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2017 International Conference on Network and Information Systems for Computers (ICNISC)最新文献

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Automatic In-Memory Fuzzing with the Assistance of Taint Flow Analysis 基于污点流分析的自动内存模糊测试
Gang Yang, Chao Feng, Xing Zhang, Chaojing Tang
In-memory fuzzing is a research hotspot in the field of vulnerability mining in recent years, due to the high efficiency and lightweight. However its incompleteness, poor robustness, and low automation, make in-memory fuzzing difficult to be applied in the actual vulnerability discovering. In this paper, we combine the taint analysis with in-memory fuzzing, to solve the above problems. And the experiments show that our method can improve the level of automation and robustness, reduce incompleteness effectively.
内存模糊以其高效、轻量级的特点成为近年来漏洞挖掘领域的研究热点。但是由于内存模糊的不完备性、鲁棒性差、自动化程度低,使得其难以应用于实际的漏洞发现中。在本文中,我们将污染分析与内存模糊相结合来解决上述问题。实验结果表明,该方法能有效地提高自动化程度和鲁棒性,减少不完备性。
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引用次数: 1
Research of a Data Flow Test Method for Attribute-Based Access Control Systems 基于属性的访问控制系统数据流测试方法研究
Yunpeng Zhang, Beibei Zhang, Zhiwen Wang
this paper proposes a data flow test model for attribute-based access control (ABAC) systems. First, the data flows of attribute values are described by formal forms and then the optimized histogram technique is used to analyze the range and the trend of the data flows. Then, an improved test coverage standard which is suitable for ABAC is used to analyze the error types and the causes of the test results. Finally, in order to verify the model's coverage rate and the effectiveness of generated test cases, the attribute mutation technique is used to compare the proposed method in this paper with related random algorithms and generation algorithms of simple test cases. The results of a large number of experiments show that the model is superior to the related random algorithms and simple test cases generation algorithms in terms of coverage rate and the effectiveness of test cases.
提出了一种基于属性访问控制(ABAC)系统的数据流测试模型。首先对属性值的数据流进行形式化描述,然后利用优化直方图技术分析数据流的范围和趋势。然后,采用一种改进的适用于ABAC的测试覆盖率标准,分析了测试结果的错误类型和产生原因。最后,为了验证模型的覆盖率和生成测试用例的有效性,利用属性突变技术将本文提出的方法与相关的随机算法和简单测试用例生成算法进行比较。大量实验结果表明,该模型在测试用例的覆盖率和有效性方面优于相关的随机算法和简单的测试用例生成算法。
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引用次数: 2
A Multi-Video Vehicle Tracking Method Based on Camshift with Color Interference 一种基于彩色干涉凸轮轴的多视频车辆跟踪方法
Lukai Xu, Xianqiao Chen
To avoid the situation that the Camshift algorithm which based on color characteristic will lose the target vehicle when other similar-color vehicles appear in the same video, we propose a method that can apply to multi-video tracking. Firstly, set Bhattacharyya distance at 0.8 as the standard of a successful tracking. Then in continuous frame image, use the Kalman filtering to estimate the next position of the target in order to narrow the tracking range and avoid losing target. In the case of discontinuous frame image, we suggest that use the color characteristic of the camshaft to track at first. If tracking fails due to color interference, then use the SIFT to track targets. Based on the above, we can achieve multi-video tracking. The experiment shows the method has the accuracy rate of 94.8% in continuous frame image and 91.4% in discontinuous frame image under a poor environment excluding a poor visibility.
为了避免基于颜色特征的Camshift算法在同一视频中出现其他相似颜色车辆时丢失目标车辆的情况,我们提出了一种适用于多视频跟踪的方法。首先,设置Bhattacharyya距离为0.8作为成功跟踪的标准。然后在连续帧图像中,利用卡尔曼滤波估计目标的下一个位置,以缩小跟踪范围,避免丢失目标。在不连续帧图像的情况下,我们建议首先利用凸轮轴的颜色特性进行跟踪。如果由于颜色干扰导致跟踪失败,则使用SIFT对目标进行跟踪。在此基础上,我们可以实现多视频跟踪。实验表明,该方法在排除能见度较差的恶劣环境下,对连续帧图像的识别准确率为94.8%,对不连续帧图像的识别准确率为91.4%。
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引用次数: 0
Community Detection and Location Recommendation Based on LBSN 基于LBSN的社区检测与位置推荐
Chang Su, Xiaotao Jia, Xianzhong Xie, Ning Li
Community detection is an effective tool for mining hidden information in social networks. Label propagation is a widely used and effective community detection algorithm. A lot of work has been done based on label propagation for standalone machine computing. While in location based social networks (LBSN), paralleled label propagation is needed to deal with large scale datasets. In this paper, we propose paralleled label propagation using MapReduce in Hadoop which improves the efficiency of community detection in the LBSN. We apply community detection to explore the friendship circles among the users and within each friendship circle recommend POI for each user. In the LBSN, we establish the user-location network and define the user-location score to calculate users' similarity. Comparing to direct recommendation, our method improves the accuracy of the recommendation and recall rate, the recommended effect has been improved.
