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- 저자 : Tran Phuoc Duy (검색결과 4 건)
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Using Syntax and Shallow Semantic Analysis for Vietnamese Question Generation
Phuoc Tran,Duy Khanh Nguyen,Tram Tran,Bay Vo 한국인터넷정보학회 2023 KSII Transactions on Internet and Information Syst Vol.17 No.10
This paper presents a method of using syntax and shallow semantic analysis for Vietnamese question generation (QG). Specifically, our proposed technique concentrates on investigating both the syntactic and shallow semantic structure of each sentence. The main goal of our method is to generate questions from a single sentence. These generated questions are known as factoid questions which require short, fact-based answers. In general, syntax-based analysis is one of the most popular approaches within the QG field, but it requires linguistic expert knowledge as well as a deep understanding of syntax rules in the Vietnamese language. It is thus considered a high-cost and inefficient solution due to the requirement of significant human effort to achieve qualified syntax rules. To deal with this problem, we collected the syntax rules in Vietnamese from a Vietnamese language textbook. Moreover, we also used different natural language processing (NLP) techniques to analyze Vietnamese shallow syntax and semantics for the QG task. These techniques include: sentence segmentation, word segmentation, part of speech, chunking, dependency parsing, and named entity recognition. We used human evaluation to assess the credibility of our model, which means we manually generated questions from the corpus, and then compared them with the generated questions. The empirical evidence demonstrates that our proposed technique has significant performance, in which the generated questions are very similar to those which are created by humans.
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The first years of liver transplantation: experiences at a single center
Phu Hong Pham,Nghia Phuoc Phan,Viet Doan Khac Tran,Viet Quoc Dang,Thuan Duc Nguyen,Long Cong Duy Tran,Bac Hoang Nguyen 대한이식학회 2022 Korean Journal of Transplantation Vol.36 No.2
Background: The aim of this study was to analyze the first stages of progress in liver transplantation (LT) at a single center in Vietnam. Methods: This study analyzed data from patients and donors who participated in the LT program between August 2018 and December 2021 at University Medical Center, Ho Chi Minh City. Study measures included any difficulties encountered, as well as the post- LT outcomes for living donor LT (LDLT) and deceased donor LT (DDLT). The chi-square test and Kaplan Meier survival analysis were used to test the factors that influenced the outcomes. Results: A total of 18 adult recipients with LT (LDLT, n=16; DDLT, n=2) were included (mean age, 55.2±2.6 years; male, 88.9%). The most common post-LT complications were middle hepatic venous stenosis (20%) and graft rejection (22.2%). These compli- cations were observed in LDLT patients. For DDLT, graft rejection (50%) was the only complication recorded. The survival rates for recipients at 3 months, 6 months, and 1 year were 100%, 88.9%, and 88.9%, respectively. The LDs had their right livers without the middle hepatic veins harvested, and biliary leakage (6.25%) was the only complica- tion observed. There were no deaths among recipients or LDs during the operations or hospital stays. Conclusions: This study provides key details about the process of LT, and these positive outcomes support LT as an important therapy for end-stage liver disease and early he- patocellular carcinomas.
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Pham Ngoc Son,Tran Trung Duy,Pham Viet Tuan,Tan-Phuoc Huynh Electronics and Telecommunications Research Instit 2023 ETRI Journal Vol.45 No.1
We propose short packet communication in an underlay cognitive radio network assisted by an intelligent reflecting surface (IRS) composed of multiple reconfigurable reflectors. This scheme, called the IRS protocol, operates in only one time slot (TS) using the IRS. The IRS adjusts its phases to give zero received cumulative phase at the secondary destination, thereby enhancing the end-to-end signal-to-noise ratio. The transmitting power of the secondary source is optimized to simultaneously satisfy the multi-interference constraints, hardware limitations, and performance improvement. Simulation and analysis results of the average block error rates (BLERs) show that the performance can be enhanced by installing more reconfigurable reflectors, increasing the blocklength, lowering the number of required primary receivers, or sending fewer information bits. Moreover, the proposed IRS protocol always outperforms underlay relaying protocols using two TSs for data transmission, and achieves the best average BLER at identical transmission distances between the secondary source and secondary destination. The theoretical analyses are confirmed by Monte Carlo simulations.
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Structural defects and thermodynamics of vitreous GeO_2 nanoparticles
Vo Van Hoang,Tran Phuoc Duy 한국물리학회 2011 Current Applied Physics Vol.11 No.3
Structural defects and thermodynamics of vitreous GeO_2 nanoparticles have been studied in spherical models of different sizes ranged from 2 to 5 nm. Models have been obtained by cooling from the melts via using molecular dynamics (MD) method with the ab initio pair interatomic potentials. Structural properties were investigated via partial radial distribution function (PRDF), interatomic distances, bondangle and coordination number distributions. Surface and core structure of amorphous GeO_2 nanoparticles have been studied in details. Structural defects and their role in structure and properties of nanoparticles have been analyzed and discussed. We found temperature (and size) dependence of potential energy, surface energy of GeO_2 nanoparticles. We also found the size dependence of glass transition temperature of nanoparticles.
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