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@inproceedings{1412003,
author = {Jensen, Peter G. and Larsen, Kim G. and Srba, Jiří},
address = {Holland},
booktitle = {Proceedings of the 14th International Colloquium on Theoretical Aspects of Computing (ICTAC'17)},
doi = {http://dx.doi.org/10.1007/978-3-319-67729-3_15},
keywords = {data structure; set; prefix sharing; model checking},
howpublished = {tištěná verze "print"},
language = {eng},
location = {Holland},
isbn = {978-3-319-67728-6},
pages = {248-265},
publisher = {Springer},
title = {PTrie: Data Structure for Compressing and Storing Sets via Prefix Sharing},
year = {2017}
}
TY - JOUR
ID - 1412003
AU - Jensen, Peter G. - Larsen, Kim G. - Srba, Jiří
PY - 2017
TI - PTrie: Data Structure for Compressing and Storing Sets via Prefix Sharing
PB - Springer
CY - Holland
SN - 9783319677286
KW - data structure
KW - set
KW - prefix sharing
KW - model checking
N2 - Sets and their efficient implementation are fundamental in all of computer science, including model checking, where sets are used as the basic data structure for storing (encodings of) states during a state-space exploration. In the quest for fast and memory efficient methods for manipulating large sets, we present a novel data structure called PTrie for storing sets of binary strings of arbitrary length. The PTrie data structure distinguishes itself by compressing the stored elements while sharing the desirable key characteristics with conventional hash-based implementations, namely fast insertion and lookup operations. We provide the theoretical foundation of PTries, prove the correctness of their operations and conduct empirical studies analysing the performance of PTries for dealing with randomly generated binary strings as well as for state-space exploration of a large collection of Petri net models from the 2016 edition of the Model Checking Contest (MCC'16). We experimentally document that with a modest overhead in running time, a truly significant space-reduction can be achieved. Lastly, we provide an efficient implementation of the PTrie data structure under the GPL version 3 license, so that the technology is made available for memory-intensive applications such as model-checking tools.
ER -
JENSEN, Peter G., Kim G. LARSEN a Jiří SRBA. PTrie: Data Structure for Compressing and Storing Sets via Prefix Sharing. In \textit{Proceedings of the 14th International Colloquium on Theoretical Aspects of Computing (ICTAC'17)}. Holland: Springer, 2017, s.~248-265. ISBN~978-3-319-67728-6. Dostupné z: https://dx.doi.org/10.1007/978-3-319-67729-3\_{}15.
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