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Introduction

The Icelandic Parsed Historical Corpus (IcePaHC) is a project that aims to construct a diachronic corpus with samples of written Icelandic from all periods from the 12th century to modern times. The corpus is mostly compatible with the corpora of historical English developed at UPenn.

Download Version 0.1, Preview (LGPL)

To get access to the 0.1 preview version of the Icelandic Parsed Historical Corpus (IcePaHC) you can download the following zip-file, which contains the raw data of the corpus in labeled bracketing format. Since this is early preview

• Icelandic Parsed Historical Corpus (IcePaHC). Version 0.1. LGPL. (zip, X KB, Y words in Z trees)

The corpus, as well as software developed as part of the IcePaHC project, is released under an (LGPL) license, to ensure compatibility with other LGPL-licensed NLP tools, notably the IceNLP toolkit, which is used extensively in the development of the corpus.

The corpus is free as in beer and as in speech and there is no registration wall. We recommend that people cite the latest released version when using the corpus for research to ensure that results can be replicated. However, the most up-to-date version and information on the current state of development can be accessed at our version control repository at Github.

Getting started using the corpus

Since the corpus uses the labeled bracketing format it is compatible with programs that assume such annotation. We recommend using the CorpusSearch program developed by Beth Randall at UPenn. If you have copied the corpus to the directory "/home/chomsky/icepahc" and saved the CorpusSearch jar file in "/home/chomsky/corpussearch", you can give a command like the following to search the corpus using a query in a text file named datsubj.q.

java -classpath /home/chomsky/corpussearch/CS_2.002.75.jar csearch/CorpusSearch datsubj.q /home/chomsky/icepahc/*.psd

Let us assume that datsubj.q is a query that picks out all dative subjects. The file could look like the following:

node: IP*

query: (IP* idoms NP-SBJ) AND (NP-SBJ idoms *-D)

If you run the command above using a file like that, CorpusSearch will return a file called datsubj.out with all sentences in the corpus that contain dative subjects. Read the CorpusSearch documentation and the annotation guidelines for the corpus to find out how to do more.

Note that there will be ways to simplify the commands by creating aliases etc. but this will work differently on different operating systems. Read the getting started with CorpusSearch documentation for more information.

Texts included in Version 0.1

• X words from The First Grammatical Treatise (entire text) (12th century)
• Y words from Íslensk hómilíubok (Icelandic book of homilies) (12th century)
• Z words from Piltur og stúlka (novel by Jón Thoroddsen) (19th century)

Citation for the version 0.1 preview release (of July 1st 2010)

Wallenberg, Joel, Anton Karl Ingason, Einar Freyr Sigurðsson and Eiríkur Rögnvaldsson. 2010. 
Icelandic Parsed Historical Corpus (IcePaHC). 
Version 0.1. http://www.linguist.is/wiki

Treebank team

• Eiríkur Rögnvaldsson (PI)
• Joel Wallenberg (PI)
• Anton Karl Ingason
• Einar Freyr Sigurðsson
• Brynhildur Stefánsdóttir (BA research assistant)
• Hulda Óladóttir (BA research assistant)