Documents disponibles écrits par cet auteur

Buying from the babbling retailer? / Gad Allon in Management science, Vol. 57 N° 4 (Avril 2011) 

Public ISBD [article]  in Management science > Vol. 57 N° 4 (Avril 2011) . - pp. 713-726 Titre : Buying from the babbling retailer? : The impact of availability information on customer behavior Type de document : texte imprimé Auteurs : Gad Allon, Auteur ; Achal Bassamboo, Auteur Année de publication : 2011 Article en page(s) : pp. 713-726 Note générale : Management Langues : Anglais (eng) Mots-clés : Inventory  Cheap  talk  Revenue  management Index. décimale : 658 Organisation des entreprises. Techniques du commerce Résumé : Provision of real-time information by a firm to its customers has become prevalent in recent years in both the service and retail sectors. In this paper, we study a retail operations model where customers are strategic in both their actions and in the way they interpret information, whereas the retailer is strategic in the way it provides information. This paper focuses on the ability (or the lack thereof) to communicate unverifiable information and influence customers' actions. We develop a game-theoretic framework to study this type of communication and discuss the equilibrium language emerging between the retailer and its customers. We show that for a single retailer and homogeneous customer population setting, the equilibrium language that emerges carries no information. In this sense, a single retailer providing information on its own cannot create any credibility with the customers. We study how the results are impacted due to the heterogeneity of the customers. We provide conditions under which the firm may be able to influence the customer behavior. In particular, we show that the customers' willingness to pay and willingness to wait cannot be ranked in an opposite manner. However, even when the firm can influence each customer class separately, the effective demand is not impacted. DEWEY : 658 ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/cgi/content/abstract/57/4/713 [article] Buying from the babbling retailer? : The impact of availability information on customer behavior [texte imprimé] / Gad Allon, Auteur ; Achal Bassamboo, Auteur . - 2011 . - pp. 713-726. Management Langues : Anglais (eng) in Management science > Vol. 57 N° 4 (Avril 2011) . - pp. 713-726 Mots-clés : Inventory  Cheap  talk  Revenue  management Index. décimale : 658 Organisation des entreprises. Techniques du commerce Résumé : Provision of real-time information by a firm to its customers has become prevalent in recent years in both the service and retail sectors. In this paper, we study a retail operations model where customers are strategic in both their actions and in the way they interpret information, whereas the retailer is strategic in the way it provides information. This paper focuses on the ability (or the lack thereof) to communicate unverifiable information and influence customers' actions. We develop a game-theoretic framework to study this type of communication and discuss the equilibrium language emerging between the retailer and its customers. We show that for a single retailer and homogeneous customer population setting, the equilibrium language that emerges carries no information. In this sense, a single retailer providing information on its own cannot create any credibility with the customers. We study how the results are impacted due to the heterogeneity of the customers. We provide conditions under which the firm may be able to influence the customer behavior. In particular, we show that the customers' willingness to pay and willingness to wait cannot be ranked in an opposite manner. However, even when the firm can influence each customer class separately, the effective demand is not impacted. DEWEY : 658 ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/cgi/content/abstract/57/4/713

Capacity sizing under parameter uncertainty / Achal Bassamboo in Management science, Vol. 56 N° 10 (Octobre 2010) 

