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2019 9th International Conference on Computer and Knowledge Engineering (ICCKE)最新文献

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A Novel Method for Detecting Breast Cancer Location Based on Growing GA-FCM Approach 一种基于生长GA-FCM的乳腺癌定位检测新方法
Pub Date : 2019-10-01 DOI: 10.1109/ICCKE48569.2019.8964904
Milad Abaspoor, S. Meshgini, T. Y. Rezaii, A. Farzamnia
The main idea of this article is to provide a numerical diagnostic method for breast cancer diagnosis of the MRI images. To achieve this goal, we used the region’s growth method to identify the target area. In the area’s growth method, based on the similarity or homogeneity of the adjacent pixels, the image is subdivided into distinct areas according to the criteria used for homogeneity analysis to determine their belonging to the corresponding region. In this paper, we used manual methods and use of FCM as the function of genetic algorithm fitness. The presented algorithm is performed for 212 healthy and 110 patients. Results show that GA-FCM method have better performance than hand method to select initial points. The sensitivity of presented method is 0.67. The results of the comparison of the fuzzy fitness function in the genetic algorithm with other technique show that the proposed model is better suited to the Jaccard index with the highest Jaccard values and the lowest Jaccard distance. Among the techniques, the presented works well because of the similarity of techniques and the lowest Jaccard distance. Values close to 0.9 are close to 0.8.
本文的主要思想是为乳腺癌的MRI图像诊断提供一种数值诊断方法。为了实现这一目标,我们使用区域的增长方法来确定目标区域。在区域生长法中,基于相邻像素的相似性或同质性,根据同质性分析所用的准则将图像细分为不同的区域,以确定它们属于相应的区域。在本文中,我们采用手工方法,并使用FCM作为遗传算法适应度的函数。本算法在212名健康患者和110名患者中执行。结果表明,GA-FCM方法在初始点的选取上优于手工方法。该方法的灵敏度为0.67。将遗传算法中的模糊适应度函数与其他方法进行了比较,结果表明所提模型更适合于具有最高Jaccard值和最小Jaccard距离的Jaccard指数。其中,由于技术的相似性和最小的Jaccard距离,所提出的方法效果较好。接近0.9的值接近0.8。
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引用次数: 0
Scheduling Mixed-criticality Systems on Reconfigurable Platforms 可重构平台上的混合临界系统调度
Pub Date : 2019-10-01 DOI: 10.1109/ICCKE48569.2019.8964800
Sadegh Sehhatbakhsh, Yasser Sedaghat
The scheduling for mixed criticality systems, where multiple functionalities with different criticality levels are integrated into a shared hardware platform, is an important research area. Reconfigurable platforms, which combine the advantages of software flexibility and performance efficiencies, are recognized as a suitable processing platform for real-time embedded systems. In this paper, we consider the scheduling of mixed criticality systems with two criticality levels on reconfigurable platforms. Partitioned fixed-priority preemptive scheduling is used to schedule tasks. Since the context switch overhead in reconfigurable platforms is not as small as that of multiprocessors, it has been taken into account in our schedulability analysis. Furthermore, a context-switch-aware partitioning algorithm is presented to improve the schedulability of tasks in platforms that context switch cost cannot be neglected. The experiments results show that our proposed partitioning algorithm gives higher schedulability ratios when compared to the classical partitioning algorithms.
混合临界系统是将不同临界水平的多种功能集成到一个共享的硬件平台上的系统,其调度是一个重要的研究领域。可重构平台结合了软件灵活性和性能效率的优点,被认为是一种适合实时嵌入式系统的处理平台。研究了可重构平台上具有两个临界级别的混合临界系统的调度问题。采用分区固定优先级抢占调度方式调度任务。由于可重构平台中的上下文切换开销不像多处理器那样小,因此在可调度性分析中已经考虑到了这一点。此外,为了提高上下文切换代价不容忽视的平台上任务的可调度性,提出了一种上下文切换感知的分区算法。实验结果表明,与传统的分区算法相比,本文提出的分区算法具有更高的可调度性。
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引用次数: 1
An LSTM Auto-Encoder for Single-Channel Speaker Attention System 用于单通道说话人注意系统的LSTM自编码器
Pub Date : 2019-10-01 DOI: 10.1109/ICCKE48569.2019.8965084
Mahnaz Rahmani, F. Razzazi
In this paper, we utilized a set of long short term memory (LSTM) deep neural networks to distinguish a particular speaker from the rest of the speakers in a single channel recorded speech. The structure of this network is modified to provide the suitable result. The proposed architecture models the sequence of spectral data in each frame as the key feature. Each network has two memory cells and accepts an 8 band spectral window as the input. The results of the reconstructions of different bands are merged to rebuild the speaker’s utterance. We evaluated the intended speaker's reconstruction performance of the proposed system with PESQ and MSE measures. Using all utterances of each speaker in TIMIT dataset as the training data to build an LSTM based attention auto-encoder model, we achieved 3.66 in PESQ measure to rebuild the intended speaker. In contrast, the PESQ was 1.92 in average for other speakers when we used the mentioned speaker’s network. This test was successfully repeated for different utterances of different speakers.
