The ALICE High-Level Trigger processes data online, to either select interesting (sub-) events, or to compress data efficiently by modeling techniques. Focusing on the main data source, the Time Projection Chamber, the architecure of the system and the current state of the tracking and compression methods are outlined.
@article{arxiv.physics/0403063,
title = {Real-time TPC Analysis with the ALICE High-Level Trigger},
author = {V. Lindenstruth and C. Loizides and D. Roehrich and B. Skaali and T. Steinbeck and R. Stock and H. Tilsner and K. Ullaland and A. Vestbo and T. Vik},
journal= {arXiv preprint arXiv:physics/0403063},
year = {2009}
}