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2016 19th International Conference on Computer and Information Technology (ICCIT)最新文献

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Protein structure prediction using chemical reaction optimization 利用化学反应优化技术预测蛋白质结构
Pub Date : 2016-12-01 DOI: 10.1007/978-981-13-1951-8_53
Sajib Chatterjee, Resheta Ahmed Smrity, Md. Rafiqul Islam
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引用次数: 6
Characterization of low index Si waveguides 低折射率硅波导的特性
Pub Date : 2016-12-01 DOI: 10.1109/ICCITECHN.2016.7860179
B. Barua, S. Majumder, A. Melloni
In recent years, silicon photonics has attracted attention as an emerging technology for optical telecommunications and for optical interconnects in microelectronics. The refractive index contrast plays a fundamental role in determining the characteristics of an optical dielectric waveguide and a higher index contrast permits to move towards larger scales of integration and to access new devices and functionalities. But high contrast waveguides are more difficult to realize and more critical but there are no serious impediments in their use. The aim of this contribution is to investigate the dependence of the waveguide characteristics with respect to the index contrast and explore the difficulties. In this paper, the impact of the index contrast on the characteristics of dielectric waveguides such as single mode regime, losses, fiber to waveguide coupling, technological constraints and available materials are investigated. The investigation shows that the dependence of the sensitivity in optical waveguide sensors on the polarization of guided modes is less in small refractive index difference waveguide compare than the silicon on silica waveguides but it provide flexibility to the design engineers.
近年来,硅光子学作为一种新兴的光通信技术和微电子领域的光互连技术受到了广泛的关注。折射率对比在决定光介质波导的特性中起着基本的作用,较高的折射率对比允许向更大的集成规模移动,并获得新的设备和功能。但高对比度波导的实现难度更大,也更关键,但在使用上没有严重的障碍。本贡献的目的是研究波导特性对折射率对比度的依赖关系,并探讨困难。本文研究了折射率对比对介质波导单模态、损耗、光纤与波导耦合、技术限制和可用材料等特性的影响。研究表明,在小折射率差波导中,光波导传感器的灵敏度对导模偏振的依赖性比硅上硅小,但它为设计工程师提供了灵活性。
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引用次数: 2
A bug assignment technique based on bug fixing expertise and source commit recency of developers 一种基于bug修复专业知识和开发人员源代码提交时间的bug分配技术
Pub Date : 2016-12-01 DOI: 10.1109/ICCITECHN.2016.7860265
Afrina Khatun, K. Sakib
Automatic bug assignment is an essential activity aiming at assigning bugs to appropriate developers. Existing approaches consider either recent commits or previous bug fixes of developers, leading to recommendation of inexperienced or inactive developers respectively. Considering only one information source leads these approaches to low prediction accuracy. An approach called ERBA is proposed, which considers both expertise and recent activities of developers. ERBA first processes source code and commit logs to construct an index connecting the source entities with developer recent activities. Next, it takes fixed bug reports and builds another index, mapping the bug report keywords with developer bug fixing expertise. On arrival of new bug reports, the final module queries the two indexes using the new bug report terms, and applies tf-idf technique on the query result to calculate an ERBA score for developers. Finally, an ascending ordered list on ERBA score is suggested. For assessment of competency, a case study has been conducted on Eclipse JDT. It depicts that ERBA outperforms existing approach by improving prediction accuracy from 33.8% upto 44%. The result also represents that ERBA shows the first correct developer on average near 4.04 ranks, whereas existing approach shows in 7.27.
