The use of RAS and related models in manpower forecasting

Evans, G. J.; Lindley, Robert M.

doi:10.1007/bf00410551

Cited by 17 publications

(7 citation statements)

References 4 publications

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“…8 See Stone and Brown (1964), Evans and Lindley (1973), Kadas and Klafzky (1976) and Van Eijs and Borghans (1996). 9 For more details see Evans and Lindley (1973) and Van Eijs and Borghans (1996).…”

Section: Allocation Structurementioning

confidence: 99%

See 1 more Smart Citation

Supply and demand, allocation and wage inequality: an international comparison

Dupuy¹,

Borghans²

2005

Applied Economics

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An allocation model of workers differentiated by their field of study is developed to test whether international differences in the wage structure can be explained by differences in labour demand and supply in each country. The model explicitly takes into account the effects of supply and demand shifts on the allocation structure to disentangle country specific differences in the recruitment for one occupation from real supply-demand effects. Empirical results based on data for nine countries show that cross-country differences in wage inequality explain at least two-third of the differences in labour demand and supply.

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Section: Allocation Structurementioning

confidence: 99%

“…9 For more details see Evans and Lindley (1973) and Van Eijs and Borghans (1996). 1 0 Tinbergen notices that since the …rst solution concentrates all observations whereas the second solution spreads them evenly over the matrix, the actual allocation matrix may be somewhere in between.…”

Section: Allocation Structurementioning

confidence: 99%

Supply and demand, allocation and wage inequality: an international comparison

Dupuy¹,

Borghans²

2005

Applied Economics

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“…RAS is a method which constructs a matrix given the row and column sums, so that the conditions imposed by these sums is satisfied and the distance to another matrix is minimised (Evans & Lindley, 1973;Borghans & Heijke, 1996) [13]. Results.…”

Section: Higher Level Of Educational Attainment: Educational Inflatiomentioning

confidence: 99%

The Diffusion of Qualifications in the Spanish Labour Market

Giret¹,

Masjuan

1999

Journal of Education and Work

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Many politicians and employers consider the expansion of higher education in all industrial societies as an efficient way to modernize the economy and to decrease youth unemployment. However, a major part of the scientific debate focuses on skill upgrading versus downgrading of occupations and the relationships with schooling and vocational preparation. Our analysis is a tentative first step towards clarifying this trend and the relationships between educational policy and qualification requirements in Spain. More particularly, our purpose was to attempt to answer a central question is the increase in the number of jobs which require a high level of education sufficient to absorb the increasing education of the labour force, and is there a formal correspondence between changes in occupational structure and educational levels? Results of the methodology devised by several European teams, financed by the European Centre for Development of Vocational Training (CEDEFOP) and applied on the Spanish labour market allows us to provide some information in answer to this question. On the Spanish labour market, statistical results indicate that an occupation-education-age structure of an estimated theoretical labour force based on a 'supply-side effect' is more highly correlated with the observed occupation-education-age structure in 1990 than an estimated labour force based on a 'demand-side effect'. Despite the technological change or the industry rationalisation, the results seem to show a homogeneous propagation of the educational level for each occupation.

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“…Tilanus (1966) treated a comparable problem and derived the statistical correction method (SCM) for input–output predictions based on the observed structure of the predictions errors and supplementary statistical hypotheses, which gave almost the same results as RAS. Johansen, Alstadheim, and Langsether (1968) and Evans and Lindley (1973) argue in more general terms that individual elements contain more information than the row and column sums, and should therefore be taken into account for updating: where z i j are the interindustry transactions elements to be projected, z o i j are elements of an already known IO matrix, e i j is a stochastic term representing unexplained deviations, and r and s are chosen to minimize .…”

Section: Introductionmentioning

confidence: 99%

“…Our method will present an alternative to that of Johansen et al (1968) and Evans and Lindley (1973), in cases where data are available for a series of years, and thus takes the historical behavior of the cells of the matrix that has to be updated into account, while it is easy to implement. The method is based on the following assumptions:…”

Section: Introductionmentioning

confidence: 99%

Cell‐corrected Ras Method (Cras) for Updating or Regionalizing an Input–output Matrix

Mı́nguez

Oosterhaven²,

Escobedo

et al. 2009

Journal of Regional Science

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The RAS method is used to update or regionalize a single matrix such that it conforms to new row and column totals. This paper presents a correction of the RAS method (CRAS) that uses cell variation distributions calculated from multiple matrices of different periods or different regions. After the solution of the regular RAS, an additional optimization problem is solved that produces the most likely cell-corrections to the regular RAS solution. To test the behavior of CRAS, several simulations with a time series of input-output tables for The Netherlands for 1968-1986 are made. They show that-in situations of structural change-applying CRAS improves the regular RAS estimate. The method will also be applicable to traffic, trade, and migration matrices. Copyright (c) 2008, Wiley Periodicals, Inc.

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The use of RAS and related models in manpower forecasting

Cited by 17 publications

References 4 publications

Supply and demand, allocation and wage inequality: an international comparison

Supply and demand, allocation and wage inequality: an international comparison

The Diffusion of Qualifications in the Spanish Labour Market

Cell‐corrected Ras Method (Cras) for Updating or Regionalizing an Input–output Matrix

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