Data Envelopment Analysis

Measurement of the efficiency of management on stud farms using the DEA method

by Robert Rusielik

Folia Universitatis Agriculturae Stetinensis, Oeconomica 2000 No. 38 pp. 85-98; ISSN1230-770X Polish language.

DEA (Data Envelopment Analysis) was applied to 29 Polish horse-breeding establishments, with reference to data from... more DEA (Data Envelopment Analysis) was applied to 29 Polish horse-breeding establishments, with reference to data from 1996 and 1997 covering income from sales and subsidies, land area, fixed assets, remuneration, and use of materials and energy. Average sales income rose from 4,250,000 to 4,307,000 złotys during the study period, while land area contracted by an average of 5.4%. The average value of fixed assets rose from 4,569,000 to 4,826,000 zł., while average remuneration costs were respectively 1,447,000 and 1,559,000 zł. Energy and material costs also rose. Efficiency indices dropped somewhat from 1996 to 1997, 15 establishments being rated as efficient in the first year and 13 in the next. Economy of scale enabled average reduction of costs of 2.6% in 1996 and 4.1% in 1997. In general it was found that there was potential for raising efficiency through optimal outlay combinations. This applied particularly to land area and the value of fixed assets, and to a lesser but still important degree to costs. This type of analysis is recommended for use in the development strategy of the State Agency administering stud farms as well as within the enterprises themselves.

Determining Efficiencies of Hybrid Cellular Manufacturing Systems Using Data Envelopment Analysist

by Joseph Sarkis

Joseph Sarkis and Girish Shambu, Journal of Design and Manufacturing Automation, Vol. 1, No. 4, pp. 301-315, 2002.

Hybrid cellular manufacturing (CM) systems are well represented in manufacturing practice and thus constitute a... more Hybrid cellular manufacturing (CM) systems are well represented in manufacturing practice and thus constitute a fertile area of research. This work studies the performance of hybrid CM systems by means of data envelopment analysis (DEA). Since DEA allows for simultaneous analysis of multiple inputs and outputs of a system, it provides for a comprehensive investigation of CM performance under a wide variety of experimental conditions. For the purpose of measuring system efficiency, the number of machines and the degree of set up reduction are used as inputs, and flow time, work-in-progress (WIP) inventory and job tardiness are used as outputs. Results indicate that the hybrid systems in the study perform best at a low to intermediate degree of cellularization

Sea-level rise in Indonesia: on adaptation priorities in the agricultural sector

by Insa Niemeyer

A Integração entre a Análise de Envoltória de Dados e o Apoio Multicritério à Decisão: Uma Revisão

by Marcela González-Araya

Co-authored with Marcos Pereira Estellita Lins,Luiz Flavio Autran Monteiro Gomes
Reference:
González-Araya, M.C., Lins, M.P.E., Gomes, L.F.A.M., 2000, “La Integración entre el Análisis y Encapsulamiento de Datos y el Apoyo Multicriterio a la Decisión: Una Revisión”. En: Análise Envoltória de Dados e Perspectivas de Integração no Ambiente do Apoio à Decisão, Marcos Pereira Estellita Lins e Lidia Angulo Meza (Eds.), COPPE/UFRJ, Rio de Janeiro, Brasil, pp. 111-124. ISBN: 85-285-0037-3.

This paper presents a survey about the integration developed in the last years between Data Envelopment Analysis (DEA)... more This paper presents a survey about the integration developed in the last years between Data Envelopment Analysis (DEA) and Multiple Criteria Decision Aid (MCDA). One of the principal problems in DEA is to assess the Decision Making Units (DMUs) relative efficiencies. This survey shows how Multiple Criteria Decision Aid methods have been used, in alternative way, to assess these relative efficiencies including preference structure of stakeholders by value judgements. The value judgements can bring either DEA weights restrictions or the identification of different targets for each DMU. For the other hand, some decision making problematiques have been dealt with Data Envelopment Analysis structure, specifically for the cases of  alternatives selection and alternatives ranking.

APLICACIÓN DE DEA PARA MEDIR LA EFICIENCIA DE UNA PLANTA DESHIDRATADORA DE MANZANAS

by Marcela González-Araya

Co-authored with Rodrigo A. Sánchez-Ramírez
Reference:
González-Araya, M.C., Sánchez-Ramírez, R.A., 2011, “Aplicación de DEA para medir la eficiencia de una planta deshidratadora de manzanas”, Anales del XLIII SBPO – Simpósio Brasileiro de Pesquisa Operacional, págs. 9.

