On the competitiveness of the move-to-front rule

نویسندگان

  • Conrado Martínez
  • Salvador Roura
چکیده

We consider the list access problem and show that one questionable assumption in the original cost model presented by Sleator and Tarjan 13] and subsequent literature allowed for several competitiveness results of the move-to-front rule (MTF). We present an oo-line algorithm for the list access problem and prove that, under a more realistic cost model, no on-line algorithm can be c-competitive for any constant c, MTF included.

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عنوان ژورنال:
  • Theor. Comput. Sci.

دوره 242  شماره 

صفحات  -

تاریخ انتشار 2000