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Are web users really Markovian?

Flavio Chierichetti, Ravi Kumar, Prabhakar Raghavan, Tamas Sarlos
2012 Proceedings of the 21st international conference on World Wide Web - WWW '12  
Our main result invokes statistical order estimation tests for Markov chains to establish that Web users are not, in fact, Markovian.  ...  User modeling on the Web has rested on the fundamental assumption of Markovian behavior -a user's next action depends only on her current state, and not the history leading up to the current state.  ...  INTRODUCTION The Markovian model for Web user behavior posits that when a user is browsing a Web page P , the next page she visits depends only on P and not on how the user arrived at P .  ... 
doi:10.1145/2187836.2187919 dblp:conf/www/ChierichettiKRS12 fatcat:7u7bhgkv6jatffiaivy45qlnei

A Markovian Approach for Web User Profiling and Clustering [chapter]

Younes Hafri, Chabane Djeraba, Peter Stanchev, Bruno Bachimont
2003 Lecture Notes in Computer Science  
The objective of this paper is to propose an approach that extracts automatically web user profiling based on user navigation paths.  ...  Web user profiling consists of the best representative behaviors, represented by Markov models (MM).  ...  In the data collections, we have a relation table with 200 attributes, and few of them are really useful to achieve our objective.  ... 
doi:10.1007/3-540-36175-8_19 fatcat:ldr26agg5rhlvoqrfginxus4iy

Scheduling of users with markovian time-varying transmission rates

Fabio Cecchi, Peter Jacko
2013 Performance Evaluation Review  
show that threshold policies (of giving higher priority to users with higher transmission rate) are not necessarily optimal.  ...  We assume that this phenomenon follows a Markovian law and most of the discussion is dedicated to the case of three quality conditions of each user, for which we characterize an optimal index policy and  ...  It is really interesting to observe the way in which the different policies treat the two classes.  ... 
doi:10.1145/2494232.2465550 fatcat:3arkymg35jcjpnqqx4jutdwewy

Scheduling of users with markovian time-varying transmission rates

Fabio Cecchi, Peter Jacko
2013 Proceedings of the ACM SIGMETRICS/international conference on Measurement and modeling of computer systems - SIGMETRICS '13  
show that threshold policies (of giving higher priority to users with higher transmission rate) are not necessarily optimal.  ...  We assume that this phenomenon follows a Markovian law and most of the discussion is dedicated to the case of three quality conditions of each user, for which we characterize an optimal index policy and  ...  It is really interesting to observe the way in which the different policies treat the two classes.  ... 
doi:10.1145/2465529.2465550 dblp:conf/sigmetrics/CecchiJ13 fatcat:mioz6aauavh7vadifm6ywhhfby

Nearly-optimal scheduling of users with Markovian time-varying transmission rates

Fabio Cecchi, Peter Jacko
2016 Performance evaluation (Print)  
We first focus on three-state channels and show that threshold policies (of giving higher priority to users with higher transmission rate) are not necessarily optimal.  ...  We consider Markovian channel dynamics, relaxing the common but unrealistic assumption of i.i.d. channels.  ...  A class of users could, for instance, identify users located at the same physical properties (e.g. distance, obstacles), requesting to download the same type of file (e.g., video, mp3, web page, etc.),  ... 
doi:10.1016/j.peva.2016.02.002 fatcat:ua6edhzlurfilj7fra5mepbi34

Decision-Theoretic Planning with non-Markovian Rewards

S. Thiebaux, C. Gretton, J. Slaney, D. Price, F. Kabanza
2006 The Journal of Artificial Intelligence Research  
In decision-theoretic planning, where many desirable behaviours are more naturally expressed as properties of execution sequences rather than as properties of states, NMRDPs form a more natural model than  ...  the commonly adopted fully Markovian decision process (MDP) model.  ...  Given a description of the actions in a domain, nmrdpp lets the user play with and compare various encoding styles for non-Markovian rewards and search control knowledge, various translations of the resulting  ... 
doi:10.1613/jair.1676 fatcat:zf7e3w3yirhytcfwrx2hjvtdfe

Using Markov Models to Define Proactive Action Plans for Users at Multi-viewpoint Websites [chapter]

Ernestina Menasalvas, Socorro Millán, P. Gonzalez
2004 Lecture Notes in Computer Science  
The difficulty is even greater when dealing with web users and when decisions have to be taken on-line and salesmen are not involved.  ...  Research is partially supported by Universidad Politécnica de Madrid (project Web-RT) and MCYT under project DAWIS  ...  Acknowledgments The research has been partially supported by Universidad Politécnica de Madrid under Project WEB-RT Doctorado con Cali.  ... 
doi:10.1007/978-3-540-25929-9_95 fatcat:wwroeywsbnggdcmc6fkzykpsde

