Let L be some class of standard latency functions. Let I = (G = (V,A), (la)a=A,...
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Let L be some class of standard latency functions. Let I = (G = (V,A), (la)a=A, (Si, ti)iɛ[k], (ri)iċ[k]) be a selfish routing instance with latency functions (la)a€A € Lª. Define al as the instance that we obtain from I if we scale all demands by a ≥ 1, i.e., al = (G, (la)a=A, (Si,ti)i≤[k], (αri)i=[k]). Recall the definition of w(L) as defined in the Lecture Notes and assume that 0 ≤ w(L) < 1. Let f be a Nash flow of I and let f* be an optimal flow of al with a := (1 + w(L)). Show that C(f) <C(f*). Hint: Consider the flow x = 1f* and use the variational inequality. Let L be some class of standard latency functions. Let I = (G = (V,A), (la)a=A, (Si, ti)iɛ[k], (ri)iċ[k]) be a selfish routing instance with latency functions (la)a€A € Lª. Define al as the instance that we obtain from I if we scale all demands by a ≥ 1, i.e., al = (G, (la)a=A, (Si,ti)i≤[k], (αri)i=[k]). Recall the definition of w(L) as defined in the Lecture Notes and assume that 0 ≤ w(L) < 1. Let f be a Nash flow of I and let f* be an optimal flow of al with a := (1 + w(L)). Show that C(f) <C(f*). Hint: Consider the flow x = 1f* and use the variational inequality.
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Related Book For
Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
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