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6th Annual International Conference on Combinatorial Optimization and Applications, COCOA 2012

作者： Ni, Guanqun Xu, Yinfeng School of Management Xi'an Jiaotong University Xi'an 710049 China State Key Lab. for Manufacturing Systems Engineering Xi'an 710049 China Ministry of Education Key Lab. for Process Control and Efficiency Engineering Xi'an 710049 China

ISBN: (纸本)9783642317699

We introduce a model considering the single-leg revenue management problem from the perspective of online algorithms and competitive analysis. In this model, the price and limitation of bookings are both decision variables. Assuming the process of the customers meets the low-before-high manner and the expected value of customer falls in a closed interval, we analyze the upper bound for deterministic online joint pricing and booking policy and propose one optimal policy for each case. © 2012 Springer-Verlag.

关键词： Economics

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Budget planning for coupled campaigns in search auctions

Budget planning for coupled campaigns in search auctions

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22nd Workshop on Information Technologies and systems, WITS 2012

作者： Yang, Yanwu Qin, Rui Zhang, Jie Li, Xin Zeng, Daniel State Key Lab of Intelligent Control and Management of Complex Systems Inst. of Automation CAS Beijing China Department of Information Systems City University of Hong Kong Kowloon Tong Hong Kong Department of Management Information Systems University of Arizona United States

Budget-related decisions in search auctions are recognized as a structured decision problem, rather than a simple constraint. Budget planning over several coupled campaigns remains a challenging but utterly important task in search advertisements. In this paper, we propose a multi-campaign budget plan- ning approach using optimal control techniques, with consideration of the substitute relationship between advertising campaigns. A measure of coupled relationships between campaigns is presented, e.g., the over- lapping degree (O) in terms of campaign contents, promotional periods and target regions. We also discuss some desirable properties of our model and possible solutions. Furthermore, computational experiments are conducted to evaluate our model and identified properties, with real-world data collected from logs and reports of practical campaigns. Experimental results show that, (a) coupled campaigns with higher over- lapping degrees can reduce the optimal budget level and the optimal revenue, and also arrive the budgeting cap earlier;(b) The advertising effort could be seriously weakened when ignoring the overlapping degree between campaigns.

关键词： Budget control

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Color object tracking in five degrees of freedom stereo vision system

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content Technology and its Applications 2012年第20期6卷 43-52页

作者： Xin, Du Xiaoguang, Zhao Yu, Huang Jingjing, Ye School of Electrical Engineering Beijing Jiaotong University Beijing China State Key Lab. of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China

From the view of combination of stereo vision and robot control, an active stereo vision for object tracking and location system is built to work on flexible manufacturing system. A method based on local HSV image and shape of object to recognize object is used for robot tracking. After the color segment, use the knowledge of shape of objects to recognize objects. And a technique for camera calibration based on plane square is proposed. It only requires the camera to observe a square at two (or more) different unknown orientations. Use the result of object recognize and camera calibration the robot can position and track the object. At the last of the paper, the results of object tracking experiments prove that the method is correct.

关键词： Stereo vision

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Multiple models fusion for pattern classification on noise data

Multiple models fusion for pattern classification on noise d...

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2012 International Conference on System Science and Engineering, ICSSE 2012

作者： Fan, Bi Zhang, Geng Li, Han-Xiong Department of Systems Eng. and Eng. Management City University of Hong Kong Hong Kong Hong Kong School of Mechanical and Electrical Engineering Central South University Changsha China State Key Lab. of High Performance Complex Manufacturing Central South University China

ISBN: (纸本)9781467309455

An important characteristic of real-world learning process is that the data frequently contains uncertainties. The uncertainties in the datasets deteriorate the learning process. Hence, to properly represent and handle the uncertainty problem is one of the key issues in the decision learning system. This paper offers a multiple models fusion method to address the uncertainty problem, by conducting the fusion of two models, Bayesian classifier and Probabilistic based Noise Aware Support Vector Machine. Specifically, we take the advantage of noise-insensitive characteristic of the Naïve Bayesian classifier, to enhance the noise-tolerant ability of probabilistic information based Support Vector Machine. The method fuses the probabilistic decision information obtained from the two classifiers in a flexible way to give the final decision. Furthermore, the multiple models fusion method is evaluated on an artificial dataset for a classification task. The experiment results show good performance when compared with using only one learning technique in the noise environment. © 2012 IEEE.

关键词： Support vector machines

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A NoSQL based cached storage solution of GIS Web service

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content Technology and its Applications 2012年第20期6卷 268-276页

作者： Liu, Jin Wu, Yangping Zhuo, Dan Hu, Qiping Wang, Yan Zhang, Wensheng State Key Lab of Software Engineering Computer School Wuhan University China International School of Software Wuhan University China State Key Lab of Management and Control for Complex Systems Institute of Automation Chinese Academy of Science China

One of challenges in GIS Web service is mass GIS data storage and processing. There are at least three obstacles that oppose dealing with this challenge: the mismatch between the frequent requirement of concurrent tasks for accessing data in GIS Web service and the poor performance of conventional storage mechanism such as relational databases;the insufficiency of relational databases to manage complex data types in GIS Web service;the horizontal scalab.lity of storage for non-stop GIS Web service evolution. This paper proposes a distributed cached storage solution, as the mixture of MongoDB storage and Memcached cache, for GIS Web service. Both techniques are closely related to NoSQL that is a class of database management system identified by its non-adherence to the widely used relational database management system (RDBMS) model. A concise case that facilitates a better understanding of this work indicates its feasibility.