En este trabajo se realiza un análisis de eficiencia considerando las temporadas comprendidas entre los años 2007 y... more En este trabajo se realiza un análisis de eficiencia considerando las temporadas comprendidas entre los años 2007 y 2010 para la producción de manzana deshidratada en una planta de la Región del Maule, Chile. La metodología utilizada es DEA, considerando variables discrecionales  dado que se presentan factores de producción que podrían ser controlados por el Departamento de Operaciones. Los resultados obtenidos indican que variables relacionadas a características de la fruta son relevantes para una mejor eficiencia del proceso de deshidratado, lo que tiene un impacto en reducción de costos relacionado a consumo de fruta fresca por kilogramo de producto deshidratado. Por esta razón, se constató que mientras mayor sea el tiempo de almacenamiento de la fruta fresca, peores serán los indicadores de calidad de la fruta al inicio del proceso, influyendo negativamente sobre los resultados de eficiencia de la producción.

Evaluación de propiedades deseables para las medidas de eficiencia basadas en DEA

by Marcela González-Araya

Co-authored with Carlos Sequeida Muñoz

En este estudio se presenta una comparación de seis modelos DEA, dos modelos básicos (CCR y BCC) y cuatro modelos que... more En este estudio se presenta una comparación de seis modelos DEA, dos modelos básicos (CCR y BCC) y cuatro modelos que incorporan medidas de eficiencia no radiales (Modelo Aditivo, Medida de Russell, Medida de Zieschang y RAM), los cuales se analizan en base a algunas propiedades deseables de las medidas de eficiencia para apyar la elección del tomador de decisiones. El aporte de este análisis es que las comparaciones están hechas en términos prácticos, buscando aproximarse a la realidad del tomador de decisiones. Otra contribución de este estudio es el uso de medidas de eficiencia relativamente nuevas.

Una Clasificación de los Modelos para Superar los Problemas de la Envolvente Impropia en el Análisis y Encapsulamiento de Datos

by Marcela González-Araya

Reference:
González-Araya, M.C., 2005, “Una Clasificación de los Modelos para Superar los Problemas de la Envolvente Impropia en el Análisis y Encapsulamiento de Datos”, Anales del 1er Seminario Euro-Latino Americano de Sistemas de Ingeniería, (SELASI – 2005), 26-30 de Abril.

En la literatura del Análisis y Encapsulamiento de Datos (DEA) pueden ser encontrados diferentes modelos para superar... more En la literatura del Análisis y Encapsulamiento de Datos (DEA) pueden ser encontrados diferentes modelos para superar el problema ocasionado al proyectar radialmente las unidades ineficientes en regiones no Pareto-Koopmans eficientes de la frontera construida en DEA. Estos modelos buscan entregar a todas las unidades evaluadas, ya sea una estimación de la medida de eficiencia, y/o metas diferentes de la obtenida con la proyección radial a la frontera eficiente. En este artículo es propuesta una clasificación de estos modelos según las hipótesis asumidas con relación al conjunto de posibilidades de producción. De esta forma, se presenta a los usuarios de DEA un criterio de apoyo para la selección de los modelos DEA. Siendo así, es posible encontrar modelos que alteran el conjunto de posibilidades de producción y otros que no lo alteran. Los modelos incluidos en cada clasificación son descritos brevemente.

Organisation and efficiency of agricultural enterprises in transformation: an empirical analysis of the Gorzow Voivodeship

