@techreport{TR-IC-05-29,
  number = {IC-05-29},
  author = {C. Baudet and Z. Dias},
  title = {Analysis of slipped sequences in {EST}s {P}rojects},
  month = {November},
  year = {2005}, 
  institution = {Institute of Computing, University of Campinas},
  note = {In English, 13 pages.
    \par\selectlanguage{english}\textbf{Abstract}
       Slippage is an important sequencing problem that can occur in
       EST projects. However, there are very few studies about it. In
       this work we propose three new methods to detect slippage
       artifacts: Arithmetic Mean Method, Geometric Mean Method, and
       Echo Coverage Method. Each method is simple and has two
       different strategies for processing sequences: suffix and
       subsequence. Using the 291689 EST sequences produced in the
       SUCEST project, we performed comparative tests between the
       proposed methods and Telles and Silva Method. The subsequence
       strategy is better than the suffix strategy because it is not
       anchored at the end of the sequence, so it is more flexible to
       find slippage at the beginning of the EST. Comparing with the
       Telles and Silva Method, the advantage of our methods is that
       they do not discard the majority of the sequences marked as
       slippage, but, instead of it, only remove the slipped artifact
       from the sequence. The tests indicate that the Echo Coverage
       Method with subsequence strategy has the best compromise
       between slippage detection and calibration easiness.
  }
}