2016 8th International Conference on Communication Systems and Networks (COMSNETS)最新文献_第9页

Social interaction in the Flickr social network Flickr社交网络中的社交互动

2016 8th International Conference on Communication Systems and Networks (COMSNETS) Pub Date : 2015-08-30 DOI: 10.1109/COMSNETS.2016.7439975

Karthik Gopalakrishnan, Arun Pandey, Joydeep Chandra

{"title":"Social interaction in the Flickr social network","authors":"Karthik Gopalakrishnan, Arun Pandey, Joydeep Chandra","doi":"10.1109/COMSNETS.2016.7439975","DOIUrl":"https://doi.org/10.1109/COMSNETS.2016.7439975","url":null,"abstract":"Online social networking sites such as Facebook, Twitter and Flickr are among the most popular sites on the Web, providing platforms for sharing information and interacting with a large number of people. The different ways for users to interact, such as liking, retweeting and favoriting user-generated content, are among the defining and extremely popular features of these sites. While empirical studies have been done to learn about the network growth processes in these sites, few studies have focused on social interaction behaviour and the effect of social interaction on network growth. In this paper, we analyze large-scale data collected from the Flickr social network to learn about individual favoriting behaviour and examine the occurrence of link formation after a favorite is created. We do this using a systematic formulation of Flickr as a two-layer temporal multiplex network: the first layer describes the follow relationship between users and the second layer describes the social interaction between users in the form of favorite markings to photos uploaded by them. Our investigation reveals that (a) favoriting is well-described by preferential attachment, (b) over 50% of favorites are reciprocated within 10 days if at all they are reciprocated, (c) different kinds of favorites differ in how fast they are reciprocated, and (d) after a favorite is created, multiplex triangles are closed by the creation of follow links by the favoriter's followers to the favorite receiver.","PeriodicalId":185861,"journal":{"name":"2016 8th International Conference on Communication Systems and Networks (COMSNETS)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132838014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Shifting behaviour of users: Towards understanding the fundamental law of Social Networks 用户行为的转变:理解社交网络的基本法则

2016 8th International Conference on Communication Systems and Networks (COMSNETS) Pub Date : 2015-07-28 DOI: 10.1109/COMSNETS.2016.7439982

Y. Gupta, J. Saini, Nidhi Sridhar, S. Iyengar

引用次数: 0

Understanding data traffic behaviour for smartphone video and audio apps 了解智能手机视频和音频应用程序的数据流量行为

2016 8th International Conference on Communication Systems and Networks (COMSNETS) Pub Date : 1900-01-01 DOI: 10.1109/COMSNETS.2016.7439999

Satadal Sengupta, Harshit Gupta, Pradipta De, Bivas Mitra, Sandip Chakraborty, Niloy Ganguly

引用次数: 4

Prediction of quality degradation for mobile video streaming apps: A case study using YouTube 移动视频流应用质量下降预测:以YouTube为例

2016 8th International Conference on Communication Systems and Networks (COMSNETS) Pub Date : 1900-01-01 DOI: 10.1109/COMSNETS.2016.7440005

D. Jain, Swapnil Agrawal, Satadal Sengupta, Pradipta De, Bivas Mitra, Sandip Chakraborty

引用次数: 7

k-channel connected topology control algorithm for cognitive radio networks 认知无线网络的k通道连接拓扑控制算法

2016 8th International Conference on Communication Systems and Networks (COMSNETS) Pub Date : 1900-01-01 DOI: 10.1109/COMSNETS.2016.7440019