在本文中,我们利用一组长短期记忆(LSTM)深度神经网络来区分单通道语音中的特定说话者和其他说话者。对该网络的结构进行了修改,以获得合适的结果。该体系结构将每帧中的光谱数据序列作为关键特征进行建模。每个网络有两个存储单元,并接受8波段光谱窗口作为输入。将不同波段的重建结果合并,重建说话人的话语。我们用PESQ和MSE指标评估了所提出系统的预期说话人重建性能。使用TIMIT数据集中每个说话人的所有话语作为训练数据,构建基于LSTM的注意力自编码器模型,我们的PESQ测量值达到3.66,重建目标说话人。相比之下,当我们使用上述说话者的网络时,其他说话者的PESQ平均值为1.92。这个测试成功地重复了不同说话者的不同话语。
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引用次数: 1
Efficiency Improvement of Differential Evolution Algorithm Using a Novel Mutation Method 利用一种新的变异方法提高差分进化算法的效率
Pub Date : 2019-10-01 DOI: 10.1109/ICCKE48569.2019.8964840
Milad Ghahramani, Abolfazl Laakdashti
The differential evolution algorithm is one of the fast, efficient, and strong population-based algorithms, which has extended applications in solving various problems. Although the velocity, power, and efficiency of this algorithm have been demonstrated in solving many optimization problems, this algorithm, like other metaheuristic algorithms, is not guaranteed to achieve the global optimal points of the optimization problems and may be ceased at optimal local points. One of the reasons for stopping the algorithm at the local optimum points is the imbalance between the exploration and exploitation abilities of the algorithm. One of the operators of the differential evolution algorithm, which plays an essential role in establishing the proper balance between the exploitation and exploitation of the algorithm, is the mutation operator. In this paper, a new mutation method is proposed to improve the efficiency of the differential evolution algorithm to make an appropriate balance between the exploitation and exploitation abilities of the algorithm. Comparing the results of the proposed mutation method with other mutation methods indicates that the proposed method has better speed and accuracy convergence rather than other methods, and it can be employed to solve large-scale optimization problems.
差分进化算法是一种快速、高效、强的基于种群的算法,在求解各种问题中得到了广泛的应用。虽然该算法的速度、功率和效率在解决许多优化问题中得到了证明,但与其他元启发式算法一样,该算法不能保证达到优化问题的全局最优点,并且可能在局部最优点处停止。算法在局部最优点处停止的原因之一是算法的探索能力和开发能力不平衡。变异算子是差分进化算法的算子之一,它对建立算法的利用和利用之间的适当平衡起着至关重要的作用。本文提出了一种新的突变方法来提高差分进化算法的效率,在算法的开发和开发能力之间取得适当的平衡。将所提出的变异方法与其他变异方法的结果进行比较,结果表明所提出的变异方法具有更好的速度和收敛精度,可用于解决大规模的优化问题。
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引用次数: 1
Boost PFC Converter Control using Fractional Order Fuzzy PI Controller Optimized via ICA 基于ICA优化的分数阶模糊PI控制器的升压PFC变换器控制
Pub Date : 2019-10-01 DOI: 10.1109/ICCKE48569.2019.8964893
Mohammad Ali Labbaf Khaniki, Amir Hossein Asnavandi, M. Manthouri
One of the most important types of DC-DC converters is Boost converters. They increase the voltage level, stabilizing and reducing the voltage ripples at output. The nature of this system is nonlinear and uncertainty is unavoidable in modeling it. This study presented a fractional order fuzzy PI (FOFPI) controller to control the system. The Imperialist Competitive Algorithm (ICA) Optimization is used to optimize the parameters of proposed controllers. The fractional order of integral is achieved by ICA. The results are compared with fuzzy PI (FPI) controller. They show the FOFPI has less fluctuations, overshoot and settling time compared to FPI. Additionally, the value of Power Factor Correction (PFC) is closer to one. In fact, FOFPI has more flexibility and good performance in dealing with uncertainty in comparison with FPI. The results reveal the performance of the proposed method against other methods.
