properties of Generalized Rough Approximation Operators Based on Objects [PDF]
Jisuanji kexue, 2023 Rough set theory is a mathematical tool to deal with uncertain problems.The core notion of rough set theory is appro-ximation operators.Pawlak approximation operators based on equivalence relations cab be extended to generalized rough approximation ...
LI Yanyan, QIN Keyun
doaj +1 more source
A survey of parallel execution strategies for transitive closure and logic programs [PDF]
, 1993 An important feature of database technology of the nineties is the use of parallelism for speeding up the execution of complex queries. This technology is being tested in several experimental database architectures and a few commercial systems for ...
Cacace, F., Ceri, S., Houtsma, M.A.W.
core +4 more sources