Public ISBD [article]  in Management science > Vol. 56 N° 10 (Octobre 2010) . - pp. 1668-1686 Titre : Capacity sizing under parameter uncertainty : Safety staffing principles revisited Type de document : texte imprimé Auteurs : Achal Bassamboo, Auteur ; Ramandeep S. Randhawa, Auteur ; Assaf Zeevi, Auteur Année de publication : 2010 Article en page(s) : pp. 1668-1686 Note générale : Management Langues : Anglais (eng) Mots-clés : Service  systems  Capacity  sizing  Parameter  uncertainty Index. décimale : 658 Organisation des entreprises. Techniques du commerce Résumé : We study a capacity sizing problem in a service system that is modeled as a single-class queue with multiple servers and where customers may renege while waiting for service. A salient feature of the model is that the mean arrival rate of work is random (in practice this is a typical consequence of forecasting errors). The paper elucidates the impact of uncertainty on the nature of capacity prescriptions, and relates these to well established rules-of-thumb such as the square-root safety staffing principle. We establish a simple and intuitive relationship between the incoming load (measured in Erlangs) and the extent of uncertainty in arrival rates (measured via the coefficient of variation) that characterizes the extent to which uncertainty dominates stochastic variability or vice versa. In the former case it is shown that traditional square-root safety staffing logic is no longer valid, yet simple capacity prescriptions derived via a suitable newsvendor problem are surprisingly accurate. DEWEY : 658 ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/cgi/content/abstract/56/10/1668 [article] Capacity sizing under parameter uncertainty : Safety staffing principles revisited [texte imprimé] / Achal Bassamboo, Auteur ; Ramandeep S. Randhawa, Auteur ; Assaf Zeevi, Auteur . - 2010 . - pp. 1668-1686. Management Langues : Anglais (eng) in Management science > Vol. 56 N° 10 (Octobre 2010) . - pp. 1668-1686 Mots-clés : Service  systems  Capacity  sizing  Parameter  uncertainty Index. décimale : 658 Organisation des entreprises. Techniques du commerce Résumé : We study a capacity sizing problem in a service system that is modeled as a single-class queue with multiple servers and where customers may renege while waiting for service. A salient feature of the model is that the mean arrival rate of work is random (in practice this is a typical consequence of forecasting errors). The paper elucidates the impact of uncertainty on the nature of capacity prescriptions, and relates these to well established rules-of-thumb such as the square-root safety staffing principle. We establish a simple and intuitive relationship between the incoming load (measured in Erlangs) and the extent of uncertainty in arrival rates (measured via the coefficient of variation) that characterizes the extent to which uncertainty dominates stochastic variability or vice versa. In the former case it is shown that traditional square-root safety staffing logic is no longer valid, yet simple capacity prescriptions derived via a suitable newsvendor problem are surprisingly accurate. DEWEY : 658 ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/cgi/content/abstract/56/10/1668

Large-scale service marketplaces / Gad Allon in Management science, Vol. 58 N° 10 (Octobre 2012) 

Public ISBD [article]  in Management science > Vol. 58 N° 10 (Octobre 2012) . - pp. 1854-1872 Titre : Large-scale service marketplaces : The role of the moderating firm Type de document : texte imprimé Auteurs : Gad Allon, Auteur ; Achal Bassamboo, Auteur ; Eren B. Çil, Auteur Année de publication : 2012 Article en page(s) : pp. 1854-1872 Note générale : Management Langues : Anglais (eng) Mots-clés : Service  operations  Fluid  models  Asymptotic  analysis  Large  games  Noncooperative  game  theory Résumé : Recently, large-scale, Web-based service marketplaces, where many small service providers compete among themselves in catering to customers with diverse needs, have emerged. Customers who frequent these marketplaces seek quick resolutions and thus are usually willing to trade prices with waiting times. The main goal of this paper is to discuss the role of the moderating firm in facilitating information gathering, operational efficiency, and communication among agents in service marketplaces. Surprisingly, we show that operational efficiency may be detrimental to the overall efficiency of the marketplace. Furthermore, we establish that to reap the “expected” gains of operational efficiency, the moderating firm may need to complement the operational efficiency by enabling communication among its agents. The study emphasizes the scale of such marketplaces and the impact it has on the outcomes. ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/content/58/10/1854.abstract [article] Large-scale service marketplaces : The role of the moderating firm [texte imprimé] / Gad Allon, Auteur ; Achal Bassamboo, Auteur ; Eren B. Çil, Auteur . - 2012 . - pp. 1854-1872. Management Langues : Anglais (eng) in Management science > Vol. 58 N° 10 (Octobre 2012) . - pp. 1854-1872 Mots-clés : Service  operations  Fluid  models  Asymptotic  analysis  Large  games  Noncooperative  game  theory Résumé : Recently, large-scale, Web-based service marketplaces, where many small service providers compete among themselves in catering to customers with diverse needs, have emerged. Customers who frequent these marketplaces seek quick resolutions and thus are usually willing to trade prices with waiting times. The main goal of this paper is to discuss the role of the moderating firm in facilitating information gathering, operational efficiency, and communication among agents in service marketplaces. Surprisingly, we show that operational efficiency may be detrimental to the overall efficiency of the marketplace. Furthermore, we establish that to reap the “expected” gains of operational efficiency, the moderating firm may need to complement the operational efficiency by enabling communication among its agents. The study emphasizes the scale of such marketplaces and the impact it has on the outcomes. ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/content/58/10/1854.abstract

