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Corpora release 2.6

We are pleased to announce release 2.6 of our corpora! Some exciting new things:

  • Expanded Coptic Old Testament
  • More gold-standard treebanked texts
  • Updated files of Shenoute’s Abraham Our Father and Acephalous Work 22
  • New metadata fields to indicate whether documents have been machine annotated or if an editor has reviewed the machine annotations

Expanded Coptic Old Testament

Our Coptic Old Testament corpus is updated and expanded, with digital text from the our partners at the Digital Edition of the Coptic Old Testament project in Goettingen.  All annotations in this corpora are fully machine-processed (no human editing, because it’s BIG). You can read through all the text in two different visualizations online and search it in the ANNIS database:

  1. analytic: the normalized text segmented into words aligned with part of speech tags; each verse is aligned with Brenton’s English translation of the Septuagint
  2. chapter: the normalized text presented as chapters and verses; each word links to the online Coptic dictionary
  3. ANNIS search: full search of text, lemmas, parts of speech, syntactic annotations, etc. (see our ANNIS tips if you’re new to ANNIS)

Please keep in mind this corpus is fully machine-annotated, and we currently do not have the capacity to make manual changes to a corpus of this size.  If you notice systemic errors (the same thing tagged incorrectly often, for example) please let us know.  Otherwise, please be patient: as the tools improve, we will update this corpus.

We’ve also machine-aligned the text with Brenton’s English translation of the Septuagint. It’s possible there will be some misalignments.  Thanks for your understanding!

Treebanks

We’ve added more documents to our separate gold-standard treebank corpus.  (Want to learn more about treebanks?) In this corpus, the treebank/syntactic annotations have been manually corrected; the documents are part of the Universal Dependencies project for cross-language linguistics research.  New treebanked documents include selections from 1 Corinthians, the Gospel of Mark, Shenoute’s Abraham Our Father, Shenoute’s Acephalous Work 22, and the Martyrdom of Victor.  This means the self-standing treebank corpus is expanded, and any documents we’ve treebanked have updated word segmentation, part of speech tagging, etc., in their regular corpora.

Updated Shenoute Documents

Documents in the corpora for Shenoute’s Abraham Our Father and Acephalous Work 22 have several updates.

First, some documents are in our treebank corpus and are now significantly more accurate in terms of word segmentation, tagging, etc.

Second, we’ve added chapter and verse segmentation to these works.  Since there are no comprehensive print editions of these works with versification, we’ve applied our own chapter and verse numbers.  We recognize that versification is arbitrary, but nonetheless useful for citation.  For texts transcribed from manuscripts, chapter divisions typically occur when an ekthesis occurs in the manuscript. (Ekthesis describes a letter hanging in the margin.)  They do not necessarily occur with each ekthesis (if ekthesis is very frequent), but we try to make the divisions occur only with ekthesis.  Verses typically equal one sentence, sometimes more than one sentence per verse for very short sentences or more than one verse per sentence for very long Shenoutean sentences.

Third, we’ve added “Order” metadata to make it easier to read a work in order if it’s broken into multiple documents.  Check out Abraham Our Father, for example: the first document in the list is the beginning of the work.

Screen shot of list of documents in Abraham Our Father Corpus

Screen shot of list of documents in Abraham Our Father Corpus

When you’re reading through a document, click on “Next” to get the next document in reading order.  (If there are multiple manuscript witnesses to a work, we’ll send you to the next document in order with the fewest lacunae, or missing segments.)

Screen shot of beginning of Abraham Our Father

Screen shot of beginning of Abraham Our Father

Of course, you can always click on documents in any order you want to read however you like!

And everything is fully searchable across all documents in ANNIS.

New Metadata Fields Documenting Annotation

We sometimes get asked: which corpora do scholars annotate and which corpora are machine-annotated?  The answer is complicated — almost everything is machine annotated, with different levels of scholarly review.  So we’re adding three new metadata fields to help show users what kinds of annotation each document get:

  • Segmentation refers to word segmentation (or “tokenization”) performed by the tokenizer tool.
  • Tagging refers to part of speech, language of origin, and lemma tagging performed by our tagger
  • Parsing refers to dependency syntax annotations (which are part of our treebanking)

Each of these fields contains one of the following values:

  • automatic: fully machine annotated; no manual review or corrections to the tool output
  • checked: the tool has annotated the text, and a scholar has reviewed the annotations before publication
  • gold: the tools have been run and the annotations have received thorough review; this value usually applies only to documents that have been treebanked by a scholar (requiring rigorous review of word segmentation and tagging along the way)

For example, in the first image of document metadata visible in ANNIS, the document has automatic parsing; a scholar has checked the word segmentation and tagging.

