VNU Journal of Science: Computer Science and Communication Engineering
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Toward an Interactive Method for DMEA-II and Application to the Spam-Email Detection System
VNU Journal of Science: Computer Science and Communication Engineering - Tập 30 Số 4 - 2015
Multi-Objective Evolutionary Algorithms (MOEAs) have shown a great potential in
dealing with many real-world optimization problems. There has been a popular
trend in getting suitable solutions and increasing the convergence of MOEAs by
consideration of Decision Makers (DMs) during the optimization process (in other
words interacting with DM). Activities of DM includes checking, analyzing the
resul...
A Big Data Analytics Framework for IoT Applications in the Cloud
VNU Journal of Science: Computer Science and Communication Engineering - Tập 31 Số 2 - 2015
The Internet of Things (IoT) is an evolution of connected networks including
million chatty embedded devices. A huge amount of data generated day by day by
things must be aggregated and analyzed with technologies of the "Big Data
Analytics". It requires coordination of complex components deployed both on
premises and Cloud platforms. This article proposes BDAaaS, a flexibly adaptive
cloud-based fr...
ViMRC - VLSP 2021: Context-Aware Answer Extraction in Vietnamese Question Answering
VNU Journal of Science: Computer Science and Communication Engineering - Tập 38 Số 2 - 2022
MRC is challenging the natural language processing fields; machines
automatically have to answer questions based on specific passages for this task.
In recent years, machine reading comprehension (MRC) has received much
attention; many articles have been written about this task. However, most of
those articles only develop models in two main languages, English and Chinese.
In this article, we prop...
Abbreviation Detection in Vietnamese Clinical Texts
VNU Journal of Science: Computer Science and Communication Engineering - Tập 34 Số 2 - 2018
Abbreviations have been widely used in clinical notes because generating
clinical notes often takes place under high pressure with lack of writing time
and medical record simplification. Those abbreviations limit the clarity and
understanding of the records and greatly affect all the computer-based data
processing tasks. In this paper, we propose a solution to the abbreviation
identification task ...
Some Propositions to Improve the Prediction Capability of Word Confidence Estimation for Machine Translation
VNU Journal of Science: Computer Science and Communication Engineering - Tập 30 Số 3 - 2014
Word Confidence Estimation (WCE) is the task of predicting the correct and
incorrect words in the MT output. Dealing with this problem, this paper proposes
some ideas to build a binary estimator and then enhance its prediction
capability. We integrate a number of features of various types (system based,
lexical, syntactic and semantic) into the conventional feature set, to build our
classifier. Af...
SV - VLSP2021: The Smartcall - ITS’s Systems
VNU Journal of Science: Computer Science and Communication Engineering - Tập 38 Số 1 - 2022
This paper presents the Smartcall - ITS’s systems submitted to the Vietnamese
Language and Speech Processing, Speaker Verification (SV) task. The challenge
consists of two tasks focusing on the development of SV models with limited data
and testing the robustness of SV systems. In both tasks, we used various
pre-trained speaker embedding models with different architectures: TDNN,
Resnet34. After a...
A Novel Combination of Negative and Positive Selection in Artificial Immune Systems
VNU Journal of Science: Computer Science and Communication Engineering - Tập 31 Số 1 - 2015
Artificial Immune System (AIS) is a multidisciplinary research area that
combines the principles of immunologyand computation. Negative Selection
Algorithms (NSA) is one of the most popular models of AIS mainly designed for
one-class learning problems such as anomaly detection. Positive
Selection Algorithms (PSA) is the twin brother of NSA with quite
similar performance for AIS. Both NSAs and ...
Selection of Appropriate Number of CRs in Cooperative Spectrum Sensing over Suzuki Fading
VNU Journal of Science: Computer Science and Communication Engineering - Tập 32 Số 2 - 2016
With the rapid development of wireless communications, the radio spectrum is
becoming scarce. However, researchers have shown that many portions of licensed
spectrum remain unused for significant periods of time. Recently, cognitive
radio has been proposed as a very eective mechanism which allows Cognitive
Radio Users, or CRs to utilize the idle unused licensed bands.The main challenge
for a CR ...
Combining Power Allocation and Superposition Coding for an Underlay Two-way Decode-and-forward Scheme
VNU Journal of Science: Computer Science and Communication Engineering - Tập 37 Số 1 - 2021
In this paper, we analyze an underlay two-way decode-and-forward scheme in which
secondary relays use successive interference cancellation (SIC) technology to
decode data of two secondary sources sequentially, and then generate a coded
signal by superposition coding (SC) technology, denoted as SIC-SC protocol. The
SIC-SC protocol is designed to operate in two time slots under effects from an
inter...
Hyper-volume Evolutionary Algorithm
VNU Journal of Science: Computer Science and Communication Engineering - Tập 32 Số 1 - 2016
We propose a multi-objective evolutionary algorithm (MOEA), named the
Hyper-volume Evolutionary Algorithm (HVEA). The algorithm is characterised by
three components. First, individual fitness evaluation depends on the current
Pareto front, specifically on the ratio of its dominated hyper-volume to the
current Pareto front hyper-volume, hence giving an indication of how close the
individual is to t...
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