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arXiv · 1810.05753

Relative compression of trajectories

Nieves R. Brisaboa·Travis Gagie·Adrián Gómez-Brandón·Gonzalo Navarro·José R. Paramá
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Abstract

We present RCT, a new compact data structure to represent trajectories of objects. It is based on a relative compression technique called Relative Lempel-Ziv (RLZ), which compresses sequences by applying an LZ77 encoding with respect to an artificial reference. Combined with $O(z)$-sized data structures on the sequence of phrases that allows to solve trajectory and spatio-temporal queries efficiently. We plan that RCT improves in compression and time performance the previous compressed representations in the state of the art.

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Nieves R. Brisaboa, Travis Gagie, Adrián Gómez-Brandón, Gonzalo Navarro, José R. Paramá. 2018-10-12. Relative compression of trajectories. https://arxiv.org/abs/1810.05753

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