Detecting abnormal and collusive bids in capped tendering

Ballesteros‐Pérez, Pablo; González-Cruz, Ma Carmen; Cañavate-Grimal, Antonio; Pellicer, Eugenio

doi:10.1016/j.autcon.2012.11.036

Cited by 39 publications

(31 citation statements)

References 57 publications

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“…El fenómeno de oferta de acompañamiento se puede producir de diferentes modos pero todos con el mismo objetivo, intentar conseguir una posición ventajosa en la puntuación econó-mica de una licitación en base a acuerdos previos con otras empresas competidoras (13) (14).…”

Section: Las Ofertas De Acompañamientounclassified

La contratación pública de obras: situación actual y puntos de mejora

Bargues¹,

González-Gaya²,

González-Cruz³

2015

Inf. constr.

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Cómo citar este artículo/Citation: Fuentes-Bargues, J. L., González-Gaya, C., González-Cruz, Mª C. (2015). La contratación pública de obras: situación actual y puntos de mejora. Informes de la Construcción, 67(537) RESUMENLa construcción pública ha sido, es y será uno de los pilares fundamentales del sector construcción español, si bien la actual situación de crisis económica y la reducción de la inversión pública en nuevas infraestructuras ha generado un descenso de actividad hasta niveles similares a los años noventa.El retorno a índices de actividad más elevados no solo se conseguirá con la recuperación de la economía del país, sino que será necesario realizar ciertas mejoras en los procesos de licitación con objeto de conseguir una mayor funcionalidad y flexibilidad en la contratación pública de obras.Palabras clave: Contratación pública; construcción; criterios de adjudicación; España; gestión de construcción. ABSTRACTPublic construction has been, is and will be one of the fundamental pillars of the Spanish construction sector, while the current economic depression and the reduction of public investment in new infrastructure has led to a decrease of activity as the 90's.The return to higher activity rates will be achieved not only with the economic recovery of the country but would be necessary to make some improvements in the bidding process in order to achieve greater functionality and flexibility in the public procurement of works.

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Section: Las Ofertas De Acompañamientounclassified

La contratación pública de obras: situación actual y puntos de mejora

Bargues¹,

González-Gaya²,

González-Cruz³

2015

Inf. constr.

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“…The second point is to find out the evidence of bid rigging by analyzing the bidding price. In this area, Ballesteros-Pérez et al found unusual bid prices by using tools to predict the bidding price cap and floor, which can provide effective support for the discovery of bid rigging behavior [18]. The third point is the behavior analysis of the participants in the bidding process.…”

Section: B Literature Review Of Bid Riggingmentioning

confidence: 99%

The Analysis of Water Project Bid Rigging Behavior Based on Complex Network

Cheng¹,

Liu²,

Meng³

et al. 2017

Proceedings of the 2017 International Conference on Applied Mathematics, Modeling and Simulation (AMMS 2017)

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Abstract-There are a series of issues in the development of water project bidding areas, the illegal act of bid rigging and colluding is particularly worth attention, and how to prevent the rigging and colluding behavior in the bidding process has already become a current hot topic. The community structure characteristics of complex networks was applied to analyze the bid rigging and colluding behavior of tenderers, the community detection model of bid rigging and colluding based on complex network was established, and the rationality and feasibility of the model were illustrated by analyzing the winning rate of the tenderers in the community, which showed that the community detection model of bid rigging and colluding based on complex network could provide some reference for the bidding supervision departments to identify the rigging colluding behavior.

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“…This tool, informally referred by its authors as the Smartbid model (Ballesteros-Pérez et al 2013b) (used hereinafter for the sake of simplicity) enables bidders to place their bids using statistical procedures based on previous bidding experiences that share the same Economic Scoring Formula (ESF).…”

Section: Introductionmentioning

confidence: 99%

Estimating Future Bidding Performance of Competitor Bidders in Capped Tenders

Ballesteros‐Pérez

González-Cruz

Fernández-Diego

et al. 2014

Journal of Civil Engineering and Management

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"Estimating future bidding performance of competitor bidders in capped tenders." Journal of Civil Engineering and Management. In press. 1-12.http://dx.doi.org/10. 3846/13923730.2014.914096 The authors recommend going to the publisher's website in order to access the full paper.If this paper helped you somehow in your research, feel free to cite it. This author's version of the manuscript was downloaded totally free from: Abstract. Research in Bid Tender Forecasting Models (BTFM) has been in progress since the 1950s. None of the developed models were easy-to-use tools for effective use by bidding practitioners because the advanced mathematical apparatus and massive data inputs required. This scenario began to change in 2012 with the development of the Smartbid BTFM, a quite simple model that presents a series of graphs that enables any project manager to study competitors using a relatively short historical tender dataset. However, despite the advantages of this new model, so far, it is still necessary to study all the auction participants as an indivisible group; that is, the original BTFM was not devised for analyzing the behavior of a single bidding competitor or a subgroup of them. The present paper tries to solve that flaw and presents a stand-alone methodology useful for estimating future competitors' bidding behaviors separately.Keywords: bid, tender, auction, construction, score, forecast.Reference to this paper should be made as follows: Ballesteros-Pérez, P.; González-Cruz, M. C.; Fernández-Diego, M.; Pellicer, E. 2014. Estimating future bidding performance of competitor bidders in capped tenders, Journal of Civil Engineering and Management

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Detecting abnormal and collusive bids in capped tendering

Cited by 39 publications

References 57 publications

La contratación pública de obras: situación actual y puntos de mejora

La contratación pública de obras: situación actual y puntos de mejora

The Analysis of Water Project Bid Rigging Behavior Based on Complex Network

Estimating Future Bidding Performance of Competitor Bidders in Capped Tenders

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