 

Screenshot of document metadata showing checked word segmentation and tagging

Screenshot of document metadata showing checked word segmentation and tagging

In the next image of document metadata, a scholar has treebanked the text, making segmentation, tagging, and parsing all gold.

Screenshot of document metadata showing gold level annotations

Screenshot of document metadata showing gold level annotations

 

We are rolling out these annotations with each new corpus and newly edited corpus; not every corpus has them, yet — only the ones in this release.  Our New Testament and Old Testament corpora are machine-annotated (automatic) in all annotations.

 

We hope you enjoy!

 

Rebecca Krawiec Featured Digital Humanities Researcher at Canisius

Rebecca Krawiec presenting in the Canisius College Digital Humanities speaker series

Rebecca Krawiec presenting in the Canisius College Digital Humanities speaker series

Project participant Rebecca Krawiec, Professor and Chair of Religious Studies and Theology at Canisius College, presented her work with Coptic Scriptorium as part of the Digital Humanities speaker series at Canisius. Her talk, “Studying Ancient Egyptian Christianity in a Modern Digital World,” discussed how the many layers of annotation in Coptic Scriptorium’s corpora enhance research into late antique Christianity.  Read a description of this event on the Canisius College website or watch the lecture online.

Recent presentations by Coptic Scriptorium team members (post 1 of 2)!

This fall, Coptic Scriptorium team members have presented their work in a number of environments.

Research Talk, Georgetown University Linguistics Speaker Series

In September, as part of the Georgetown University Department of Linguistics Friday Speaker Series, the project presented a summary of our latest work and our goals for the new NEH Digital Humanities Advancement Grant we received. “A Linked Digital Environment for Coptic Studies”.  Caroline T. Schroeder provided an overview of the project. Amir Zeldes presented the technology required to machine-process Coptic text in order to produce an annotated, digital corpus and linked online lexicon. Rebecca Krawiec discussed the research potential of an annotated digital corpus for research in early monasticism. Elizabeth Platte introduced the concept of linked data and demonstrated our linked geographic data features. (Christine Luckritz Marquis was scheduled present research on space and place in monastic literature but was unfortunately sidelined by a hurricane.)

Rebecca Krawiec, Elizabeth Platte, Amir Zeldes, Caroline T. Schroeder at Georgetown University, 2018

Rebecca Krawiec, Elizabeth Platte, Amir Zeldes, Caroline T. Schroeder at Georgetown University, 2018

Material of Christian Apocrypha Conference

In December, Caroline T. Schroeder gave a paper at the Material of Christian Apocrypha Conference hosted at the University of Virginia, under the auspices of the North American Society for the Study of Christian Apocryphal Literature.  Dr. Schroeder’s paper, “The Materiality of Digital Apocryphal Studies,” addressed the role of digital humanities in studying the colonial history of manuscripts, people and places in early Christian literature, and public humanities.  It was part of a panel on Christian Apocrypha and the Digital Humanities, which also included papers by James Walters (Rochester College) on “The Digital Syriac Corpus: A New Resource for the Study of Syriac Texts” and  Brandon Hawk (Rhode Island College) on “The Medieval Social Network of the Gospel of Pseudo-Matthew”.  Datasets used in the presentation are available at Dr. Schroeder’s GitHub site.

Caroline T. Schroeder presenting about the manuscripts digitized by Coptic Scriptorium

Caroline T. Schroeder presenting about the manuscripts digitized by Coptic Scriptorium

Caroline T. Schroeder presenting visualizations of occurrences of proper names in some of Coptic Scriptorium's corpora

Caroline T. Schroeder presenting visualizations of occurrences of proper names in some of Coptic Scriptorium’s corpora

New features in our NLP pipeline

Coptic Scriptorium’s Natural Language Processing (NLP) tools now support two new features:

  • Multiword expression recognition
  • Detokenization (bound group re-merging)

Kicking off work on the new phase of our project, these new tools will improve inter-operability of Coptic data across corpora, lexical resources and projects:

Multiword expressions

The multiword expression ⲉⲃⲟⲗ ϩⲛ "out of" (from Apophthegmata Patrum 27, MOBG EG 67. Image: Österreichische Nationalbibliothek)

The multiword expression ⲉⲃⲟⲗ ϩⲛ “out of” (from Apophthegmata Patrum 27, MOBG EG 67. Image: Österreichische Nationalbibliothek)

