Lucene example source code file (compare.shingle.benchmark.tables.pl)

This example Lucene source code file (compare.shingle.benchmark.tables.pl) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Lucene tags/keywords

argv, argv, java, license, license, max, patched, shingle, size, the, unigrams, unigrams, unpatched, unpatched

The Lucene compare.shingle.benchmark.tables.pl source code

#!/usr/bin/perl
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
# 
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# ------------------------------------------
# compare.shingle.benchmark.jira.tables.pl
#
# Takes as cmdline parameters two JIRA-formatted benchmark results, as produced
# by shingle.bm2jira.pl (located in the same directory as this script), and
# outputs a third JIRA-formatted comparison table.
#
# The difference is calculated as a percentage:
#
#   100 * (unpatched-elapsed - patched-elapsed / patched-elapsed)
#
# where (un)patched-elapsed values have had the no-shingle-filter 
# (StandardAnalyzer) elapsed time subtracted from them.
#
#
# Example shingle.bm2jira.pl output:
# ----------------------------------
# JAVA:
# java version "1.5.0_15"
# Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_15-b04)
# Java HotSpot(TM) 64-Bit Server VM (build 1.5.0_15-b04, mixed mode)
#
# OS:
# cygwin
# WinVistaService Pack 2
# Service Pack 26060022202561
#
# ||Max Shingle Size||Unigrams?||Elapsed||
# |1 (Unigrams)|yes|2.19s|
# |2|no|4.74s|
# |2|yes|4.90s|
# |4|no|5.82s|
# |4|yes|5.97s|

use strict;
use warnings;

my $usage = "Usage: $0 <unpatched-file> \n";

die $usage unless ($#ARGV == 1 && -f $ARGV[0] && -f $ARGV[1]);

my %stats = ();

open UNPATCHED, "<$ARGV[0]" || die "ERROR opening '$ARGV[0]': $!";
my $table_encountered = 0;
my $standard_analyzer_elapsed = 0;
my %unpatched_stats = ();
my %patched_stats = ();
while (<UNPATCHED>) {
  unless ($table_encountered) {
    if (/\Q||Max Shingle Size||Unigrams?||Elapsed||\E/) {
      $table_encountered = 1;
    } else {
      print;
    }
  } elsif (/\|([^|]+)\|([^|]+)\|([\d.]+)s\|/) {
    my $max_shingle_size = $1;
    my $output_unigrams = $2;
    my $elapsed = $3;
    if ($max_shingle_size =~ /Unigrams/) {
      $standard_analyzer_elapsed = $elapsed;
    } else {
      $unpatched_stats{$max_shingle_size}{$output_unigrams} = $elapsed;
    }
  }
}
close UNPATCHED;

open PATCHED, "<$ARGV[1]" || die "ERROR opening '$ARGV[1]': $!";
while (<PATCHED>) {
  if (/\|([^|]+)\|([^|]+)\|([\d.]+)s\|/) {
    my $max_shingle_size = $1;
    my $output_unigrams = $2;
    my $elapsed = $3;
    if ($max_shingle_size =~ /Unigrams/) {
      $standard_analyzer_elapsed = $elapsed
         if ($elapsed < $standard_analyzer_elapsed);
    } else {
      $patched_stats{$max_shingle_size}{$output_unigrams} = $elapsed;
    }
  }
}
close PATCHED;

print "||Max Shingle Size||Unigrams?||Unpatched||Patched||StandardAnalyzer||Improvement||\n";
for my $max_shingle_size (sort { $a <=> $b } keys %unpatched_stats) {
  for my $output_unigrams (sort keys %{$unpatched_stats{$max_shingle_size}}) {
    my $improvement 
      = ( $unpatched_stats{$max_shingle_size}{$output_unigrams}
        - $patched_stats{$max_shingle_size}{$output_unigrams})
      / ( $patched_stats{$max_shingle_size}{$output_unigrams}
        - $standard_analyzer_elapsed);
    $improvement = int($improvement * 1000 + .5) / 10; # Round and truncate
    printf "|$max_shingle_size|$output_unigrams"
          ."|$unpatched_stats{$max_shingle_size}{$output_unigrams}s"
          ."|$patched_stats{$max_shingle_size}{$output_unigrams}s"
          ."|${standard_analyzer_elapsed}s|%2.1f%%|\n", $improvement;
  }
}