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SQ: Stata module for sequence analysis

Author

Listed:
  • Ulrich Kohler

    () (University of Potsdam)

  • Magdalena Luniak
  • Christian Brzinsky-Fay

Abstract

The term sq refers to sequence data and to the commands for analyzing these data. Sequences are entities build by a limited number of elements that are ordered in a specific way. A typical example is the human DNA, where the "Elements" Adenin, Cytosin, Guanin and Thymin (the "organic Bases") are ordered into a sequence. Other sequences are songs, that are build by tones that appear in a specific order, or careers of employers that are build by specific job-positions and ordered along time. Sequence data are data that contains one variable holding the elements, one variable that contain the position of each elements within this sequence, and one variable that identifies the sequences itself. Hence, sequence data requires data that are set up in what Stata usually calls the "long form". This version is updated from that published in Stata Journal, 2006, 6:4.

Suggested Citation

  • Ulrich Kohler & Magdalena Luniak & Christian Brzinsky-Fay, 2006. "SQ: Stata module for sequence analysis," Statistical Software Components S456755, Boston College Department of Economics, revised 17 Nov 2016.
  • Handle: RePEc:boc:bocode:s456755
    Note: This module should be installed from within Stata by typing "ssc install sq". Windows users should not attempt to download these files with a web browser.
    as

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    File URL: http://fmwww.bc.edu/repec/bocode/s/sq.sthlp
    File Function: help file
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    File URL: http://fmwww.bc.edu/repec/bocode/_/_gsqallpos.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/_/_gsqelemcount.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/_/_gsqfirstpos.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/l/lsq.mata
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    File URL: http://fmwww.bc.edu/repec/bocode/l/lsq.mlib
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    File URL: http://fmwww.bc.edu/repec/bocode/y/youthemp.dta
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