自动错误分配是一项重要的活动,旨在将错误分配给适当的开发人员。现有的方法要么考虑开发人员最近的提交,要么考虑以前的错误修复,从而分别推荐缺乏经验的开发人员或不活跃的开发人员。仅考虑一个信息源导致这些方法的预测精度较低。提出了一种称为ERBA的方法,它考虑了开发人员的专业知识和最近的活动。ERBA首先处理源代码和提交日志,以构造一个索引,将源实体与开发人员最近的活动连接起来。接下来,它获取修复的bug报告并构建另一个索引,将bug报告关键字与开发人员修复bug的专业知识进行映射。在收到新的bug报告时,最后一个模块使用新的bug报告术语查询这两个索引,并对查询结果应用tf-idf技术,为开发人员计算ERBA分数。最后,提出了ERBA分数的升序排序方法。为了评估能力,对Eclipse JDT进行了一个案例研究。它描述了ERBA通过将预测精度从33.8%提高到44%而优于现有方法。结果还表明,ERBA显示第一个正确的开发人员的平均排名接近4.04,而现有方法显示的排名为7.27。
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引用次数: 9
Design of a split P-shaped multiband microstrip patch antenna for modern communication system 用于现代通信系统的分离式p形多波段微带贴片天线设计
Pub Date : 2016-12-01 DOI: 10.1109/ICCITECHN.2016.7860169
Md. Jubaer Alam, M. Faruque, Md. Moinul Islam
A fictional design of a compact microstrip patch antenna for multiband frequency has been depicted in this paper. The proposed design presents a slit P-shaped antenna that operates at 3.5 GHz, 5.9 GHz, 9.2 GHz and 13.1 GHz. FR-4 (lossy) is used as substrate to design the recommended antenna which has a firm dimension of 18 × 20 mm2. This antenna operates at S, C, X and Ku band with moderate bandwidth because of its design and feedline. This P-shaped multiband antenna has directive gain of 3.3dBi, 4.9 dBi, 6.5 dBi and 7.1 dBi at resonating frequencies and is suitable for a modern communication system. Regarding this antenna, the results are obtained in terms of Return Loss, Voltage Standing Wave ratio, Gain and Radiation Pattern which have admissible values of return loss less than −10 dB, VSWR less than 2 at each resonant frequencies and Gain more than 3 dB.
本文描述了一种用于多频带频率的小型微带贴片天线的虚拟设计。该设计提出了一种工作频率为3.5 GHz、5.9 GHz、9.2 GHz和13.1 GHz的裂隙p形天线。采用FR-4(有损)作为衬底设计推荐的天线,其固定尺寸为18 × 20 mm2。该天线工作在S, C, X和Ku波段,由于其设计和馈线,带宽适中。该p型多波段天线在谐振频率下的方向性增益分别为3.3、4.9、6.5和7.1 dBi,适用于现代通信系统。该天线的回波损耗、电压驻波比、增益和辐射方向图的允许值均小于- 10 dB,各谐振频率的驻波比小于2,增益大于3 dB。
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引用次数: 7
Security enhancement in the receive diversity with co-operative relay for wireless networks 无线网络中协同中继对接收分集安全性的增强
Pub Date : 2016-12-01 DOI: 10.1109/ICCITECHN.2016.7860211
M. Sarkar, T. K. Roy, M. Sarkar, J. R. Mou
In this paper, a dual hop diversity communication system which is highly confidential for wireless applications is proposed to transmit the secret information from the source to receiver in the presence of interferences. In this proposed wireless communication system, the receiver is equipped with multiple antennas whereas the relays and interference are equipped with single antenna. The output signal is combined with a maximum ratio combiner (MRC) and then process it by the weighting vector and finally amplifying the receive signal by the relays. To do that the amplify-and-forward (AF) as well as decode-and forward (DF) strategies of the relays are used to increase the signal strength of the receive diversity and relay gain. Moreover, moment generating function (MGF) is used to maximize the diversity order for increasing the capacity of the receive signal and symbol error probability (SEP). Finally, the Monte Carlo simulation model is used to show the effectiveness of the proposed technique. From the simulation results, it is clear that the receive signal capacity can be significantly optimized in terms of SEP by using the AF, and DF strategies.
本文提出了一种高保密性的双跳分集通信系统,用于无线应用中在存在干扰的情况下将保密信息从源端传输到接收端。在该无线通信系统中,接收机采用多天线,而中继和干扰采用单天线。输出信号与最大比合成器(MRC)合并,然后通过加权向量进行处理,最后通过继电器放大接收信号。为了实现这一目标,采用了中继的放大和转发(AF)以及解码和转发(DF)策略来增加接收分集的信号强度和中继增益。此外,利用矩生成函数(MGF)最大化分集阶数,提高接收信号容量和码元误码率(SEP)。最后,通过蒙特卡罗仿真模型验证了该方法的有效性。从仿真结果可以看出,采用AF和DF策略可以显著优化接收信号容量的SEP。
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引用次数: 5
Neighbourhood consistency based deep domain adaption analysis for multi category object detection 基于邻域一致性的深度域自适应多类别目标检测
Pub Date : 2016-12-01 DOI: 10.1109/ICCITECHN.2016.7860230
B. Pal, Boshir Ahmed
Pattern classification in domains that follow dissimilar distribution and where target domain has insufficient labelled samples, requires transfer of knowledge across domains through a process called domain adaption. Deep learning research demonstrates the transferability of deep convolutional features that are activations of intermediate layers of convolutional neural networks for domain adaption. Traditional clustering based domain adaption approaches are practical to handle knowledge transfer scenario. This paper presents a scheme that uses local neighborhoods based consistency analysis of one supervised and another unsupervised model to effectively transfer knowledge using deep features. Contrasting conventional models this approach uses only two models to classify patterns except hard ones. Neighbourhood consistency analysis identifies the hard samples, and is classified using a third model. Experimental analysis has been carried out focusing change on category variation of different samples for train and test cases. The proposed approach yields encouraging experimental result on benchmark domain adaption dataset compared to a deep feature based single support vector machine classifier in terms of state of the art metrics demonstrating effective generalization of source domain information.
