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# Towards a Complete Classification of Tractability in Allen's Algebra

@inproceedings{Drakengren1997TowardsAC, title={Towards a Complete Classification of Tractability in Allen's Algebra}, author={Thomas Drakengren and Peter Jonsson}, booktitle={IJCAI}, year={1997} }

- Published 1997 in IJCAI

We characterise the set of subalgebras of Allen's algebra which have a tractable satisfiability problem, and in addit ion contain certain basic relations. The conclusion is that no tractable subalgebra that is not known in the l i terature can contain more than the three basic relations This means that concerning algebras for specifying complete knowledge about temporal informa t ion, there is no hope of finding yet unknown classes w i th much expressivity. Furthermore, we show that there are… CONTINUE READING