社区检测是挖掘社交网络中隐藏信息的有效工具。标签传播是一种应用广泛且有效的社区检测算法。基于标签传播的单机计算已经做了大量的工作。而在基于位置的社交网络(LBSN)中,需要并行的标签传播来处理大规模数据集。在本文中,我们提出了在Hadoop中使用MapReduce并行标签传播,提高了LBSN中社区检测的效率。我们使用社区检测来探索用户之间的朋友圈,并在每个朋友圈内为每个用户推荐POI。在LBSN中,我们建立了用户位置网络,并定义了用户位置评分来计算用户的相似度。与直接推荐相比,我们的方法提高了推荐的正确率和召回率,提高了推荐效果。
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引用次数: 2
An Improved DV-Hop Localization Algorithm for Wireless Sensor Network Based on TDOA Quantization 基于TDOA量化的改进无线传感器网络DV-Hop定位算法
Q. Tang, Jian Wang
In this paper, we propose an improved method of DV-Hop localization algorithm in wireless sensor networks based on the time difference of arrival (TDOA) quantization assisted. The number of hops of the nodes in the DV-Hop localization algorithm is quantified by combining with the low error characteristic of TDOA when measuring close distance. And the average per hop distance of each anchor node is corrected by means of using the hop weighted and limiting the propagation of hops to make it more close to the true value. Through simulations, we compare the performance of improved algorithm with other localization schemes and show that improved algorithm has more efficient and stable performance.
本文提出了一种基于TDOA量化辅助的无线传感器网络中DV-Hop定位算法的改进方法。结合近距离测量时TDOA误差小的特点,对DV-Hop定位算法中节点的跳数进行量化。通过对各锚节点的跳加权和限制跳数的传播,修正各锚节点的平均每跳距离,使其更接近真实值。通过仿真,将改进算法与其他定位方案的性能进行了比较,结果表明改进算法具有更高的效率和稳定性。
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引用次数: 2
Compact Multi-Layered Wideband Bandpass Filter with Multiple Transmission Zeros 紧凑型多层宽带带通滤波器与多个传输零点
Decheng Gan, S. He, Zhijiang Dai, Tian Qi, Decheng Gan
A miniaturized multi-layered wideband bandpass filter (BPF) based on the low-temperature-cofired ceramic (LTCC) technology is proposed in this paper. The proposed filter consists of a T-shaped short stub and a pair parallel transmission lines. Owing to the multi-path effect, multiple transmission zeros can be realized near the passband for enhanced selectivity. A wide-band filter from 3.59 GHz to 8.21 GHz is designed, fabricated and measured. The measured results show that the center frequency is 6 GHz with a fractional bandwidth (FBW) of 74.8%. Three transmission zeros were introduced near the passband, located at 2.1 GHz with 36.25 dB rejection, 9.25 GHz with 27.02 dB rejection, 10.56 GHz with 28.58 dB rejection.
提出了一种基于低温共烧陶瓷(LTCC)技术的小型多层宽带带通滤波器(BPF)。该滤波器由一个t型短存根和一对平行传输线组成。由于多径效应,可以在通带附近实现多个传输零点,提高了选择性。设计、制作并测量了一个3.59 GHz ~ 8.21 GHz的宽带滤波器。测量结果表明,中心频率为6 GHz,分数带宽(FBW)为74.8%。在通频带附近引入三个传输零点,分别位于2.1 GHz、36.25 dB、9.25 GHz、27.02 dB和10.56 GHz、28.58 dB。
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引用次数: 0
Assessment Model of Command Information System Security Situation Based on Twin Support Vector Machines 基于双支持向量机的指挥信息系统安全态势评估模型
Liang-Liang Shi, Jian Chen
In order to solve the difficult issues in Command Information System security situation assessment such as having wide sources of training samples, the time and space complexity is high and the method solving the problems are strong subjective and so on, an approach based on twin support vector machines is proposed. Firstly, the main factors which affect the command information system security are analyzed. Then based on the twin support vector machines, the assessment model of command information system security situation is established. Based on this, the TWSVM is used for sample data learning and parameter estimation, then the global optimum solution is get. Simulation results show that compared with traditional assessment methods, the proposed method can improve the accuracy of the assessment system, reflect the security situation of the current system quickly and efficiently, and has strong robustness.
