On the hardness of the minimum height decision tree problem
نویسندگان
چکیده
Given a set of objects O and a set of tests T , the abstract decision tree problem (DTP) is to construct a tree with minimum height that completely identi3es the objects of O, by using the tests of T . No algorithm with a good approximation ratio is known to solve this problem. We give a theoretical support for this fact by showing that DTP does not admit an o(log n)-approximation algorithm unless P = NP. c © 2004 Elsevier B.V. All rights reserved.
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ورودعنوان ژورنال:
- Discrete Applied Mathematics
دوره 144 شماره
صفحات -
تاریخ انتشار 2004