77 lines
1.3 KiB
Plaintext
77 lines
1.3 KiB
Plaintext
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<%@include file="includes/setup.md.rsp"%>
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<%@string fcnname="logSumExp"%>
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<% fcnname <- "<%@string name="fcnname"%>" %>
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<%@meta title="${fcnname}() benchmarks"%>
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<%@meta author="Henrik Bengtsson"%>
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<%@meta date="2014-11-01"%>
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<%@include file="${header}"%>
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# <%@meta name="title"%>
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This report benchmark the performance of <%=fcnname%>() against alternative methods.
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## Alternative methods
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* logSumExp_R()
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where
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```r
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<%=withCapture({
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logSumExp_R <- function(lx, ...) {
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iMax <- which.max(lx)
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log1p(sum(exp(lx[-iMax] - lx[iMax]))) + lx[iMax]
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} # logSumExp_R()
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})%>
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```
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## Data
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```r
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<%=withCapture({
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<%@include file="R/random-vectors.R"%>
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data <- rvectors(mode = "double")
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data <- data[1:4]
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})%>
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```
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## Results
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<% for (ii in seq_along(data)) { %>
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<%
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dataLabel <- names(data)[ii]
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message(dataLabel)
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x <- data[[dataLabel]]
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gc()
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%>
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### <%=dataLabel%> vector
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```r
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<%=withCapture({
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x <- data[[.dataLabel.]]
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gc()
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stats <- microbenchmark(
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"logSumExp" = logSumExp(x),
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"logSumExp_R" = logSumExp_R(x),
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unit = "ms"
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)
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})%>
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```
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<% benchmarkResults(stats, tags=dataLabel) %>
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<% } # for (ii ...) %>
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<%@include file="${footer}"%>
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<%---------------------------------------------------------------------------
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HISTORY:
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2014-11-01
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o Created.
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---------------------------------------------------------------------------%>
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