805 resultados para Forecasting of electricity market prices
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Electricity Markets are not only a new reality but an evolving one as the involved players and rules change at a relatively high rate. Multi-agent simulation combined with Artificial Intelligence techniques may result in sophisticated tools very helpful under this context. Some simulation tools have already been developed, some of them very interesting. However, at the present state it is important to go a step forward in Electricity Markets simulators as this is crucial for facing changes in Power Systems. This paper explains the context and needs of electricity market simulation, describing the most important characteristics of available simulators. We present our work concerning MASCEM simulator, presenting its features as well as the improvements being made to accomplish the change and challenging reality of Electricity Markets.
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We propose a graphical method to visualize possible time-varying correlations between fifteen stock market values. The method is useful for observing stable or emerging clusters of stock markets with similar behaviour. The graphs, originated from applying multidimensional scaling techniques (MDS), may also guide the construction of multivariate econometric models.
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This paper studies the changes in European stock market indexes composition from 1995 to 2015. It was found that there are mixed price effects producing abnormal returns around the effective replacement of added and deleted stocks. The price pressure hypothesis seems to hold for added stocks in some indexes but not for deleted stocks as there is not a clear inversion of behaviour after the replacement. Finally, the building and back testing of a trading strategy aiming to capture some of those abnormal returns shows it yields a Sharpe Ratio of 1.4 and generates an annualised alpha of 11%.
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Emerging markets have received wide attention from investors around the globe because of their return potential and risk diversification. This research examines the selection and timing performance of Canadian mutual funds which invest in fixed-income and equity securities in emerging markets. We use (un)conditional two- and five-factor benchmark models that accommodate the dynamics of returns in emerging markets. We also adopt the cross-sectional bootstrap methodology to distinguish between ‘skill’ and ‘luck’ for individual funds. All the tests are conducted using a comprehensive data set of bond and equity emerging funds over the period of 1989-2011. The risk-adjusted measures of performance are estimated using the least squares method with the Newey-West adjustment for standard errors that are robust to conditional heteroskedasticity and autocorrelation. The performance statistics of the emerging funds before (after) management-related costs are insignificantly positive (significantly negative). They are sensitive to the chosen benchmark model and conditional information improves selection performance. The timing statistics are largely insignificant throughout the sample period and are not sensitive to the benchmark model. Evidence of timing and selecting abilities is obtained in a small number of funds which is not sensitive to the fees structure. We also find evidence that a majority of individual funds provide zero (very few provide positive) abnormal return before fees and a significantly negative return after fees. At the negative end of the tail of performance distribution, our resampling tests fail to reject the role of bad luck in the poor performance of funds and we conclude that most of them are merely ‘unlucky’.
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List of names and prices signed by Albert W. Sampson, n.d.
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This book investigates country-specific responses to privatisation by examining two of the most important Latin American examples of the 1990s, the Argentine and the Brazilian programmes, and one essential public service sector, electricity. In doing so, it aims to: identify the impact of privatisation on electricity sector employees in Argentina and Brazil during the 1990s; explore how the impact came about; and analyse the reasons for this impact. A multi-dimensional perspective provides a comparative analysis of privatisation processes, regulatory contexts, and results, striving to capture the phenomenon by combining insights from political and economic analysis.
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Planners in public and private institutions would like coherent forecasts of the components of age-specic mortality, such as causes of death. This has been di cult to achieve because the relative values of the forecast components often fail to behave in a way that is coherent with historical experience. In addition, when the group forecasts are combined the result is often incompatible with an all-groups forecast. It has been shown that cause-specic mortality forecasts are pessimistic when compared with all-cause forecasts (Wilmoth, 1995). This paper abandons the conventional approach of using log mortality rates and forecasts the density of deaths in the life table. Since these values obey a unit sum constraint for both conventional single-decrement life tables (only one absorbing state) and multiple-decrement tables (more than one absorbing state), they are intrinsically relative rather than absolute values across decrements as well as ages. Using the methods of Compositional Data Analysis pioneered by Aitchison (1986), death densities are transformed into the real space so that the full range of multivariate statistics can be applied, then back-transformed to positive values so that the unit sum constraint is honoured. The structure of the best-known, single-decrement mortality-rate forecasting model, devised by Lee and Carter (1992), is expressed in compositional form and the results from the two models are compared. The compositional model is extended to a multiple-decrement form and used to forecast mortality by cause of death for Japan
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Esta tesis surge como una oportunidad de crear una herramienta de mejora en las empresas, para controlar los inventarios de la manera más adecuada. Debido a los desórdenes de los precios en el mercado, las promociones no planeadas, y la confrontación de pronósticos optimistas Vs. Pronósticos conservadores, se presenta un gran volumen de devoluciones, repercutiendo en el deterioro de la cartera y afectando directamente las metas estratégicas de las empresas. Tras esta clara oportunidad de mejora, se toma la decisión de evaluar el modelo de pronóstico que arroje los valores más acertados para la planeación de la demanda. Por otro lado, se analizo el mejor modelo de inventarios con sus respectivos indicadores de control. Dando como resultado una herramienta parametrizada en Excel, que arroja datos de pronósticos de ventas más acertados y optimiza la gestión de los inventarios. Esta herramienta contiene un modelo de gestión de inventarios de revisión continua, lo cual brinda información más acertada de la demanda que enfrenta la compañía, las ventas que puede generar, y los procesos que necesita planear para respaldar su actividad.
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prospect of Ikea considering Indian market