Search results for "ESTIMATION"
showing 10 items of 924 documents
Comparing Different Estimation Methodologies of Regional GDPs in Latin American Countries
2020
This chapter presents a survey of the different methods used to reconstitute long-run income estimations for the Latin American regions. The main purpose is to alert on potential biases derived from them. Although the bottom-up approaches based on the direct estimation of aggregate production, income or expenditure are the preferred option, they have barely been used. The main reason is that all of them are highly data-demanding. Instead, the indirect non-parametric approaches, combined sometimes with direct estimations for agriculture and extractive industries, have been the most recurrent way to estimate output. Out of the nine countries in the sample, seven have followed this “mixed appr…
Learning main drivers of crop progress and failure in Europe with interpretable machine learning
2021
Abstract A wide variety of methods exist nowadays to address the important problem of estimating crop yields from available remote sensing and climate data. Among the different approaches, machine learning (ML) techniques are being increasingly adopted, since they allow exploiting all the information on crop progress and environmental conditions and their relations with crop yield, achieving reliable and accurate estimations. However, interpreting the relationships learned by the ML models, and hence getting insights about the problem, remains a complex and usually unexplored task. Without accountability, confidence and trust in the ML models can be compromised. Here, we develop interpretab…
Bayesian two-stage regression with parametric heteroscedasticity
2008
In this paper, we expand Kleibergen and Zivot's (2003) Bayesian two-stage (B2S) model by allowing for unequal variances. Our choice for modeling heteroscedasticity is a fully Bayesian parametric approach. As an application, we present a cross-country Cobb–Douglas production function estimation.
Higher education institutions, economic growth and GDP per capita in European Union countries
2018
This paper presents an estimation of the contribution of Higher Education Institutions (HEIs) to economic growth and the Gross Domestic Product per capita of the European (EU) countries over the pe...
Unsteady State Water Level Analysis for Discharge Hydrograph Estimation in Rivers with Torrential Regime: The Case Study of the February 2016 Flood E…
2017
Discharge hydrograph estimation during floods, in rivers with torrential regime, is often based on the use of rating curves extrapolated from very low stage-discharge measurements. To get a more reliable estimation, a reverse flow routing problem is solved using water level data measured in two gauged stations several kilometers from each other. Validation of the previous analysis carried out on the flood event of February 2016 at the Europa Bridge and Castiglione Scalo sections of the Crati River (Cosenza, Italy) is based on the use of 'soft' discharge measurement data and the comparison of the water level data computed in the downstream gauged section by three different hydraulic models w…
ESTIMATION OF THE INDUCTION MOTOR PARAMETERS
1995
ABSTRACT The paper presents the method of determining the parameters of induction machine models in an objective, algorythmic way employing the modified stepwise-regression method. The elaborated method is versatile. It enables to calculate parameters on the basis of the static characteristic or dynamic runs. The effectiveness of the described method is demonstrated in the paper by the examples of estimation of these parameters, which confirm the convergent of proposed method.
The Long-Term Patterns of Regional Income Inequality in Spain, 1860–2000
2013
This paper studies the evolution of Spanish regional inequality from 1860 to 2000. The results point to the coexistence of two basic forces behind changes in regional economic inequality: differences in economic structure and labor productivity across regions. In the Spanish case, the initial expansion of industrialization during the period 1860-1900, in a context of growing economic integration of regions, promoted the spatial concentration of manufacturing in certain regions, which also benefited from the greatest advances in terms of labor productivity. Since 1900 and until 1985, the diffusion of manufacturing and services production to a greater number of locations generated the emulati…
Enhancing TIR Image Resolution via Bayesian Smoothing for IRRISAT Irrigation Management Project
2013
Accurate estimation of physical quantities depends on the availability of High Resolution (HR) observations of the Earth surface. However, due to the unavoidable tradeoff between spatial and time resolution, the acquisition instants of HR data hardly coincides with those required by the estimation algorithms. A possible solution consists in constructing a synthetic HR observation at a given time k by exploiting Low Resolution (LR) and HR data acquired at different instants. In this work we recast this issue as a smoothing problem, thus focusing on cases in which observations acquired both before and after time k are available. The proposed approach is validated on a region of interest for t…
Latent segmentation in business-to-business based on information and communication technology and relationship variables
2016
Our work is focused on the segmentation analysis in the Spanish tourist industry. Using a sample of travel agencies who evaluated the relationship with their main supplier (relationship value, relationship benefits and perceived information and communication technologies (ICTs) use), we attempt to examine the utility of these variables as specific and subjective segmentation criteria for identifying heterogeneous groups. The estimation of a finite mixture model suggests that these bases are able to discriminate firms into six latent classes with different levels of ICT use and relationship variables. The novelty in this work lies in the application of latent segmentation methodology and th…
Can Migration Decisions Be Affected by Income Policy Interventions? Evidence from Finland
2007
Haapanen M. and Ritsila J. (2007) Can migration decisions be affected by income policy interventions? Evidence from Finland, Regional Studies 41, 339–348. Using Finnish micro-level data, this paper maps out whether migration decisions can be affected by income policy interventions. The analysis focuses on individuals living in peripheral regions and distinguishes peripheral migration from growth-centre migration. In support of the human capital hypothesis, the estimation results imply that migration decisions can be affected by income policy interventions. For example, an intervention that would increase an individual's expected disposable income by 10%, given that he/she does not move to a…