Boost转换器是DC-DC转换器中最重要的一种。它们增加了电压水平,稳定并减少了输出端的电压波动。该系统具有非线性特性,建模时不可避免地存在不确定性。本文提出了一种分数阶模糊PI (FOFPI)控制器来控制系统。采用帝国竞争算法(ICA)优化方法对所提出的控制器参数进行优化。分数阶积分由ICA实现。结果与模糊PI (FPI)控制器进行了比较。他们表明,与FPI相比,FOFPI具有更少的波动,超调和稳定时间。此外,功率因数校正(PFC)的值更接近于1。事实上,与FPI相比,FOFPI在处理不确定性方面具有更大的灵活性和更好的性能。实验结果表明,该方法与其他方法相比具有良好的性能。
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引用次数: 6
Persian Sentiment Lexicon Expansion Using Unsupervised Learning Methods 使用无监督学习方法扩展波斯语情感词典
Pub Date : 2019-10-01 DOI: 10.1109/ICCKE48569.2019.8964692
Reza Akhoundzade, Kourosh Hashemi Devin
Sentiment analysis, is a subfield of natural language processing that aims at opinion mining to analyze thoughts, orientation and, evaluation of users within some texts. The solution to this problem includes two main steps: extracting aspects and determining users’ positive or negative sentiments with respect to the aspects. Two main challenges of sentiment analysis in the Persian language are lack of comprehensive tagged data sets and use of colloquial language in texts. In this paper we propose, a system to specify and extract sentiment words using unsupervised methods in the Persian language that also support colloquial words. Additionally, we also proposed and implemented a state-of-art technique to expand Persian sentiment lexicon. Our proposed method utilized neural network (Word2Vec model) with the help of rule-based methods. F1 measure for sentiment words extraction in our proposed method is 0.58.
情感分析是自然语言处理的一个子领域,其目的是通过观点挖掘来分析某些文本中用户的思想、取向和评价。这个问题的解决方案包括两个主要步骤:提取方面和确定用户对这些方面的积极或消极情绪。波斯语情感分析的两个主要挑战是缺乏全面的标记数据集和在文本中使用口语。在本文中,我们提出了一个使用无监督方法在波斯语中指定和提取情感词的系统,该系统也支持口语词。此外,我们还提出并实现了一种最先进的波斯语情感词典扩展技术。我们提出的方法利用神经网络(Word2Vec模型)和基于规则的方法。在我们提出的方法中,情感词提取的F1度量为0.58。
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引用次数: 7
An Eligibility Traces based Cooperative and Integrated Control Strategy for Traffic Flow Control in Freeways 基于资格轨迹的高速公路交通流控制协同集成控制策略
Pub Date : 2019-10-01 DOI: 10.1109/ICCKE48569.2019.8965184
Seyed Soroosh Tabadkani Aval, Negar Shojaee Ghandeshtani, Parisa Akbari, N. Eghbal, Amin Noori
Traffic congestion and gridlocks are considered as main problems of designing an urban motorway network. For this purpose, traffic flow control strategies are presented through recent decades to address this problem. In this paper, an Eligibility Traces based Reinforcement Learning (ETRL) traffic flow control strategy was proposed. This strategy is based on cooperative and integrated control of Ramp Metering (RM) and Variable Speed Limits (VSL). To test the proposed method, first the traffic macroscopic model was calibrated via Genetic Algorithm (GA) optimization to simulate traffic behavior and further, the traffic control strategy is applied to M62 highway stretch in England which is one of the smartest highways, and the results are presented.