Although lemmatization and normalization already offer a good way of finding base forms of Coptic words, many complex expressions cross word borders in Coptic. For example, although it is possible to understand combinations such as ⲉⲃⲟⲗ ‘out’ + ϩⲛ ‘in’, or ⲥⲱⲧⲙ ‘hear’ + ⲛⲥⲁ ‘behind’ approximately from the meaning of each word, together they have special senses, such as ‘out of’ and ‘obey’ respectively.  This and similar combinations are distinct enough from their constituents that they receive different lexicon entries in dictionaries, for example in the Coptic Dictionary Online (CDO), compare: ⲥⲱⲧⲙ, ⲛⲥⲁ and ⲥⲱⲧⲙ ⲛⲥⲁ.

Thanks to the availability of the CDO’s data,  the NLP tools can now attempt to detect known multiword expressions, which can then be linked back to the dictionary and used to collect frequencies for complex items. 

Many thanks to Maxim Kupreyev for his help in setting up multiword expressions in the dictionary, as well as to Frank Feder, So Miyagawa, Sebastian Richter and other KELLIA collaborators for making these lexical resources available!

Detokenization

Coptic bound groups have been written with intervening spaces according to a number of similar but subtly different traditions, such as Walter Till’s system and the system employed by Bentley Layton’s  Coptic Grammar, which Coptic Scriptorium employs. The differences between these and other segmentation traditions can create some problems:

  1. Users searching in multiple corpora may be surprised when queries behave differently due to segmentation differences.
  2. Machine learning tools trained on one standard degrade in performance when the data they analyze uses a different standard.

In order to address these issues and have more consistent and more accurately analyzed data, we have added a component to our tools which can attempt to merge bound groups into ‘Laytonian’ bound groups. In Computational Linguistics, re-segmenting a segmented text is referred to as ‘detokenization’, but for our tools this has also been affectionately termed ‘Laytonization’. The new detokenizer has several options to choose from:

  1. No merging – this is the behavior of our tools to date, no modifications are undertaken.
  2. Conservative merging mode – in conservative merging, only items known to be spelled apart in different segmentations are merged. For example, in the sequence ϩⲙ ⲡⲏⲓ “in the-house”, the word ϩⲙ “in” is typically spelled apart in Till’s system, but together in Layton’s. This type of sequence would be merged in conservative mode.
  3. Aggressive merging mode – in this mode, anything that is most often spelled bound in our training data is merged. This is done even if the segment being bound by the system is not not one that would normally be spelled apart in some other conventional system. For example, the sequence ⲁ ϥⲥⲱⲧⲙ “(PAST) he heard”, the past tense marker is a unit that no Coptic orthographic convention spells apart. It is relatively unlikely that it should stand apart in normal Coptic text in any convention, so in aggressive mode it would be merged as well.
  4. Segment at merge point – regardless of the merging mode chosen, if any merging occurs, this option enforces the presence of a morphological boundary at any merge point. This ensures that merged items are always assigned to separate underlying words, and receive part of speech annotations accordingly, even if our machine learning segmenter does not predict that the merged bound group should be segmented in this way.

The use of these options is expected to correspond more or less to the type of input text: for carefully edited text from a different convention (e.g. Till), conservative merging is with segmentation at merge points is recommended. For ‘messier’ text (e.g. older digitized editions with varying conventions, such as editions by Wallis Bugde, or material from automatic Optical Character Recognition), aggressive merging is advised, and we may not necessarily want to assume that segments should be introduced at merge points.

We hope these tools will be useful and expect to see them create more consistency, higher accuracy and inter-operability between resources in the near future!

Coptic Scriptorium wins DHAG grant from the NEH

NEH Logo MASTER_082010

copticlogoenglishlogo

We are very pleased to report that the National Endowment for the Humanities just announced their approval of a new Stage III Digital Humanities Advancement Grant continuing their long-standing support of our work in Coptic Scriptorium. The new grant is titled:

A Linked Digital Environment for Coptic Studies: Integrating Heterogeneous Data with Machine Learning and Natural Language Processing

The focus of the grant, which is set to run from fall 2018 for three years, is developing more robust tools which can deliver high accuracy analyses with less manual intervention in the face of more heterogeneous data, including Coptic materials from OCR, spelling variation across editions and varying scholarly conventions. This will allow us to grow the collection of corpora made available over the project’s tools in the coming months and years. Additional areas of work include improving our work on Linked Open Data standards connecting the project to other initiatives in the field, and pioneering methods for automatic Named Entity Recognition in Coptic, among other things!