R. Yadav, R. Misra

{"title":"k-channel connected topology control algorithm for cognitive radio networks","authors":"R. Yadav, R. Misra","doi":"10.1109/COMSNETS.2016.7440019","DOIUrl":"https://doi.org/10.1109/COMSNETS.2016.7440019","url":null,"abstract":"Cognitive radio networks (CRNs) enable secondary users (SUs) to access the underutilized spectrum licensed to primary users (PUs) without causing unacceptable interference to the PUs' activities. On appearance of PUs, the available channel of SUs change dynamically over time. A pair of communicating SUs must vacate the channel and has to switch to other available channel, when a PU reclaims the channel in use with SUs. This can sometimes lead to partition of CRNs if there is no alternative channel. Due to temporal variations of channel availability among SUs possess research challenge for ensuring connectivity of CRNs. In CRN, it is crucial to minimize power consumption while maintaining k-channel connectivity. We require topology generated by power setting must be at least k-vertex connected subgraph of the network graph and remains connected when any of (k - 1) channels reclaimed by PUs. This problem is known to be NP-hard. In this paper, we consider k-channel connectivity of a CRN. We combine topology control and channel assignment to achieve conflict free k-channel connected topology in CRN. We present a centralized algorithm, Centralized k-channel Connected Spanning Subgraph (CCSSk), which preserves k-channel connectivity and ensures conflict free channel assignment in CRN. CCSSk preserves minimum energy path between any pair of nodes. Simulation results show that the constructed topology has a small average transmission range and a small average degree than other existing topology control algorithms. Proposed algorithm construct topology which is power-efficient i.e. constant power stretch factor. The simulation results demonstrate that the proposed algorithm can reduce the number of required channels efficiently to achieve k-channel connected topology while preserving conflict free property.","PeriodicalId":185861,"journal":{"name":"2016 8th International Conference on Communication Systems and Networks (COMSNETS)","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134603854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Leveraging the trade-off between spatial reuse and channel contention in wireless mesh networks 利用无线网状网络中空间重用和信道争用之间的权衡

2016 8th International Conference on Communication Systems and Networks (COMSNETS) Pub Date : 1900-01-01 DOI: 10.1109/COMSNETS.2016.7439963

Subhrendu Chattopadhyay, Sandip Chakraborty, Sukumar Nandi

{"title":"Leveraging the trade-off between spatial reuse and channel contention in wireless mesh networks","authors":"Subhrendu Chattopadhyay, Sandip Chakraborty, Sukumar Nandi","doi":"10.1109/COMSNETS.2016.7439963","DOIUrl":"https://doi.org/10.1109/COMSNETS.2016.7439963","url":null,"abstract":"Performance optimization strategies in wireless mesh networks have witnessed many diverged directions, out of which the recent studies have explored the use of spatial multiplexing through data rate and transmit power adaptation to increase spatial re-usability while minimizing network interference. However, joint data rate and transmit power adaptation shows a clear trade-off, where higher transmit power helps in sustaining high achievable data rates with the cost of increased interference to the neighboring receiver nodes. Such a tradeoff results in channel access unfairness among contending flows, where a node with high transmit power gains more performance benefit compared to its neighbors. Unfairness among nodes in a mesh network results in performance drops for the end-to-end flows. In this paper, we formulate a multivariate optimization problem to maximize network utilization and fairness, while minimizing average transmit power for all transmitter nodes. The Pareto optimality nature of the vector optimization has been explored to design a distributed localized heuristic where every node individually decides their scheduling slots and transmit power while keeping fairness as a constraint. The performance of the proposed scheme has been evaluated through simulation, and the comparisons with recent studies reveal that it improves fairness that results approximately 10% - 40% improvement in end-to-end throughput for different network and traffic scenarios.","PeriodicalId":185861,"journal":{"name":"2016 8th International Conference on Communication Systems and Networks (COMSNETS)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117269123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Mobility vector based neighbour selection in mobile WSN with multichannel MAC 基于移动度向量的多通道MAC移动WSN邻居选择

2016 8th International Conference on Communication Systems and Networks (COMSNETS) Pub Date : 1900-01-01 DOI: 10.1109/COMSNETS.2016.7439987

V. Sreejith, Prateek Khandelwal, K. Anupama, L. Gudino

引用次数: 0

DriverTalk: Enabling targeted communication between drivers DriverTalk:实现司机之间的定向通信

2016 8th International Conference on Communication Systems and Networks (COMSNETS) Pub Date : 1900-01-01 DOI: 10.1109/COMSNETS.2016.7440002