Markovian codon models of evolution for phylogeny inference

Marcelo Serrano Zanetti
2013
Deepest gratitude are also due to Prof.  ...  Acknowledgement Acknowledgments The authors are grateful to Ste ´phane Guindon for support with PhyML code and Ziheng Yang, Olivier Gascuel, and Gaston Gonnet for discussions on code optimization strategies  ...  Chapter 5 Are Codon Models Really Better? Testing a model with data which was generated by the same model is a useful approach to check the consistency of the model assumptions.  ... 
doi:10.3929/ethz-a-009772928 fatcat:l6omajccwfaxnpull3i6ekxfpm

A Web User Profiling Approach [chapter]

Younes Hafri, Chabane Djeraba, Peter Stanchev, Bruno Bachimont
2003 Lecture Notes in Computer Science  
This paper proposes characteristics of an idealized algorithm that would allow an automatic extraction of web user profil based on user navigation paths.  ...  We describe a simple predictive approach with these characteristics and show its predictive accuracy on a large dataset from KDD-Cup web logs (a commercial web site), while using fewer computational and  ...  In the data collections, we have a relation table with 200 attributes, and few of them are really useful to achieve our objective.  ... 
doi:10.1007/3-540-36901-5_24 fatcat:yvsrwqnc4faijegoyl4znru37i

Applying machine learning techniques to improve user acceptance on ubiquitous environement [article]

Djallel Bouneffouf
2013 arXiv   pre-print
The adaptation procedures associate actions to perceived situations of the user. Associations are based on feedback given by the user as a reaction to the behavior of the system.  ...  system and the user.  ...  A × S → [0, 1] is the stochastic Markovian transition function.  ... 
arXiv:1301.4351v1 fatcat:5cjbyjrknva6dnhnq2rslbue3u

Found in Translation [chapter]

Marco Turchi, Ilias Flaounas, Omar Ali, Tijl De Bie, Tristan Snowsill, Nello Cristianini
2009 Lecture Notes in Computer Science  
We present a complete working system that gathers multilingual news items from the Web, translates them into English, categorises them by topic and geographic location and presents them to the final user  ...  The integration of Support Vector Machines, Statistical Machine Translation, Web Technologies and Computer Graphics delivers a complete system where modern Statistical Machine Learning is used at multiple  ...  We are grateful to Simon Price and IRLT for their contribution to the web interface. This work is supported by the EU projects SMART and PASCAL2. Flaounas is supported by the A. S.  ... 
doi:10.1007/978-3-642-04174-7_55 fatcat:onoynbgvwbbkzbx2aajlig4rkq

On Scalable and Efficient Security Risk Modelling of Cloud Computing Infrastructure based on Markov processes

Dimitrios A. Karras, N. Bardis, J. Quartieri, C. Guarnaccia, N. Doukas
2017 ITM Web of Conferences  
While cloud computing infrastructures proliferates in nowadays computing and communications technology there are few reports investigating models for their security.  ...  In this paper, new efficient models are developed and evaluated for analyzing the security-related behavior of cloud computing architectures and networks comprising complex interconnected communication  ...  non-Markovian models.  ... 
doi:10.1051/itmconf/20170903006 fatcat:p6bzpzro4bcznbuijavwznbt6y

The GENIUS Grid Portal and robot certificates: a new tool for e-Science

Roberto Barbera, Giacinto Donvito, Alberto Falzone, Giuseppe La Rocca, Luciano Milanesi, Giorgio Maggi, Saverio Vicario
2009 BMC Bioinformatics  
They are extremely useful for instance to automate grid service monitoring, data processing production, distributed data collection systems.  ...  Methods: Robot certificates have recently been introduced to perform automated tasks on Grids on behalf of users.  ...  When the results about the computations are available, the user can retrieve them using a conventional web browser.  ... 
doi:10.1186/1471-2105-10-s6-s21 pmid:19534747 pmcid:PMC2697645 fatcat:pesm7pg5izgr5dyiq2finrta5u

Quantitative Analysis of Web Services Using SRMC [chapter]

Allan Clark, Stephen Gilmore, Mirco Tribastone
2009 Lecture Notes in Computer Science  
The methods are illustrated on a classical example of Web Service usage in a businessto-business scenario. Listing 1.5. SRMC model composition Client::Idle Service  ...  In this tutorial paper we present quantitative methods for analysing Web Services with the goal of understanding how they will perform under increased demand, or when asked to serve a larger pool of service  ...  The authors are supported by the EU FET-IST Global Computing 2 project SENSORIA ("Software Engineering for Service-Oriented Overlay Computers" (IST-3-016004-IP-09)).  ... 
doi:10.1007/978-3-642-01918-0_8 fatcat:5vwvmjnib5dx3fazxy7hemc5fy

Aggregated Quantified Response Time Matrix Formulation (ARMF) - A New Quality of Service Paradigm Technique

Balika J. Chelliah, K. Vivekanandan
2015 Journal of Software  
It provides the user-response matrix where every entry in the matrix depicts the QoS value of the service opted by the user.  ...  The goal of QoS is to select the appropriate web services for the customers achieve their goals.  ...  Constrained Web Services QoS values are given by the active users, while the comparative users become more vital when more QoS values are accessible for the active users.  ... 
doi:10.17706//jsw.10.9.1070-1078 fatcat:rt5ozlfvzfaypii7zpiqpgblse
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