by Robert Rusielik

The economy in Poland has changed tremendously in recent years. Agricultural enterprises
can defend their market... more The economy in Poland has changed tremendously in recent years. Agricultural enterprises
can defend their market share only if they are able to adjust quickly and efficiently to new
circumstances. The most effective strategy to cope with changing operating conditions is a
strategy of permanent development of human resources. This strategy must embrace a
constant improvement of professional entrepreneurial skills and of management structures
within organizations. Only such a strategy will allow businesses to hold on to or to increase
their market standing despite strong competition. It will also allow them to meet, for instance,
the newly introduced standardisation procedures for goods produced and supplied. This
challenge holds especially true for agricultural enterprises that operate in highly competitive
markets; markets which are currently characterised by a permanent surplus of supply over
demand and a great number of businesses, mainly of small or medium size. Demand in the
agricultural market is exerted by millions of consumers, all of different consumption habits
with idiosyncratic consumption preferences.
Agricultural producers as a group are extremely sensitive to any kind of change in their
environment. This is especially true in the current transition period when a worsening of
economic conditions can be observed: an economic downturn caused by the price of inputs
increasing at a faster rate than agricultural product prices and an ineffective agricultural
policy.
One of the agricultural production factors which allows for quick adjustment to change and
which can thus be used to improve one’s market position is the human factor. It is a wellknown
fact that a good level of professional skills in combination with ongoing means of
furthering and updating professional qualifications of workers can help to facilitate coping
with market challenges.

Changes in the effi ciency of farming in the provinces after the Polish accession to the European Union Zmiany efektywności działalności rolniczej w województwach polski po akcesji do Unii Europejskiej

by Robert Rusielik

Published in EKONOMIKA i ORGANIZACJA GOSPODARKI ŻYWNOŚCIOWEJ NR 84 (2010). Zeszyty Naukowe SGGW. Pages 13-22. Polish language.

The article presents the results of measuring the technical effi ciency of agriculture in Poland using two alternative... more The article presents the results of measuring the technical effi ciency of agriculture in Poland using two alternative methods of group analysis of the border (frontier analysis): method SFA (Stochastic Frontier Analysis) and DEA method (Data Envelopment Analysis). The main objective of this study was to determine what changes in the effi ciency of agricultural activity took place after the Polish accession to the European Union. For this purpose, there were compared the effectiveness of the years 2005 and 2008. The results show that, depending on the
econometric model may show the effectiveness of changes either increasing or decreasing trend in the case of the same province.

THE EFFECTIVENESS OF PENSION FUNDS MANAGEMENT BY THE UNIVERSAL PENSION FUND SOCIETIES - EXAMPLE OF THE FRONTIER ANALYSIS

by Robert Rusielik

QUANTITATIVE METHODS IN ECONOMICS Vol. XII, No. 2 page 301-311.
SGGW Warszawa 2011. Polish language.

Effectiveness of the Universal Pension Fund Societies which are managers of the Open Pension Funds are usually... more Effectiveness of the Universal Pension Fund Societies which are managers of the Open Pension Funds are usually evaluated by comparing the
different types of financial and economic indicators; comparing the value
of the investment portfolio or by changing the value of the units. These
comparisons are mostly incomplete and also there are no multi-dimensional
comparisons. The article attempt to check the effectiveness of the Universal
Pension Fund Societies using two alternative methods of frontier analysis: the
parametric Stochastic Frontier Analysis (SFA) and nonparametric Data
Envelopment Analysis (DEA). Two alternative models were used for each of
the methods. Comparison of the effectiveness of Universal Pension Fund
Societies from both, the customer's and the company's perspective were also
done in the article. The research have shown that there are differences in the
effectiveness of the Universal Pension Fund Societies based on value
of portfolio as well as the perspective used in the measurement.

Using Data Envelopment Analysis-Neural Network Model to Evaluate Hospital Efficiency

by ömür tosun

Due to an increasing amount of public resources dedicated to health care systems it’s important to measure the... more Due to an increasing amount of public resources dedicated to health care systems it’s important to measure the efficiency of hospitals. Systematically analyzing hospital systems is one important way to discover and improve inefficiencies.
The purpose of this paper is to propose a Data Envelopment Analysis (DEA) - Artificial Neural Network (ANN) based model to measure and evaluate the efficiency scores of hospitals. DEA is straight forward but requires time, knowledge and more process time than ANN. By combining these two methods, it’s possible to lessen the shortcomings of DEA.
In the proposed model, DEA classifies each hospital as either efficient or inefficient. Input and output variables of DEA are used for the inputs whereas efficiency scores of the hospitals are defined as the outputs of the ANN system. After the system is trained, the ANN model is applied to the test data to classify each hospital into efficient or inefficient.
The results are then compared with each other and Discriminant Analysis (DA) is used to compare with ANN. Results show that, a well-trained ANN performs good classification, and even gives better solutions than DA. Also ANN shows the advantage of using less CPU time and computer resources than the DEA, especially in large data sets.