Optimal flexibility configurations in newsvendor networks / Achal Bassamboo in Management science, Vol. 56 N° 8 (Août 2010) 

Public ISBD [article]  in Management science > Vol. 56 N° 8 (Août 2010) . - pp. 1285-1303 Titre : Optimal flexibility configurations in newsvendor networks : Going beyond chaining and pairing Type de document : texte imprimé Auteurs : Achal Bassamboo, Auteur ; Ramandeep S. Randhawa, Auteur ; Jan A. Van Mieghem, Auteur Année de publication : 2010 Article en page(s) : pp. 1285-1303 Note générale : Management Langues : Anglais (eng) Mots-clés : Inventory  production  Stochastic  models  Programming  Linear  Applications  Queues  Networks  Flexibility  Newsvendor  networks Index. décimale : 658 Organisation des entreprises. Techniques du commerce Résumé : We study the classical problem of capacity and flexible technology selection with a newsvendor network model of resource portfolio investment. The resources differ by their level of flexibility, where “level-k flexibility” refers to the ability to process k different product types. We present an exact set-theoretic methodology to analyze newsvendor networks with multiple products and parallel resources. This simple approach is sufficiently powerful to prove that (i) flexibility exhibits decreasing returns and (ii) the optimal portfolio will invest in at most two, adjacent levels of flexibility in symmetric systems, and to characterize (iii) the optimal flexibility configuration for asymmetric systems as well. The optimal flexibility configuration can serve as a theoretical performance benchmark for other configurations suggested in the literature. For example, although chaining is not optimal in our setting, the gap is small and the inclusion of scale economies quickly favors chaining over pairing. We also demonstrate how this methodology can be applied to other settings such as product substitution and queuing systems with parameter uncertainty. DEWEY : 658 ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/content/56/8.toc [article] Optimal flexibility configurations in newsvendor networks : Going beyond chaining and pairing [texte imprimé] / Achal Bassamboo, Auteur ; Ramandeep S. Randhawa, Auteur ; Jan A. Van Mieghem, Auteur . - 2010 . - pp. 1285-1303. Management Langues : Anglais (eng) in Management science > Vol. 56 N° 8 (Août 2010) . - pp. 1285-1303 Mots-clés : Inventory  production  Stochastic  models  Programming  Linear  Applications  Queues  Networks  Flexibility  Newsvendor  networks Index. décimale : 658 Organisation des entreprises. Techniques du commerce Résumé : We study the classical problem of capacity and flexible technology selection with a newsvendor network model of resource portfolio investment. The resources differ by their level of flexibility, where “level-k flexibility” refers to the ability to process k different product types. We present an exact set-theoretic methodology to analyze newsvendor networks with multiple products and parallel resources. This simple approach is sufficiently powerful to prove that (i) flexibility exhibits decreasing returns and (ii) the optimal portfolio will invest in at most two, adjacent levels of flexibility in symmetric systems, and to characterize (iii) the optimal flexibility configuration for asymmetric systems as well. The optimal flexibility configuration can serve as a theoretical performance benchmark for other configurations suggested in the literature. For example, although chaining is not optimal in our setting, the gap is small and the inclusion of scale economies quickly favors chaining over pairing. We also demonstrate how this methodology can be applied to other settings such as product substitution and queuing systems with parameter uncertainty. DEWEY : 658 ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/content/56/8.toc