CMSC 858F: Algorithmic Lower Bounds: Fun with Hardness Proofs Fall 2014 Fixed Parameter Algorithms and Lower Bounds for parameterized Problems
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چکیده
Unless P = NP we have to satisfy ourselves with any two out of the three goals. Most of the early undergrad algorithms like matching, shortest path etc. are exact and fast. To tackle hard problems and obtain a fast solution we use approximation algorithms, PTAS etc. FPT or fixed parameter tractable algorithms come to our rescue when we need to tackle hard problems yet obtain an optimal solution. The idea behind fixed-parameter tractability is to take an
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