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Imad Ali
Academia Sinica
Patch antennaResponse timeResponse rate (survey)Computer scienceQuestion answering
6Publications
2H-index
12Citations
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Publications 6
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#1Imad Ali (AS: Academia Sinica)H-Index: 2
#2Ronald Y. Chang (AS: Academia Sinica)H-Index: 12
Last. Cheng-Hsin Hsu (NTHU: National Tsing Hua University)H-Index: 23
view all 3 authors...
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#1Imad Ali (AS: Academia Sinica)H-Index: 2
#2Ronald Y. Chang (CIT: Center for Information Technology)H-Index: 12
Last. Cheng-Hsin Hsu (NTHU: National Tsing Hua University)H-Index: 23
view all 3 authors...
Recent research has suggested that answers to the particular questions may be found when the questions are forwarded via suitable friends (or helpers) in a multi-hop manner. In mobile social network-based question answering systems, users are associated with limited resources; therefore, a light-weight scheme is crucial. However, improving the performance of the system with a light-weight scheme is challenging. To this end, we propose a distributed SOcial helpeR selecTion (SORT) scheme where all...
Source
#1Imad Ali (AS: Academia Sinica)H-Index: 2
#2Ronald Y. Chang (CIT: Center for Information Technology)H-Index: 12
Last. Cheng-Hsin Hsu (NTHU: National Tsing Hua University)H-Index: 23
view all 3 authors...
Compared with community-based question answering systems and modern search engines, social network-based question answering systems are more efficient in addressing non-factual questions. In such systems, askers search answerers among their 1-hop neighbors; however, high-quality answerers may exist in the k-hop neighbors of the social networks who are not known to askers directly. To address this problem, we propose a dynamic SOcial network-based Question Answering System (SOQAS) that finds h...
1 CitationsSource
#1Imad Ali (AS: Academia Sinica)H-Index: 2
#2Ronald Y. Chang (CIT: Center for Information Technology)H-Index: 12
Last. Cenk M. Yetis (CIT: Center for Information Technology)H-Index: 6
view all 5 authors...
Social-network-based Question Answering (QA besides, it avoids bottleneck answerers in the network, so as to increase the response rate. We conduct trace- driven simulations, which show that our Q&A system: (i) achieves up to 27% higher average response rate than the state-of-the-art systems, and (ii) reduces the average maximal response time by up to 60%. Moreover, the results show that, by varying the number of answerers, the number of keywords per question, the arrival rate of questions, and ...
2 CitationsSource
May 15, 2016 in VTC (Vehicular Technology Conference)
#1Imad AliH-Index: 2
#2Ronald Y. ChangH-Index: 12
Last. Jenny Yi-Chun LiuH-Index: 13
view all 3 authors...
This paper presents a 60 GHz CPW-fed patch antenna on multilayer LTCC- and LCP-based materials with new and compact AMC. The proposed antenna structure consists of top three layers of antenna and bottom three layers of AMC ground plane. First, a new and compact three- layer AMC is designed on both LTCC- and LCP-based substrates. The designed AMC is more compact and provides 37.5% higher in-phase bandwidth as compared to a state-of-the-art design. Then, a three-layer CPW- fed patch antenna is des...
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Sep 1, 2015 in VTC (Vehicular Technology Conference)
#1Imad Ali (NTHU: National Tsing Hua University)H-Index: 2
#2Ronald Y. Chang (CIT: Center for Information Technology)H-Index: 12
In this paper, we design and analyze a dual-band rectangular microstrip patch antenna with defected ground plane for 2.5 GHz and 3.5 GHz communications. The design concept is to have two slots etched out from the ground plane of a microstrip patch antenna designed for 2.5 GHz operation to enable second frequency band (3.5 GHz) operation. The positions of etched slots are determined using parametric analysis to meet the objectives of large impedance bandwidth and high gains in the desired bands a...
7 CitationsSource
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