دانلود رایگان مقاله انگلیسی در ثبات انتخاب تامین کننده مشارکتی - الزویر 2018

عنوان فارسی
در ثبات انتخاب تامین کننده مشارکتی
عنوان انگلیسی
On stability of collaborative supplier selection
صفحات مقاله فارسی
0
صفحات مقاله انگلیسی
4
سال انتشار
2018
نشریه
الزویر - Elsevier
فرمت مقاله انگلیسی
PDF
نوع مقاله
ISI
نوع نگارش
Short communication
رفرنس
دارد
پایگاه
اسکوپوس
کد محصول
E9891
رشته های مرتبط با این مقاله
مهندسی صنایع
گرایش های مرتبط با این مقاله
لجستیک و زنجیره تامین
مجله
اسناد تحقیقات در عملیات - Operations Research Letters
دانشگاه
School of Industrial Engineering - Eindhoven University of Technology - The Netherlands
کلمات کلیدی
نظریه بازی، مدیریت زنجیره تامین، خرید، اشتراک گذاری سود
doi یا شناسه دیجیتال
https://doi.org/10.1016/j.orl.2018.08.002
چکیده

abstract


This note discusses the possibility of fair gain sharing in cooperative situations where players optimally partition themselves across a number of alternative channels. An example is group purchasing among a set of buyers facing with a range of suppliers. We introduce channel selection games as a new class of cooperative games and give a representation of their cores. With two channels (suppliers), the game has a non-empty core if the gain functions across every individual channel is supermodular.

نتیجه گیری

Channel selection games


Suppose a non-empty finite set of channels M exists to select from. For a channel j ∈ M, let wj : 2 N → R+ be channel j’s gain function which gives the non-negative and finite gain obtained by every coalition of players that select channel j such that wj(∅) = 0. With the interpretation of channels as suppliers, a gain function specifies per coalition the cost savings from joint purchasing if all players in the coalition buy via this channel. A channel selection situation is (N, M, (wj)j∈M ) with its elements being defined previously. For every S ⊆ N, let (Tj)j∈M be a partition of S over the channels. That is, for every j, k ∈ M we have Tj ∩ Tk = ∅ and ⋃ j∈M Tj = S. Let S the set of all such partitions. The characteristic function of the channel selection game (N, v) assigns to each coalition S ⊆ N the value: v(S) = max (Tj )j∈M ∈S ∑ j∈M wj(Tj). Let (T S j )j∈M be an optimal partition of S over the channels. If all wj are supermodular functions, it is known that the optimization problem above for |M| = 2 is solvable in polynomial time [7], but for |M| ≥ 3 the optimization problem becomes NPhard [2]. Nevertheless, if all gain functions are supermodular then there would be economies of scale in cooperation and the characteristic function of the associated cooperative channel selection game would at least be superadditive.


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