关键词： Websites

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Identifying Important Users in Sina Microblog

Identifying Important Users in Sina Microblog

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International Conference on Multimedia Information Networking and Security (MINES)

作者： Jiaqi Liu Zhidong Cao Kainan Cui Feng Xie State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China Department of Automation Tsinghua University Tsinghua National Lab for Information Science and Technology Tsinghua University Beijing China

ISBN: (纸本)9781467330930

Important users are high-status vertices in social networks. They are everywhere in most fields of society and have big impact on those around them. Although a lot of effort has been made on identifying important users, the efficient methods still need to be developed, especially for the web users from Sina microblog, which is the most popular social networking sites in China and has unique characteristics. In this paper, a machine learning-based method which only uses several attributes on Naive Bayes Classifiers (NBC) and Back Propagation Neural Network (BPNN) was proposed to identify important users. Initial experiments indicate that our method is effective. The result of "high" category has more than 55% accuracy rate. We find the NBC can identify more important users while BPNN has higher accuracy rate. What's more, the numbers of follower and followings in Sina microblog is independent.

关键词： Social network services Training Neural networks Accuracy Security Learning systems Educational institutions

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A new search strategy of radio fingerprint matching method in wireless sensor network

A new search strategy of radio fingerprint matching method i...

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1st International Conference on Robot, Vision and Signal Processing, RVSP 2011

作者： Li, Hongchun Zhao, Xiaoguang Tan, Min Institute of Automation Chinese Academy of Sciences State Key Lab. of Intelligent Control and Management of Complex Systems Beijing China

ISBN: (纸本)9780769545813

Radio fingerprint matching localization method promises high localization accuracy but requires extensive infrastructural effort and search operations. This paper proposes a new search strategy for radio fingerprint matching method, which sharply reduces search operations and shows little effect on localization accuracy. Indoor experiment is conducted to evaluate our method. © 2011 IEEE.

关键词： Wireless sensor networks

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Budget-constrained bidding in the sponsored search

Budget-constrained bidding in the sponsored search

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21st Workshop on Information Technologies and systems, WITS 2011

作者： Li, Xiarong Zeng, Daniel Dajun Yang, Yanwu State Key Lab. of Intelligent Control and Management of Complex Systems Chinese Academy of Sciences China Management Information Systems Department University of Arizona United States

In this paper, we study the budget-constrained bidding problems in sponsored search. Our findings illustrate that, compared to budget-irrespective bidding, advertisers can obtain equal even better return-on-investment... 详细信息

关键词： Budget control

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Budget allocation in competitive search advertisements

Budget allocation in competitive search advertisements

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21st Workshop on Information Technologies and systems, WITS 2011

作者： Yang, Yanwu Li, Juanjuan Zhang, Jie Zeng, Daniel State Key Lab. of Intelligent Control and Management of Complex Systems Chinese Academy of Sciences Beijing 100190 China Department of Management Information Systems University of Arizona United States

This paper proposes a novel budget model based on differential game to deal with budget allocation in competitive search advertisements under a finite time horizon, with consideration of budget constraints. We extend the advertising response function with the dynamical advertising effort u and quality score q to fit search advertising scenarios. We also discuss Nash equilibriums of our model, and study some desirable properties of two kinds of equilibriums in the case with budget constraints: "budget-stable" open-loop Nash equilibrium (BS-OLNE) and "budget-unstable" open-loop Nash equilibrium (BUS-OLNE). We have evaluated our budget model and identified properties with computational experiments. Experimental results show that budget strategies with dynamical advertising elasticity are superior to those with fixed one and our findings on OLNEs are helpful for advertisers to make budget decisions.

关键词： Marketing

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Polarity shifting: Corpus construction and analysis

Polarity shifting: Corpus construction and analysis

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2011 International Conference on Asian Language Processing, IALP 2011

作者： Zhang, Xiaoqian Li, Shoushan Zhou, Guodong Zhao, Hongxia Natural Language Processing Lab. Soochow University Suzhou China State Key Laboratory of Intelligent Control and Management of Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9780769545547

Polarity shifting has been a challenge to automatic sentiment classification. In this paper, we create a corpus which consists of polarity-shifted sentences in various kinds of product reviews. In the corpus, both the sentimental words and shifting trigger words are annotated. Furthermore, we analyze all the polarity shifted sentences and categorize them into five categories: opinion-itself, holder, target, time and hypothesis. Experimental study shows the agreement of annotation and the distribution of the five categories of polarity shifting. © 2011 IEEE.

关键词： corpus annotation polarity shifting sentiment classification

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