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Heterogeneous Agents
In economic theory and econometrics, the term heterogeneity refers to differences across the units being studied. For example, a macroeconomic model in which consumers are assumed to differ from one another is said to have heterogeneous agents. Unobserved heterogeneity in econometrics In econometrics, statistical inferences may be erroneous if, in addition to the observed variables under study, there exist other relevant variables that are unobserved, but correlated with the observed variables; dependent and independent variables .M. Arellano (2003), Panel Data Econometrics', Chapter 2, 'Unobserved heterogeneity', pp. 7-31. Oxford University Press. Methods for obtaining valid statistical inferences in the presence of unobserved heterogeneity include the instrumental variables method; multilevel models, including fixed effects and random effects models; and the Heckman correction for selection bias. Economic models with heterogeneous agents {{Further, Agent-based computational ec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Economic Theory
Economics () is a behavioral science that studies the production, distribution, and consumption of goods and services. Economics focuses on the behaviour and interactions of economic agents and how economies work. Microeconomics analyses what is viewed as basic elements within economies, including individual agents and markets, their interactions, and the outcomes of interactions. Individual agents may include, for example, households, firms, buyers, and sellers. Macroeconomics analyses economies as systems where production, distribution, consumption, savings, and investment expenditure interact; and the factors of production affecting them, such as: labour, capital, land, and enterprise, inflation, economic growth, and public policies that impact these elements. It also seeks to analyse and describe the global economy. Other broad distinctions within economics include those between positive economics, describing "what is", and normative economics, advo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamic Stochastic General Equilibrium
Dynamic stochastic general equilibrium modeling (abbreviated as DSGE, or DGE, or sometimes SDGE) is a macroeconomics, macroeconomic method which is often employed by monetary and fiscal authorities for policy analysis, explaining historical time-series data, as well as future forecasting purposes. DSGE econometric modelling applies general equilibrium theory and microfoundations, microeconomic principles in a tractable manner to postulate economic phenomena, such as economic growth and business cycles, as well as economic policy, policy effects and market shocks. Terminology As a practical matter, people often use the term "DSGE models" to refer to a particular class of classically quantitative econometrics, econometric models of business cycles or economic growth called real business cycle (RBC) models.Christiano (2018) DSGE models were initially proposed in the 1980s by Kydland & Prescott, and Long & Plosser;Long & Plosser (1983) Charles Plosser described RBC models as a precurso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Keynesian Economics
New Keynesian economics is a school of macroeconomics that strives to provide microfoundations, microeconomic foundations for Keynesian economics. It developed partly as a response to criticisms of Keynesian macroeconomics by adherents of new classical macroeconomics. Two main assumptions define the New Keynesian approach to macroeconomics. Like the New Classical approach, New Keynesian macroeconomic analysis usually assumes that households and firms have rational expectations. However, the two schools differ in that New Keynesian analysis usually assumes a variety of market failures. In particular, New Keynesians assume that there is imperfect competition in price and wage setting to help explain why prices and wages can become "Sticky (economics), sticky", which means they do not adjust instantaneously to changes in economic conditions. Wage and price stickiness, and the other present descriptions of market failures in New Keynesian Model (macroeconomics), models, imply that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commodity
In economics, a commodity is an economic goods, good, usually a resource, that specifically has full or substantial fungibility: that is, the Market (economics), market treats instances of the good as equivalent or nearly so with no regard to who Production (economics), produced them. The price of a commodity good is typically determined as a function of its market as a whole: well-established physical commodities have actively traded spot market, spot and derivative (finance), derivative markets. The wide availability of commodities typically leads to smaller profit margins and diminishes the importance of factors (such as brand, brand name) other than price. Most commodities are raw materials, basic resources, agriculture, agricultural, or mining products, such as iron ore, sugar, or grains like rice and wheat. Commodities can also be mass-produced unspecialized products such as chemical substance, chemicals and computer memory. Popular commodities include Petroleum, crude ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agent-based Computational Economics
Agent-based computational economics (ACE) is the area of computational economics that studies economic processes, including whole economies, as dynamic systems of interacting agents. As such, it falls in the paradigm of complex adaptive systems. In corresponding agent-based models, the " agents" are "computational objects modeled as interacting according to rules" over space and time, not real people. The rules are formulated to model behavior and social interactions based on incentives and information. Such rules could also be the result of optimization, realized through use of AI methods (such as Q-learning and other reinforcement learning techniques). As part of non-equilibrium economics, the theoretical assumption of mathematical optimization by agents in equilibrium is replaced by the less restrictive postulate of agents with bounded rationality ''adapting'' to market forces. ACE models apply numerical methods of analysis to computer-based simulations of complex dynamic pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agent (economics)