交通拥堵和交通阻塞是城市高速公路网设计的主要问题。为此,近几十年来提出了交通流量控制策略来解决这一问题。提出了一种基于合格跟踪的强化学习(ETRL)交通流控制策略。该策略基于匝道测速(RM)和变速限制(VSL)的协同集成控制。为了验证该方法,首先通过遗传算法优化对交通宏观模型进行标定,模拟交通行为,并将该交通控制策略应用于英国M62高速公路路段,该路段是英国最智能的高速公路之一,并给出了结果。
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引用次数: 1
FTHR: Fault Tolerant Hypercube-based Routing for NoCs FTHR: noc基于超立方体的容错路由
Pub Date : 2019-10-01 DOI: 10.1109/ICCKE48569.2019.8965117
R. Kourdy, Amir Rajabzadeh
Network-on-chips are a novel communications infrastructure for decoupling the communication elements from processing cores, with the goal of eliminating the challenges of many cores systems. One of the most important NoCs challenges is fault tolerance. This article tries to resolve the challenge into separate ways i.e., topology and routing. The proposed topology is called fault tolerant Hypercube-base NoC (HNoC) and the proposed routing algorithm is called Fault Tolerant Hypercube-based Routing (FTHR). The FTHR was simulated in a HNoC topology in NS-2 standard simulator. The FTHR was evaluated using 3D to 10D NoCs with 8 to 2014 cores in normal and faulty conditions. The results of the experiments show that the HNoC packet loss by FTHR routing varies between 75.0% and 98.16% depending on the different NoC dimensions. This high degree of fault tolerance is because of router degree and the diversity of paths in HNoC and also applied innovations in the FTHR routing. The results also show that the FTHR routing has reasonable outcome and is capable of tolerance about 100% of router and link faults in permanent and transient timing.
片上网络是一种新的通信基础设施,用于将通信元素与处理核心分离,其目标是消除多核心系统的挑战。noc最重要的挑战之一是容错性。本文试图以不同的方式解决这一挑战,即拓扑和路由。提出的拓扑结构被称为基于HNoC (fault tolerance Hypercube-based NoC),提出的路由算法被称为基于FTHR (fault tolerance Hypercube-based routing)。在NS-2标准模拟器中,采用HNoC拓扑对FTHR进行了仿真。在正常和故障情况下,使用3D至10D noc, 8至2014芯,评估FTHR。实验结果表明,根据不同的NoC尺寸,FTHR路由的HNoC丢包率在75.0% ~ 98.16%之间。这种高容错程度是由于HNoC中的路由器程度和路径的多样性,以及在FTHR路由中的应用创新。结果表明,FTHR路由结果合理,能够容忍100%的路由器和链路故障。
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引用次数: 0
Eliminating the Repetitive Motions as a Preprocessing step for Fast Human Action Retrieval 消除重复动作作为快速人体动作检索的预处理步骤
Pub Date : 2019-10-01 DOI: 10.1109/ICCKE48569.2019.8965087
Mohsen Ramezani, F. Yaghmaee
Today, video searching methods dropped behind the growth of using capturing devices. Action retrieval is a new research field which seeks to use the captured human action for searching the videos. As most human actions consist of similar motions which are repeated over time, we seek to propose a method for eliminating the repetitive motions before retrieving the videos. This method, as a preprocessing step, can decrease the volume of the retrieval computations for each video. Here, a function is used to calculate a value per each pixel as its movement energy. Then, CWT (Continuous Wavelet Transform) is used for mapping the response function of the points into the frequency space to find similar motion patterns more easier. The DTW (Dynamic Time Wrapping) is then applied on the new space to find similar frequency patterns (episodes) over time. Finally, one of the similar episodes, i.e. some sequential frames, remains for the retrieval computations and others are eliminated. The proposed method is evaluated on KTH, UCFYT, and HMDB datasets and results indicate the proper performance of the proposed method. Eliminating the repetitive motions results into significant reduction in retrieval computations and time.
如今,视频搜索方法落后于使用捕捉设备的增长。动作检索是一个新的研究领域,旨在利用捕捉到的人类动作来搜索视频。由于大多数人类行为由相似的动作组成,这些动作随着时间的推移而重复,我们试图提出一种在检索视频之前消除重复动作的方法。该方法作为预处理步骤,可以减少每个视频的检索计算量。这里,使用一个函数来计算每个像素的移动能量值。然后,使用连续小波变换(CWT)将点的响应函数映射到频率空间中,更容易找到相似的运动模式。然后将DTW(动态时间包裹)应用于新空间,以找到随时间变化的相似频率模式(剧集)。最后,其中一个相似的情节,即一些连续帧,保留用于检索计算,而其他的被消除。在KTH、UCFYT和HMDB数据集上对该方法进行了评估,结果表明该方法具有良好的性能。消除重复运动可以显著减少检索计算和时间。
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引用次数: 0
[Copyright notice] (版权)
Pub Date : 2019-10-01 DOI: 10.1109/iccke48569.2019.8964673
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引用次数: 0
期刊
2019 9th International Conference on Computer and Knowledge Engineering (ICCKE)
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