Organisation and Efficiency of Agricultural Enterprises in Transformation: An Empirical Analysis of the Gorzów Voivodeship

by Robert Rusielik

Co-authored with Michał Świtłyk, Tomasz Sobczak

The first analysis was carried out using data which were collected from surveys amongst the
owners of 36... more The first analysis was carried out using data which were collected from surveys amongst the
owners of 36 privately owned farms and the managers of 14 limited partnerships. The data
cover the period between 1994 and 1997.
The incentive to conduct research on large farms in the Gorzów Voivodeship using the Data
Envelopment Analysis method (DEA) lay in the outcome of various earlier studies on the
financial standing of limited partnerships leasing real estate from APA in the Gorzów
Voivodeship in 1996 and 1997. Apart from general adjustment processes, these inquiries
proved that, in 1997, the economic condition of the farms analysed was worse when compared
to the situation in 1996; the following ratios worsened: the financial support ratio, the liquidity
ratio, the turnover ratio, the profitability ratio and the cost level ratio (see Świtłyk, 1998,
1999).
These results determined the focus of our research, namely input efficiency in particular
limited partnerships. The base of our calculations was a research model which consisted of
efficiency measures focusing on firms’ inputs The analysis was carried out on a sample of 90
firms in the years between 1995 and 1997 (30 firms every year). Other data material was
collected from national statistical office reports on incomes, costs and financial results (F-O1)
and statistics about land usage, crop area and yields (R-O5).
In the next section we briefly discuss privatisation in agriculture. Sections 3 and 4 present
results from our survey. Section 5 concludes.

ZMIANY EFEKTYWNOŚCI TECHNICZNEJ ROLNICTWA W POLSCE W LATACH 1998-2006

by Robert Rusielik

Co-authored with Michał Świtłyk ANNALS OF AGRICULTURAL SCIENCE, Series G Economy, Vol. 96 No. 3 pages 20-27

In a research author has performed an analysis of the productivity of Polish agriculture in the years 1998-2006, using... more In a research author has performed an analysis of the productivity of Polish agriculture in the years 1998-2006, using the Malmquist index of productivity. The results of the calculations have shown in which period productivity has increased or decreased, and what was a general trend in the considered period. The usage of decomposition of calculated indices led to the decision, what factors have an impact on changes of productivity. The presented results of the research included the synthetic results covering the whole period analyzed.

Relative efficiency of oilseed crops production in the selected farms in Europe and the world in 2005

by Robert Rusielik

Acta Scientiarum Polonorum, Oeconomia 6 (4) 2007,pages 57--62, Warszawa 2007. Co-authored with Jacek Prochorowicz.

The article contains an analysis of production efficiency of oilseed crops in selected farms associated in... more The article contains an analysis of production efficiency of oilseed crops in selected farms associated in International Farm Comparison Network (IFCN). Mt RE (Metric tonne Rapeseed Equivalent) is used for the purpose of comparison of oilseed crops production efficiency. Technical efficiency was computed by applying Data Envelopment Analysis (DEA). Analysis of efficiency shows that products of soya and sunflower can rival
products of rape.

Wyniki analizy granicznej jako kryterium w wyborach strategicznych The results of the frontier analysis as a criterion in strategic choices

by Robert Rusielik

Co-authored with Michał Świtłyk. Published in Zeszyty Naukowe Uniwersytet Ekonomiczny w Poznaniu. Nr 169, 2011, s. 236-245

Author presents, in an article, an example of two methods of frontier analysis, a nonparametric Data Envelopment... more Author presents, in an article, an example of two methods of frontier analysis, a nonparametric Data Envelopment Analysis (DEA) and a parametric Stochastic Frontier Analysis (SFA). Two alternative econometric models were used in each of the methods. The results obtained using these methods may be a source of information useful to strategic choices especially for determining the strategic position. Group of Polish General Pension Funds were used as reference material.

