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Contents

Introduction

The Icelandic Parsed Historical Corpus (IcePaHC) is a project that has built 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. For historical texts spelling is modernized for phonological change.

Download Version 0.9, (LGPL)

To get access to the current 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. If you use Windows, we provide an easy-to-use setup file that installs the corpus and a graphical user interface which can be started from your desktop. Since this is an early preview version you can expect to find some uncorrected mistakes. Please let us know about those so they can be corrected before our next release.

Version 0.9 - Current release

The current release is version 0.9 of 1,002,390 words total from every century between the 12th and the 21st centuries inclusive. All of the text for version 1.0 is already included but some minor corrections remain to be finished.

Version 0.5

Version 0.4

Version 0.3

Version 0.2

Version 0.1

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

If you use Windows, the easiest way to get started is to download IcePaHC for Windows (download above) and follow the on-screen instructions. IcePaHC for Windows uses CorpusSearch to run queries, so read CorpusSearch documentation in addition to this web page. If you use IcePaHC for Windows you do not have to type in commands to start the program, you simply click the IcePaHC icon on your Desktop. If you do not have Java installed, which is required, the installation will direct you to a Java download page.

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 0.9

Total number of words: 1,002,390

Directories included in Version 0.9

Note that each token in a given .psd file corresponds to a single line in the .txt file, so for example, the token with ID number ""361"" will appear on line 361 in the corresponding .txt file.

Citation for the Version 0.9 release (of August 26th 2011)

Wallenberg, Joel, Anton Karl Ingason, Einar Freyr Sigurðsson and Eiríkur Rögnvaldsson. 2011. 
Icelandic Parsed Historical Corpus (IcePaHC). 
Version 0.9. http://www.linguist.is/icelandic_treebank

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