Tidied up sentiment script.

sentiment/download_prepare.sh

 #!/bin/bash
-# file: prepare_data.sh
-#
-# Program: Downloads and prepares data containing the sentiment dataset.
-#
-# Author: Thomas Huetter
 
-# create target folder and change into it
-mkdir sentiment
-cd sentiment
+# The MIT License (MIT)
+# Copyright (c) 2017 Thomas Hütter, Mateusz Pawlik.
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
 
-# download the data files
+# Download the data files.
 wget https://nlp.stanford.edu/sentiment/trainDevTestTrees_PTB.zip
 
-# unzip the data into folder original_data
-unzip trainDevTestTrees_PTB.zip
+# Extract the data into subdirectory.
+unzip trainDevTestTrees_PTB.zip -d original_data
 
-# remove zip file
-rm -rf trainDevTestTrees_PTB.zip
+# Prepare output from 'dev.txt' and 'train.txt':
+# - convert dev.txt and train.txt into UTF-8 format
+# - replace ( by {
+# - replace ) by }
+# - remove whitespace before '{'
+# - sort by number of nodes (equivalent to number of "{")
+iconv -f ISO-8859-1 -t "UTF-8" original_data/trees/dev.txt original_data/trees/train.txt | \
+sed -e 's/(/{/g' | sed -e 's/)/}/g' | sed -E 's/[[:space:]]([{])/\1/g' | \
+awk '{print gsub("{","{"), $0}' | sort -n  | cut -d' ' -f2- > sentiment_sorted.bracket
 
-# change to unzipped folder
-cd trees
-
-# prepare data for file L.trees
+# Tidy up.
+rm trainDevTestTrees_PTB.zip
+rm -rf original_data
\ No newline at end of file
-# convert dev.txt and train.txt into UTF-8 format |  replace ( by {  |   replace ) by } |   remove whitespace before '{'   | sort by number of nodes (equivalent to number of "{")
-iconv -f ISO-8859-1 -t "UTF-8" dev.txt train.txt  | sed -e 's/(/{/g' | sed -e 's/)/}/g' | sed -E 's/[[:space:]]([{])/\1/g' | awk '{print gsub("{","{"), $0}' | sort -n  | cut -d' ' -f2- > ../sentiment_sorted.bracket
-
-# go back to the folder
-cd ..