Technical efficiency of operation of universal pension fund societies and its changes - an example of frontier analysis application

by Robert Rusielik

Finanse publiczne red. nauk. Jerzy Sokołowski, Arkadiusz Żabiński Wrocław : Wydawnictwo Uniwersytetu Ekonomicznego, 2011 S. 375-386 .- ISBN 978-83--7695-184-3

This article contains a comparative study of technical efficiency of Universal Pension Fund Societies. The aim of this... more This article contains a comparative study of technical efficiency of Universal Pension Fund Societies. The aim of this study was to use the method of Data Envelopment Analysis (DEA) to measure performance from the perspective of society as an economic entity. In addition, changes in performance have been tested over time with the aid Malmquist productivity index

PORÓWNANIE EFEKTYWNOŚCI SKALI PRODUKCJI MLEKA W WYBRANYCH GOSPODARSTWACH EUROPY W 2005 ROKU

by Robert Rusielik

Summary The paper aims to compare the scale efficiency of milk production on the basis of data from selected farms... more Summary The paper aims to compare the scale efficiency of milk production on the basis of data from selected farms associated in European Dairy Farmers network (EDF). The date for analysis were collected from 262 farms in 2005. The scale efficiency of milk production was computed by applying Data
Envelopment Analysis (DEA). The results of the study showed that 188 farms were inefficient, 79 farms had to high scale of production and 109 farms had too low scale of production. The later farms should therefore change the structure of inputs and outputs to get the optimal scale of production.

Extensions in efficiency measurement of alternate machine component grouping solutions via data envelopment analysis

by Joseph Sarkis

Talluri, S., and Sarkis, J., (1997), IEEE Transactions on Engineering Management, Vol. 44, No. 3, 299-304.

This paper focuses on extending the analysis of an efficiency and productivity study on a cellular manufacturing... more This paper focuses on extending the analysis of an efficiency and productivity study on a cellular manufacturing system (CMS) as first introduced by Shafer and Bradford. Shafer and Bradford's initial study introduced a methodology that utilized simulation and data envelopment analysis (DEA) for a multiple performance measure analysis of a CMS. This paper presents an extension to their methodology by incorporating cross-efficiency measures and cluster analysis. One important contribution of this research is in identifying “overall” efficient and “false positive” layouts that are of high managerial significance, Another contribution is in selecting more appropriate targets for poorly performing layouts to use as a benchmark. An interesting managerial insight that emerged from this study is that, in general, cellular layouts with six cells have outperformed hybrid layouts and other cellular layouts. Also, this study concludes that “overall” efficient layouts must be considered by manufacturing engineers and managers in the design of a CMS. Last, the practical problems associated with the improvement of the “false positive” layouts are addressed

Using DEA and Malmquist Index to Compare Hospital Productivity Changes in Antalya

by ömür tosun

written with Hande ERDOĞAN AKTAN

Data Envelopment Analysis (DEA) is based on comparing relative performance of decision units with multiple inputs and... more Data Envelopment Analysis (DEA) is based on comparing relative performance of decision units with multiple inputs and outputs. Efficiency analysis consists only one year and doesn’t give any information about the change in time. If panel data for the decision units is available the change in the Total Factor Productivity (TFP) can be examined.

In this paper, the development of efficiency in Antalya region hospitals from 2001 to 2006 is analyzed by using Malmquist index. Two different input-oriented models are applied; first to a set of 16 public hospitals and then for comparing the types of hospitals a set of 22 hospitals, including both public and private hospitals. 4 outputs and 3 inputs are used.

This study gives information about the changes of efficiency during the years and the type of inefficiencies. The relative efficiency of public and private hospitals has been reviewed in this paper. Changes in efficiency and changes in technology are also analyzed.

A methodological framework for evaluating environmentally conscious manufacturing programs

by Joseph Sarkis

Joseph Sarkis, "A methodological framework for evaluating environmentally conscious manufacturing programs," Computers & Industrial Engineering 36 (1999) 793-810

The evaluation of environmentally conscious manufacturing programs is similar to many strategic initiatives and their... more The evaluation of environmentally conscious manufacturing programs is similar to many strategic initiatives and their justification methodologies. This similarity arises from the fact that there are multiple factors that need to be considered, many of which have long-term and broad implications for an organization. The types of programs that could be evaluated range from the appropriate selection of product designs and materials to major disassembly programs that may be implemented in parallel with standard assembly programs. The methodology will involve the synthesis of the analytical network
process (ANP) and data envelopment analysis (DEA). We consider some of the more recent modeling innovations in each of these areas to help us address a critical and important decision that many managers and organizations are beginning to face. An illustrative example provides some insights into the application of this methodology. Additional issues and research questions within are also identified.