在遵循不相似分布的领域和目标领域没有足够的标记样本时,模式分类需要通过称为领域适应的过程跨领域传递知识。深度学习研究证明了深度卷积特征的可转移性,这些特征是卷积神经网络用于域适应的中间层的激活。传统的基于聚类的领域自适应方法在处理知识转移场景时是可行的。本文提出了一种基于局部邻域的有监督模型和无监督模型的一致性分析方案,利用深度特征有效地转移知识。与传统模型相比,这种方法只使用两个模型来对模式进行分类,除了硬模型。邻域一致性分析识别硬样本,并使用第三种模型进行分类。针对训练用例和测试用例的不同样本类别变化进行了实验分析。与基于深度特征的单支持向量机分类器相比,该方法在基准域自适应数据集上取得了令人鼓舞的实验结果,证明了源域信息的有效泛化。
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引用次数: 0
Know your customer (KYC) based authentication method for financial services through the internet 通过互联网了解基于客户(KYC)的金融服务认证方法
Pub Date : 2016-12-01 DOI: 10.1109/ICCITECHN.2016.7860255
P. Mondal, Rupam Deb, M. N. Huda
Financial services through the internet are running under various threats like phishing, pharming (cyber attack intended to redirect a website's traffic to another fake site), malware, and evolving sophistication of compromise techniques. Multi-factor authentication (MFA) financial service system alleviates the risk and makes it secure. Various methods of MFA run in troubles like the authentication device lost or stolen, false sense of security (if used on login device), compromised answer of the generic question, higher implementation costs, unambiguous movement profile, calculated hash value stolen (there is no chance to replace it), etc. Compliance with Anti-Money Laundering (AML), Know Your Customer (KYC) and sanction requirements continue to be a key focus area for Financial Institutions' (FIs) management; firms must ensure that they are following appropriate compliance procedures to meet the increasing regulatory demands [1,2]. By addressing existing limitation of MFA, this paper proposes dynamic KYC based MFA authentication method to ensure the secured access of the financial services through the internet. Analysis and simulation results show that the proposed method provides control same as existing MFA/2FA techniques, but customers will get relief from holding additional security devices that incur huge cost.
互联网上的金融服务面临着各种各样的威胁,比如网络钓鱼、网络欺诈(旨在将一个网站的流量重定向到另一个虚假网站的网络攻击)、恶意软件和不断发展的复杂的折衷技术。多因素认证(MFA)金融服务系统降低了风险,提高了安全性。MFA的各种方法在运行时会遇到麻烦,比如身份验证设备丢失或被盗、错误的安全感(如果在登录设备上使用)、通用问题的答案泄露、更高的实现成本、明确的移动配置文件、计算的哈希值被盗(没有机会替换它)等。遵守反洗钱(AML)、了解客户(KYC)和制裁要求仍然是金融机构(fi)管理的重点领域;公司必须确保他们遵循适当的合规程序,以满足日益增长的监管要求[1,2]。针对MFA存在的局限性,提出了一种基于动态KYC的MFA认证方法,以保证金融服务通过互联网的安全访问。分析和仿真结果表明,该方法提供了与现有MFA/2FA技术相同的控制,但客户将不必持有额外的安全设备,从而产生巨大的成本。
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引用次数: 11
Word embedding with hellinger PCA to detect the sentiment of bengali text 用hellinger PCA进行词嵌入,检测孟加拉语文本的情感
Pub Date : 2016-12-01 DOI: 10.1109/ICCITECHN.2016.7860224
Md Saiful Islam, Md Al Amin, Shapan Das Uzzal
The sentiment of a sentence or a comment can be detected more accurately by applying Word Embeddings. This article presents the idea of word co-occurrence matrix and Skip-Gram to determine the actual contexts of the words, Hellinger PCA to determine the most similar words and generate a sliding window of most probable context words around each word. It is shown that, by applying Word Embeddings to classify the sentiment of a comment achieves higher accuracy with larger corpus. For our corpus of 2500 comments, the accuracy achieved is 70%, which is rapidly increasing with the size of the corpus.
