Search Theory

Search Theory PDF Author: David V. Chudnovsky
Publisher: CRC Press
ISBN: 100094395X
Category : Mathematics
Languages : en
Pages : 176

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Book Description
On the solution of an optimal search problem with an exponential detection function. Covers one- and two-sided detection problems by furnishing continuous and discret time strategies; examines two-sided search strategies with solutions in hide and seek games in many discrete and continuous bounded

Search Theory

Search Theory PDF Author: Steve Alpern
Publisher: Springer Science & Business Media
ISBN: 1461468256
Category : Computers
Languages : en
Pages : 300

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Book Description
Search games and rendezvous problems have received growing attention in computer science within the past few years. Rendezvous problems emerge naturally, for instance, to optimize performance and convergence of mobile robots. This gives a new algorithmic point of view to the theory. Furthermore, modern topics such as the spreading of gossip or disease in social networks have lead to new challenging problems in search and rendezvous. Search Theory: A Game Theoretic Perspective introduces the first integrated approach to Search and Rendezvous from the perspectives of biologists, computer scientists and mathematicians. This contributed volume covers a wide range of topics including rendezvous problems and solutions, rendezvous on graphs, search games on biology, mobility in governed social networks, search and security, and more. Most chapters also include case studies or a survey, in addition to a chapter on the future direction of Search and Rendezvous research. This book targets researchers and practitioners working in computer science, mathematics and biology as a reference book. Advanced level students focused on these fields will also find this book valuable as a secondary text book or reference.

The Theory of Search Games and Rendezvous

The Theory of Search Games and Rendezvous PDF Author: Steve Alpern
Publisher: Springer Science & Business Media
ISBN: 0306482126
Category : Mathematics
Languages : en
Pages : 316

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Book Description
Search Theory is one of the original disciplines within the field of Operations Research. It deals with the problem faced by a Searcher who wishes to minimize the time required to find a hidden object, or “target. ” The Searcher chooses a path in the “search space” and finds the target when he is sufficiently close to it. Traditionally, the target is assumed to have no motives of its own regarding when it is found; it is simply stationary and hidden according to a known distribution (e. g. , oil), or its motion is determined stochastically by known rules (e. g. , a fox in a forest). The problems dealt with in this book assume, on the contrary, that the “target” is an independent player of equal status to the Searcher, who cares about when he is found. We consider two possible motives of the target, and divide the book accordingly. Book I considers the zero-sum game that results when the target (here called the Hider) does not want to be found. Such problems have been called Search Games (with the “ze- sum” qualifier understood). Book II considers the opposite motive of the target, namely, that he wants to be found. In this case the Searcher and the Hider can be thought of as a team of agents (simply called Player I and Player II) with identical aims, and the coordination problem they jointly face is called the Rendezvous Search Problem.

Allocation, Information and Markets

Allocation, Information and Markets PDF Author: John Eatwell
Publisher: Springer
ISBN: 1349202150
Category : Business & Economics
Languages : en
Pages : 321

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Book Description
This is an extract from the 4-volume dictionary of economics, a reference book which aims to define the subject of economics today. 1300 subject entries in the complete work cover the broad themes of economic theory. This volume concentrates on the topic of allocation information and markets.

The Economics of Search

The Economics of Search PDF Author: Brian McCall
Publisher: Routledge
ISBN: 1134422350
Category : Business & Economics
Languages : en
Pages : 574

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Book Description
The economics of search is a prominent component of economic theory, and it has a richness and elegance that underpins a host of practical applications. In this book Brian and John McCall present a comprehensive overview of the economic theory of search, from the classical model of job search formulated 40 years ago to the recent developments in equilibrium models of search. The book gives decision-theoretic foundations to seemingly slippery issues in labour market theory, estimation theory and economic dynamics in general, and surveys the entire field of the economics of search, including its history, theory, and econometric applications. Theoretical models of the economics of search are covered as well as estimation methods used in search theory and topics covered include job search, turnover, unemployment, liquidity, house selling, real options and auctions. The mathematical methods used in search theory such as dynamic programming are reviewed as well as structural estimation methods and econometric methods for duration models. The authors also explore the classic sequential search model and its extensions in addition to recent advances in equilibrium search theory.