In economics, an agent is an actor (more specifically, a decision maker) in a model of some aspect of the economy. Typically, every agent makes decisions by solving a well- or ill-defined optimization or choice problem. For example, ''buyers'' (consumers) and ''sellers'' ( producers) are two common types of agents in partial equilibrium models of a single market. Macroeconomic models, especially dynamic stochastic general equilibrium models that are explicitly based on microfoundations, often distinguish households, firms, and governments or central banks as the main types of agents in the economy. Each of these agents may play multiple roles in the economy; households, for example, might act as consumers, as workers, and as voters in the model. Some macroeconomic models distinguish even more types of agents, such as workers and shoppers or commercial banks. The term ''agent'' is also used in relation to principal–agent models; in this case, it refers specifically to someone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kenneth Judd
Kenneth Lewis Judd (born March 24, 1953) is a computational economist at Stanford University, where he is the Paul H. Bauer Senior Fellow at the Hoover Institution. He received his PhD in economics from the University of Wisconsin in 1980. He is perhaps best known as the author of ''Numerical Methods in Economics'', and he is also among the editors of the ''Handbook of Computational Economics'' and of the '' Journal of Economic Dynamics and Control''. He is one of two authors behind the Chamley–Judd result that the optimal tax rate on capital income is zero. References External links Kenneth Judd's homepage* * Kenneth L. Judd (1980''Four Essays in Economic Theory'' Ph.D. dissertation, University of Wisconsin-Madison. * Jess Gaspar and Kenneth L. Judd (1997). "Solving Large-Scale Rational-Expectations Models," ''Macroeconomic Dynamics'', 1(1), pp. 45–75Abstract * Kenneth L. Judd (1997). "Computational Economics and Economic Theory: Substitutes or Complements?" ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Economic Dynamics And Control
The ''Journal of Economic Dynamics and Control ''(JEDC) is a peer-reviewed scholarly journal devoted to computational economics, dynamic economic models, and macroeconomics. It is edited at the University of Amsterdam and published by Elsevier Elsevier ( ) is a Dutch academic publishing company specializing in scientific, technical, and medical content. Its products include journals such as ''The Lancet'', ''Cell (journal), Cell'', the ScienceDirect collection of electronic journals, .... It has been published since 1979. The journal sometimes devotes special issues to particular topics, like 'Complexity in Economics and Finance' (May 2009), 'Dynamic Stochastic General Equilibrium Modelling' (August 2008), and 'Applications of Statistical Physics in Economics and Finance' (January 2008). In some years it has also published selected articles from the annual meeting of the Society for Computational Economics. In their ranking of academic impact of economics journals, Kalaitzid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wouter Den Haan
Wouter J. den Haan (or Denhaan) (born 22 July 1962) is a professor of economics at the London School of Economics, research fellow and programme director of the CEPR, and co-director of the Centre for Macroeconomics. Currently, his main areas of interest are business cycles, frictions in financial and labor markets, and numerical methods to solve models with a large number of heterogeneous agents. Biography He graduated cum laude from the MA program at Erasmus University, and received his PhD degree at Carnegie Mellon University in 1991. This dissertation won him the Alexander Henderson Award for excellence in economics, an award also won by Nobel Laureates Oliver Williamson, Dale T. Mortensen, Finn Kydland and Edward Prescott. After earning his PhD he became an assistant professor at the University of California at San Diego, where he was a professor from 2001 to 2004. At the beginning of 2003 he moved back to Europe and became a professor of economics at London Business ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Political Economy
The ''Journal of Political Economy'' is a monthly peer-reviewed academic journal published by the University of Chicago Press. Established by James Laurence Laughlin in 1892, it covers both theoretical and empirical economics. In the past, the journal published quarterly from its introduction through 1905, ten issues per volume from 1906 through 1921, and bimonthly from 1922 through 2019. The editor-in-chief is Esteban Rossi-Hansberg (University of Chicago). It is considered one of the top five journals in economics. JPE Micro and JPE Macro In 2023, University of Chicago Press announced the establishment of Journal of Political Economy Microeconomics (JPE Micro) and Journal of Political Economy Macroeconomics (JPE Macro), two new journals that are vertically integrated with the Journal of Political Economy. Abstracting and indexing The journal is abstracted and indexed in EBSCO, ProQuest, EconLit, Research Papers in Economics, Current Contents/Social & Behavioral Scien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Per Krusell
Per Lennart Krusell, born 1959, is a Swedish macroeconomic theorist who is currently the Torsten and Ragnar Soderberg Chair in Economics and the Institute for International Economic Studies, Stockholm University, as well as Centennial Professor of Economics at the London School of Economics. Until recently, he was a professor of economics at Princeton University and, before that, held positions at the University of Rochester, the University of Pennsylvania, and Northwestern University. He received numerous awards and grants, most recently the 2007 Söderberg Prize and a 2.1 Million Euro 2008 senior research grant from the European Research Council. Krusell's research has focused on macroeconomics, broadly defined, with particular contributions in the areas of technological change, inequality, political economy, macroeconomic policy, and labor economics. He is currently pursuing a long-term project on the interactions between global climate change and the economy. He is especiall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