通过应用词嵌入可以更准确地检测句子或评论的情感。本文提出了单词共现矩阵和Skip-Gram的思想来确定单词的实际上下文,Hellinger PCA来确定最相似的单词,并在每个单词周围生成最可能的上下文单词的滑动窗口。结果表明,在语料库较大的情况下,应用词嵌入对评论情感进行分类可以获得更高的准确率。对于2500条评论的语料库,准确率达到了70%,随着语料库的规模迅速增加。
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引用次数: 15
Optimal route selection in complex multi-stage supply chain networks using SARSA(λ) 基于SARSA(λ)的复杂多级供应链网络最优路径选择
Pub Date : 2016-12-01 DOI: 10.1109/ICCITECHN.2016.7860190
A. Habib, Muhidul Islam Khan, J. Uddin
Success of any supply chain highly depends on the appropriate use of transportation. It is always a tough decision to select an optimal route in the stages of a supply chain that will balance the reverse condition of cost and time. Q-learning is already getting implied to optimize routes, but it greatly lacks in designing a complete Markov Decision Process (MDP) with enough number of states and actions sets. In this paper, we propose an MDP that can fit the design of a proper multi-stage supply chain network and intend to solve the MDP with SARSA (X) algorithm. The algorithm was simulated in a java based environment and experimental results show that Q-learning produced higher chunks of rewards but SARSA (X) was faster in case of convergence speed.
任何供应链的成功在很大程度上取决于运输的适当使用。在供应链的各个阶段中选择一条最优路线,以平衡成本和时间的反向条件,一直是一个艰难的决定。Q-learning已经被用于优化路径,但它在设计一个具有足够数量的状态和动作集的完整马尔可夫决策过程(MDP)方面非常缺乏。在本文中,我们提出了一个适合多阶段供应链网络设计的MDP,并打算用SARSA (X)算法求解MDP。在java环境下对该算法进行了仿真,实验结果表明,Q-learning产生的奖励块更高,而SARSA (X)在收敛速度方面更快。
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引用次数: 9
Weighted normalized mutual information based change detection in remote sensing images 基于加权归一化互信息的遥感图像变化检测
Pub Date : 2016-12-01 DOI: 10.1109/ICCITECHN.2016.7860205
M. Aktar, M. Mamun, M. Hossain, M. S. R. Shuvo
Change detection from remote sensing images is getting more interest now a days because of abrupt changes in earth surface due to natural disasters or man-made activities. So it's an important research question of how to extract relevant information about the changes due to rainfall, droughts, flooding, destroying land cover areas and so on. This problem has been studied in some research however many of these did not consider the nonlinear relationship while detecting the changes. In this research, above limitation has been addressed and Weighted Normalized Mutual Information (WNMI) is utilized for the improvement. The WNMI technique has been applied between the reference and target images to find out the changes. Thus the changes between every object of the given dataset have been identified and able to observe the damage of any specific area as well as its subsequent recovery. Weighting has been done to count significance at the pixel level. The proposed technique can detect the changes more effectively than the traditional mutual information approach. Experimental analysis is carried on real remote sensing images and it is found that the proposed method can detect more than 96% of changes which is much better than the standard benchmark techniques.
由于自然灾害或人为活动引起的地球表面突变,遥感图像的变化检测越来越受到人们的关注。因此,如何提取降雨、干旱、洪水、破坏土地覆盖面积等变化的相关信息是一个重要的研究问题。虽然已有一些研究对这一问题进行了研究,但许多研究在检测变化时没有考虑非线性关系。本研究针对上述局限性,利用加权归一化互信息(WNMI)进行改进。在参考图像和目标图像之间应用WNMI技术来发现图像的变化。因此,已经确定了给定数据集的每个对象之间的变化,并能够观察任何特定区域的损害及其随后的恢复。加权是为了在像素水平上计算显著性。该方法可以比传统的互信息方法更有效地检测到变化。在真实遥感图像上进行了实验分析,结果表明,该方法能检测出96%以上的变化,大大优于标准基准技术。
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引用次数: 6
期刊
2016 19th International Conference on Computer and Information Technology (ICCIT)
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