针对指挥信息系统安全态势评估中训练样本来源广、时间和空间复杂度高、求解方法主观性强等难题,提出了一种基于双支持向量机的方法。首先,分析了影响指挥信息系统安全的主要因素。然后基于双支持向量机,建立了指挥信息系统安全态势评估模型。在此基础上,利用TWSVM进行样本数据学习和参数估计,得到全局最优解。仿真结果表明,与传统的评估方法相比,所提出的方法能够提高评估系统的准确性,快速有效地反映当前系统的安全状况,具有较强的鲁棒性。
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引用次数: 4
A New Residual Energy Based Relay Selection in Two-Way Buffer-Aided Relay Networks 一种基于剩余能量的双向缓冲辅助中继网络中继选择方法
Hanwu Wang, Beibei Yang
In this paper, we consider a buffer-aided two-way relay networks with two end nodes and N relay nodes. With the objective of maximizing throughput and network life time, a new residual energy based relay selection and joint scheduling scheme is proposed. In the proposed scheme, we jointly consider the channel state information (CSI), buffering capacity and residual energy status of the relay nodes. The relay selection metric based on the CSI can guarantee to obtain better channel gain. And that considering both buffer occupancy information and residual energy of relay nodes can ensure the quality of the service (QoS) of transmission. Next we make a comparison with the existing scheduling schemes in two-way relay networks. And simulation results illustrate that the proposed scheme in this paper can achieve larger throughput gain than the existing scheduling schemes.
本文考虑一个具有2个端节点和N个中继节点的缓冲辅助双向中继网络。以最大吞吐量和网络寿命为目标,提出了一种基于剩余能量的中继选择和联合调度方案。在该方案中,我们综合考虑了中继节点的信道状态信息(CSI)、缓冲容量和剩余能量状态。基于CSI的中继选择度量可以保证获得较好的信道增益。同时考虑缓冲区占用信息和中继节点的剩余能量,可以保证传输的服务质量(QoS)。其次,对现有的双向中继网络调度方案进行了比较。仿真结果表明,与现有的调度方案相比,本文提出的方案可以获得更大的吞吐量增益。
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引用次数: 2
Research on Fast Networking Technologies Based on Hybrid OFDM Modulation for Cognitive Radio Networks 基于混合OFDM调制的认知无线网络快速组网技术研究
Zhi-hui Ye, Ziwei Zhang
Hybrid OFDM modulation signals are analysis for spectrum correlation in this paper, and are apply to cognitive cooperative networks. Four kinds of channel states of spectrum idle, master signals transmitting, secondary signals transmitting, and hybrid signals transmitting can be distinguished agilely, by using distinct cyclic spectrum features, and embedding exclusive cyclostationary identification artificially, which help to strengthen spectrum characteristic of signal, so as to access and withdraw fast and reliable. Further, by signing different cognitive networks with the locations of hybrid modulation signals, cognitive nodes can identification signals from different networks. Cyclostationary identification and hybrid modulation location are combined to endow the signal the capability of agilely networking. Simulations show that, the proposed model can achieve agilely network building with the improving spectrum efficiency.
本文对混合OFDM调制信号进行了频谱相关性分析,并将其应用于认知协同网络。利用明显的循环频谱特征,人工嵌入独有的周期平稳识别,可灵活区分频谱空闲、主信号发射、副信号发射和混合信号发射四种信道状态,增强信号的频谱特性,实现快速可靠的存取。进一步,通过用混合调制信号的位置在不同的认知网络上签名,认知节点可以识别来自不同网络的信号。将周期平稳辨识与混合调制定位相结合,使信号具有灵活组网的能力。仿真结果表明,该模型可以在提高频谱效率的同时实现灵活的网络构建。
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引用次数: 0
An Evacuation Model Based on the Improved Particle Swarm Optimization 基于改进粒子群优化的疏散模型
Jing-long Yang, Dongliang He
In recent years, the unexpected factors leading to frequent accidents which causing heavy casualties and economic losses. Therefore, how to make use of computer technology to simulate the evacuation process has an important practical significance. In this paper, we propose a new model for evacuation. Based on the traditional particle swarm algorithm, we revise the inertia weight of the algorithm to balance the global and local search ability according to the aggregation degree of the population. Taking the interaction between individual and others, individual and obstacles or wall into account, we introduce the social force model to simulate this phenomenon and use it as a collision resolution strategy. Then, we combine the improved PSO-based model with modified Social Force Model to form the velocity updating rule. In the end, through simulation and analyzation, we testify the modified model is very effective.
近年来,意外因素导致交通事故频发,造成重大人员伤亡和经济损失。因此,如何利用计算机技术模拟疏散过程具有重要的现实意义。在本文中,我们提出了一个新的疏散模型。在传统粒子群算法的基础上,根据粒子群的聚集程度,修正算法的惯性权值,平衡全局和局部搜索能力。考虑到个体与他人、个体与障碍物或墙壁之间的相互作用,我们引入社会力模型来模拟这一现象,并将其用作冲突解决策略。然后,将改进的pso模型与改进的社会力模型相结合,形成速度更新规则。最后,通过仿真和分析,验证了修正模型的有效性。
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引用次数: 0
期刊
2017 International Conference on Network and Information Systems for Computers (ICNISC)
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