search for: xyza

Displaying 4 results from an estimated 4 matches for "xyza".

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2010 Nov 17
2
Bug in agrep computing edit distance?
...;,"lazy",max=list(sub=0)) which makes sense, but agrep("lasy","lazybc",max=1) agrep("lasy","lazybc",max=0.001) agrep("lasy","layt",max=list(all=1)) and agrep("x",c("x","xy","xyz","xyza"),max=list(insertions=2)) agrep("x",c("x","xy","xyz","xyza"),max=list(deletions=2)) agrep("x",c("x","xy","xyz","xyza"),max=list(all=2)) all give "1 2 3 4" ?? this makes it clear...
2005 May 01
3
win32-dir 0.1.0 compile problems
I tried to download/compile/install win32-dir, but I couldn''t get it to go. Over a private email Daniel Berger had me... "Curious. What platform are you on exactly? Try modifying the extconf.rb file. Add ''have_library("SHFolder")'' above ''have_library("shell32")''. If that doesn''t work, try uncommenting the other
2010 Nov 16
1
Bug in agrep computing edit distance?
The documentation for agrep says it uses the Levenshtein edit distance, but it seems to get this wrong in certain cases when there is a combination of deletions and substitutions. For example: > agrep("abcd", "abcxyz", max.distance=1) [1] 1 That should've been a no-match. The edit distance between those strings is 3 (1 substitution, 2 deletions), but agrep matches
2008 Mar 13
1
R Finance
Hi, I am an R novice working with financial data. I am developing a portfolio strategy evaluation technique to back-test the performance of our screens; checking how the screened stock would've performed over the period in question. I am using quantmod in R to download the historical data from yahoo and then analyzing it using PerformanceAnalytics. My problem is that, as our screens are done