Results 71 to 80 of about 8,738,264 (288)

Subgraph Reasoning on Temporal Knowledge Graphs for Forecasting Based on Relaxed Temporal Relations

Mathematics
Reasoning over Temporal Knowledge Graphs (TKGs) aims to forecast future events based on historical ones. Existing approaches typically enforce strict temporal order constraints among past events; however, such rigidity limits the effective exploitation ...
Meini Yang, Kerong Ben, Tao He, Feipeng Wang   +3 more
doaj   +1 more source

Bio‐Inspired Artificial Ionic Mechanoreceptor

Advanced Functional Materials, EarlyView.
A skin‐inspired artificial mechanoreceptor based on ionic interactions is presented for biomimetic tactile sensing. Pressure‐driven ionic redistribution within microfluidic channels generates a self‐powered electrical signal without external bias. The generated waveform exhibits mechanoreceptor‐like temporal features, including overshoot and undershoot,
Mohammad Akbari, Jeppe Don, Lasse A. N. Pedersen, John Noee, Rassoul Tabassian   +4 more
wiley   +1 more source

Semantic perspectives for learning over biomedical knowledge graphs

, 2023
Knowledge graphs represent an unparalleled opportunity for machine learning in the biomedical domain, given their ability to enrich data with meaningful context through semantic representations, such as knowledge graph embeddings and semantic similarity.
Sousa, Rita Isabel Torres de
core  

TeCoRe: temporal conflict resolution in knowledge graphs [PDF]

, 2017
The management of uncertainty is crucial when harvesting structured content from unstructured and noisy sources. Knowledge Graphs (kgs), maintaining both numerical and non-numerical facts supported by an underlying schema, are a prominent example ...
Chekol, Melisachew Wudage, Chekol, MW, Schoenfisch, J, Pirro, G, Pirrò, Giuseppe, Stuckenschmidt, H, Joerg Schoenfisch, Schönfisch, Jörg, Melisachew W. Chekol, Heiner Stuckenschmidt, Giuseppe Pirrò, Stuckenschmidt, Heiner   +11 more
core   +1 more source

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source

Dynamic subgraph pruning and causal-aware knowledge distillation for temporal knowledge graphs

Journal of King Saud University: Computer and Information Sciences
Temporal Knowledge Graph (TKG) reasoning has attracted attention for its ability to capture temporal evolution patterns and improve computational efficiency. However, existing methods still encounter challenges in entity and relation prediction tasks. To
Qian Liu, Siling Feng, Mengxing Huang
doaj   +1 more source

Time-Aware Probabilistic Knowledge Graphs [PDF]

, 2019
The emergence of open information extraction as a tool for constructing and expanding knowledge graphs has aided the growth of temporal data, for instance, YAGO, NELL and Wikidata.
Chekol, Melisachew Wudage, Stuckenschmidt, Heiner   +1 more
core   +1 more source

Sub‐1 ms Optoelectronic Synapse Based on {ZnCdO/ZnO} Multilayer Structure for High‐Speed Neuromorphic Vision Systems

Advanced Functional Materials, EarlyView.
Eu‐doped {ZnCdO/ZnO} structures grown on Si are developed, showcasing dual‐functionality controlled by europium doping. While high europium concentration transforms the device into an ultrafast, self‐powered photodetector, low‐doped structures can be used as an optoelectronic synapse.
Igor Perlikowski, Eunika Zielony, Adrian Kaim, Ewa Przeździecka   +3 more
wiley   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

MTS-RE-GCN: Multi-Task Methods for Enhanced Spatio-Temporal Reasoning in Temporal Knowledge Graphs

ISPRS International Journal of Geo-Information
Temporal knowledge graphs aim to enhance the dynamic and evolutionary representation of knowledge while enabling time-based reasoning. However, the reasoning based on temporal knowledge graphs in real geographic environments suffers from low accuracy due
Yuhao Huo, Guangyuan Zhang, Bing Han, Xiaochong Tong, Chengqi Cheng   +4 more
doaj   +1 more source