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      <a href="articles/PeakSegPDPA.html">PeakSegOptimal::PeakSegPDPA(), a log-linear time algorithm for constrained changepoint detection</a>
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      <a href="articles/PELT_and_SegNeigh.html">PELT and SegNeigh algorithms for changepoint::cpt.mean()</a>
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      <a href="articles/substring_and_gregexpr.html">Quadratic to linear transition for substring() and gregexpr()</a>
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