Virtual queuing at airport security lanes

Lange, Robert D.; Samoilovich, I.; Rhee, Bo van der

doi:10.1016/j.ejor.2012.09.025

Cited by 56 publications

(23 citation statements)

References 17 publications

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“…There is no dispute over the point that there are reported applications in the literature, for example see Zhou et al (2011). However the scale of such problems pales in comparison to the size of problems that interior point methods can address, to the extent that Michalewicz (2012) million decision variables, constraints and objectives, while their convergence rate remains almost unaffected (Gondzio 2012), while to this day evolutionary algorithms mostly deal with problems with 2 or 3 objectives with relatively few addressing more, but no more than approximately 10, and with fewer than 100 decision variables (Kim et al 2012, Chiong and Kirley 2012, de Lange et al 2012, Wei et al 2012). Moreover there is not a single study available 1 that establishes a strong positive correlation between superior algorithm performance on test problems and real-world (and real-scale) problems.…”

Section: Discussionmentioning

confidence: 99%

An overview of population-based algorithms for multi-objective optimisation

Giagkiozis

Purshouse

Fleming

2013

International Journal of Systems Science

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In this work we present an overview of the most prominent population-based algorithms and the methodologies used to extend them to multiple objective problems. Although not exact in the mathematical sense, it has long been recognized that population-based multi-objective optimization techniques for real-world applications are immensely valuable and versatile. These techniques are usually employed when exact optimization methods are not easily applicable or simply when, due to sheer complexity, such techniques could potentially be very costly. Another advantage is that since a population of decision vectors is considered in each generation these algorithms are implicitly parallelizable and can generate an approximation of the entire Pareto front (PF) at each iteration. A critique of their capabilities is also provided.

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Section: Discussionmentioning

confidence: 99%

An overview of population-based algorithms for multi-objective optimisation

Giagkiozis

Purshouse

Fleming

2013

International Journal of Systems Science

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“…In complex environments such as an airport [7], the flow of passengers depends on a large number of variables: staff performance, passenger behaviour, hand luggage contents, sensitivity of metal detection systems, among others. Traditional approaches based on discrete event systems [8], [9] or queueing theory [10]- [12] model airport activity as a function of several such variables. However, these methods are difficult to tune because they are highly dependent on variables that are unobservable or modeled with (unrealistic) stationary distributions (e.g., arrival and service rates).…”

Section: Previous Workmentioning

confidence: 99%

Understanding People Flow in Transportation Hubs

Carvalho

Marques

Costeira

2018

IEEE Trans. Intell. Transport. Syst.

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In this paper, we aim to monitor the flow of people in large public infrastructures. We propose an unsupervised methodology to cluster people flow patterns into the most typical and meaningful configurations. By processing 3D images from a network of depth cameras, we build a descriptor for the flow pattern. We define a data-irregularity measure that assesses how well each descriptor fits a data model. This allows us to rank flow patterns from highly distinctive (outliers) to very common ones. By discarding outliers, we obtain more reliable key configurations (classes). Synthetic experiments show that the proposed method is superior to standard clustering methods. We applied it in an operational scenario during 14 days in the X-ray screening area of an international airport. Results show that our methodology is able to successfully summarize the representative patterns for such a long observation period, providing relevant information for airport management. Beyond regular flows, our method identifies a set of rare events corresponding to uncommon activities (cleaning, special security and circulating staff).

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“…The public wait is to a degree privatized and ownership claims from those other than queue members begin to take on legal and social meaning. Thus, priority lines or lanes (Alexander et al, 2012), virtual queuing (de Lange et al, 2013) and information incentives distributed to waiters by those outside the wait, all give time thinning benefits to those who pay these third parties for the privilege of advancing either more rapidly or with greater comfort than others.…”

Section: The Other Structural-legal Lensmentioning

confidence: 99%

Re-thinking queue culture: the commodification of thick time

Wexler

2015

International Journal of Sociology and Social Policy

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Purpose -The purpose of this paper is to highlight both the contribution and the present need to reconfigure the literature on "queue culture" as a precursor of the sociology of waiting. Design/methodology/approach -The study employs a legal-structural lens in comparing the initial conceptual treatment of the archetypal "waiting line" with the "line" modifying sociology of waiting that results in waiting rooms, number and telephone queues and in the experience of online waiting. Findings -The initial conception of the culture of the queue understates the importance of three factors: first, the role of third parties in the design, management and inculcation of rules binding those experiencing thick time; second the degree to which communication technology and its attachment to the "mobilities" paradigm has thinned the experience of thick time and lastly the degree to which the increasing commodification of the wait has resulted in the creation of waiting time as a form of pay as you go flexitime. Social implications -The social construction of waiting and the experience of thick time are shown to be increasingly part of the privatized market experience where queue management innovations not only are commercialized but have strong implications for the egalitarian social assumptions imbedded in the initial queue culture based sociology of waiting. Policy implications support the present pay for use philosophy increasingly applied in the transition from public to private management of space. Originality/value -The self-policing "fairness" of the waiting line is now open to scrutiny given the proliferation of the newly shaped distributional logics imbedded in the management, design and use of waiting spaces.

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Virtual queuing at airport security lanes

Cited by 56 publications

References 17 publications

An overview of population-based algorithms for multi-objective optimisation

An overview of population-based algorithms for multi-objective optimisation

Understanding People Flow in Transportation Hubs

Re-thinking queue culture: the commodification of thick time

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