Theory of Optimal Search

Theory of Optimal Search PDF Author:
Publisher: Elsevier
ISBN: 0080956270
Category : Mathematics
Languages : en
Pages : 275

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Book Description
In this book, we study theoretical and practical aspects of computing methods for mathematical modelling of nonlinear systems. A number of computing techniques are considered, such as methods of operator approximation with any given accuracy; operator interpolation techniques including a non-Lagrange interpolation; methods of system representation subject to constraints associated with concepts of causality, memory and stationarity; methods of system representation with an accuracy that is the best within a given class of models; methods of covariance matrix estimation;methods for low-rank matrix approximations; hybrid methods based on a combination of iterative procedures and best operator approximation; andmethods for information compression and filtering under condition that a filter model should satisfy restrictions associated with causality and different types of memory.As a result, the book represents a blend of new methods in general computational analysis,and specific, but also generic, techniques for study of systems theory ant its particularbranches, such as optimal filtering and information compression.- Best operator approximation,- Non-Lagrange interpolation,- Generic Karhunen-Loeve transform- Generalised low-rank matrix approximation- Optimal data compression- Optimal nonlinear filtering

Search Theory

Search Theory PDF Author: David V. Chudnovsky
Publisher: CRC Press
ISBN: 100094395X
Category : Mathematics
Languages : en
Pages : 176

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Book Description
On the solution of an optimal search problem with an exponential detection function. Covers one- and two-sided detection problems by furnishing continuous and discret time strategies; examines two-sided search strategies with solutions in hide and seek games in many discrete and continuous bounded

Search: Theory and Practice in Journalism Online

Search: Theory and Practice in Journalism Online PDF Author: Murray Dick
Publisher: Bloomsbury Publishing
ISBN: 1350306584
Category : Language Arts & Disciplines
Languages : en
Pages : 189

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Book Description
Whether uncovering breaking stories, finding reliable background information, or finding the right contributors for stories and packages, there is now a wealth of information available to journalists online - but where to begin? In Search: Theory and Practice in Journalism Online, Murray Dick provides a practical and theoretical overview of the journalistic research potential in various online tools. Written by a leading expert in the field, the book offers experience-based guidance into online search for journalism. Key features: - Up-to-date coverage of advanced search, the 'invisible web', social media, multimedia and the verification of online material - A critical overview of theory in online ethics, verification, and use of social media in journalism online - Original research into search theory, privacy, trust and rights issues online - Student-friendly pedagogy based upon professional practice and informed by experts in online research Search: Theory and Practice in Journalism Online is essential reading for undergraduate students of digital journalism, online reporting and journalism studies.

Foraging Theory Applied to Medical Information Searching

Foraging Theory Applied to Medical Information Searching PDF Author: Mai Dwairy
Publisher: Xlibris Corporation
ISBN: 1477128034
Category : Business & Economics
Languages : en
Pages : 204

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Book Description
Workload and other constraints prevent General Practitioners from accessing medical evidence for clinical decisions. This problem was studied in New Zealand GPs using Optimal Foraging Theory developed in ecology. GPs' information search strategies were modelled as sequential steps associated with costs and benefits measured from logbooks of actual searches. By consulting the most profitable sources, switching sources when unsuccessful, and double checking, GPs seem close to an optimal trade-off between maximizing search success and information reliability, and minimizing searching time. Subsidised training in information searching and provision of a literature search service are two inferred avenues to access medical evidence.

Recursive Macroeconomic Theory, fourth edition

Recursive Macroeconomic Theory, fourth edition PDF Author: Lars Ljungqvist
Publisher: MIT Press
ISBN: 026234873X
Category : Business & Economics
Languages : en
Pages : 1477

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Book Description
The substantially revised fourth edition of a widely used text, offering both an introduction to recursive methods and advanced material, mixing tools and sample applications. Recursive methods provide powerful ways to pose and solve problems in dynamic macroeconomics. Recursive Macroeconomic Theory offers both an introduction to recursive methods and more advanced material. Only practice in solving diverse problems fully conveys the advantages of the recursive approach, so the book provides many applications. This fourth edition features two new chapters and substantial revisions to other chapters that demonstrate the power of recursive methods. One new chapter applies the recursive approach to Ramsey taxation and sharply characterizes the time inconsistency of optimal policies. These insights are used in other chapters to simplify recursive formulations of Ramsey plans and credible government policies. The second new chapter explores the mechanics of matching models and identifies a common channel through which productivity shocks are magnified across a variety of matching models. Other chapters have been extended and refined. For example, there is new material on heterogeneous beliefs in both complete and incomplete markets models; and there is a deeper account of forces that shape aggregate labor supply elasticities in lifecycle models. The book is suitable for first- and second-year graduate courses in macroeconomics. Most chapters conclude with exercises; many exercises and examples use Matlab or Python computer programming languages.

Mathematical Optimization Theory and Operations Research

Mathematical Optimization Theory and Operations Research PDF Author: Michael Khachay
Publisher: Springer
ISBN: 3030226298
Category : Computers
Languages : en
Pages : 742

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Book Description
This book constitutes the proceedings of the 18th International Conference on Mathematical Optimization Theory and Operations Research, MOTOR 2019, held in Ekaterinburg, Russia, in July 2019. The 48 full papers presented in this volume were carefully reviewed and selected from 170 submissions. MOTOR 2019 is a successor of the well-known International and All-Russian conference series, which were organized in Ural, Siberia, and the Far East for a long time. The selected papers are organized in the following topical sections: mathematical programming; bi-level optimization; integer programming; combinatorial optimization; optimal control and approximation; data mining and computational geometry; games and mathematical economics.