R. Meng, Romit Roy Choudhury, Song Wang, Srihari Nelakuditi

{"title":"DriverTalk: Enabling targeted communication between drivers","authors":"R. Meng, Romit Roy Choudhury, Song Wang, Srihari Nelakuditi","doi":"10.1109/COMSNETS.2016.7440002","DOIUrl":"https://doi.org/10.1109/COMSNETS.2016.7440002","url":null,"abstract":"Communication between neighboring drivers on the road is critical for safe and smooth driving. Drivers currently communicate by sounding horn or blinking lights, which sometimes is too coarse-grain to precisely convey the message, i.e., it is not apparent who the target and what the intent of the message is. Towards a better alternative, we explore the possibility of utilizing the smartphones of drivers to enable targeted communication between them. We propose a system, called DriverTalk, with which a driver can directly talk to convey messages such as you-are-blocking-traffic to the driver of the vehicle in front and do-not-tailgate-me to the driver behind. Furthermore, DriverTalk gives drivers the opportunity to seek and provide information as and when necessary during their driving. To identify the senders and receivers while exchanging messages, without an a priori knowledge about the drivers and their smartphones/vehicles, DriverTalk utilizes Visual IDs, i.e., the appearance images, of vehicles. Our evaluation shows that DriverTalk could deliver what a driver says to the target driver in about 1 second and with more than 95% success rate under various traffic conditions.","PeriodicalId":185861,"journal":{"name":"2016 8th International Conference on Communication Systems and Networks (COMSNETS)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121759383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Improving the reliability of receivers for 5G networks 提高5G网络接收机的可靠性

2016 8th International Conference on Communication Systems and Networks (COMSNETS) Pub Date : 1900-01-01 DOI: 10.1109/COMSNETS.2016.7439993

A. Sah, A. Chaturvedi

引用次数: 1

ES2: Managing link level parameters for elevating data rate and stability in High Throughput WLAN ES2:管理链路级参数，提高高吞吐量WLAN的数据速率和稳定性

2016 8th International Conference on Communication Systems and Networks (COMSNETS) Pub Date : 1900-01-01 DOI: 10.1109/COMSNETS.2016.7439977

Sandip Chakraborty, Subhrendu Chattopadhyay

{"title":"ES2: Managing link level parameters for elevating data rate and stability in High Throughput WLAN","authors":"Sandip Chakraborty, Subhrendu Chattopadhyay","doi":"10.1109/COMSNETS.2016.7439977","DOIUrl":"https://doi.org/10.1109/COMSNETS.2016.7439977","url":null,"abstract":"High Throughput (HT) IEEE 802.11n/ac wireless networks support a large set of configuration parameters, like Multiple Input Multiple Output (MIMO) streaming, modulation and coding scheme, channel bonding, short guard interval, frame aggregation levels etc., that determine its physical data rate. However, all these parameters have an optimal performance region based on the link quality and external interference. Therefore, dynamically tuning the link parameters based on channel condition can significantly boost up the network performance. The major challenge in adapting all these parameters dynamically is that a large feature set need to be enumerated during run-time to find out the optimal configuration, which is a not feasible in real time. Therefore in this paper, we propose an estimation and sampling mechanism to filter out the non-preferable features on the fly, and then apply a learning mechanism to find out the best features dynamically. We apply a Kalman filtering mechanism to figure out the preferable feature sets from all possible feature combinations. A novel metric has been defined, called the diffESNR, which is used to select the best features from the sampled feature sets. The proposed scheme, Estimate-Sample-Select (ES2) is implemented and tested over a mixed wireless testbed using IEEE 802.11n and IEEE 802.11ac HT wireless routers, and the performance is analyzed and compared with other related mechanisms proposed in the literature. The analysis from the testbed shows that ES2 results in approx 60% performance improvement compared to the standard and other related mechanisms.","PeriodicalId":185861,"journal":{"name":"2016 8th International Conference on Communication Systems and Networks (COMSNETS)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128654902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6