This work uses the L-system to construct a tree structure for the text sequence and derives its complexity. It serves as a measure of structural complexity of the text. It is applied to anomaly detection in data transmission.
@article{arxiv.1307.0339,
title = {Syntactic sensitive complexity for symbol-free sequence},
author = {Cheng-Yuan Liou and Bo-Shiang Huang and Daw-Ran Liou and Alex A. Simak},
journal= {arXiv preprint arXiv:1307.0339},
year = {2013}
}