Please stay tuned for more updates on the new project – in the meantime we thank the NEH for their trust in us, our project members, contributors and advisory board for all their work, and the Digital Coptic community for your support!

Coptic SCRIPTORIUM at the UCLA-St Shenouda Coptic Studies Conference

Coptic SCRIPTORIUM’s Carrie Schroeder presented a paper on our project’s latest work at the nineteenth annual UCLA-St. Shenouda Society Coptic Studies Conference.  As usual, the conference showcased papers from a diverse set of presenters, with scholarship on early monasticism all the way to modern Coptic architecture.  We thank Hany Takla, President of the Society and longtime friend of the project, for the opportunity to attend.

2018 UCLA-St Shenouda conference

Presenters and attendees of the 19th annual UCLA-St. Shenouda Society Coptic Studies Conference

Coptic Scriptorium’s summer adventures

This has been a summer of writing, annotating, and conferencing!

German PI Dr. Prof. Heike Behlmer and US PI Caroline T. Schroeder.

German PI Dr. Prof. Heike Behlmer and US PI Caroline T. Schroeder at Schroeder’s recent visit to the Coptic Old Testament Project at the University and the Goettingen Academy.

We are winding up our collaborative grant with our German partners (Coptic Old Testament Project, the Thesaurus Linguae Aegyptiae, the DDGLC, and the INTF).  Our German and US PI’s met in Göttingen, Germany, earlier this summer.   We’re working on writing our final reports and exchanging data and technologies.  We’re hoping to publish more annotated texts later this year.

We also have had a series of conference papers, including a paper on one of our collaboration’s proudest achievements, the online Coptic Dictionary.  Here are some of the lectures and conference presentations this summer:

Miyagawa, So and Zeldes, Amir (2018) “A Semantic Map of the Coptic Complementizer če Based on Corpus Analysis: Grammaticalization and Areal Typology in Africa,” International Workshop on Semantic maps: Where do we stand and where are we going? Liège, Belgium. June.

Schroeder, Caroline T. (2018) “A Homily is a Homily is a Homily is a Corpus:  Digital Approaches to Shenoute,” The Transmission of Early Christian Homilies from Late Antiquity to the Middle Ages Conference, Goethe-Universität Frankfurt am Main. June.

Schroeder, Caroline T. (2018) “Coptic Studies in the Digital Age,” Department of Ancient History, Macquarie University. July.

Schroeder, Caroline T. (2018) “Coptic Studies in a Digital Age,” UCLA-St. Shenouda Foundation Coptic Studies Conference, Los Angeles. July.

Feder, Frank,Maxim Kupreyev, Emma Manning, Caroline T. Schroeder, Amir Zeldes. “A Linked Coptic Dictionary Online”. Proceedings of LaTeCH 2018 – The 11th SIGHUM Workshop at COLING2018. Santa Fe, NM. August. [paper online]

As always, thanks to all our contributors, collaborators, and board members for their insight and labor.

New paper about the Coptic Dictionary Online

Coptic Dictionary Online

A new paper about the Coptic Dictionary Online will be presented at this year’s ACL SIGHUM workshop on Language Technology for Cultural Heritage. This work is a collaboration between the Akademie der Wissenschaften zu Göttingen, Berlin-Brandenburgische Akademie der Wissenschaften, and Coptic Scriptorium.

The paper presents the structure and underlying principles of the dictionary and its Web interface, and also gives a quantitative analysis of the dictionary’s coverage of Coptic lexical material in corpus data. You can check out the pre-print here:

Feder, Frank, Kupreyev, Maxim, Manning, Emma, Schroeder, Caroline T. and Zeldes, Amir (2018) “A Linked Coptic Dictionary Online”. Proceedings of LaTeCH 2018 – The 11th SIGHUM Workshop at COLING2018. Santa Fe, NM.

[paper]

Automatically parsed OT and NT corpora

We are pleased to announce that a new version of the automatically annotated New Testament and Old Testament corpora is now available online in Coptic Scriptorium!

The new version has substantially better automatic segmentation accuracy, and, for the first time, automatic syntactic parses for each verse. For more information on the syntax annotations, please see our previous post here:

https://blog.copticscriptorium.org/2018/05/07/coptic-treebank-2-2-moving-us-to-better-parsing/

Here are some example queries to get you started:

Thanks as always to the NEH and DFG for their support and to everyone who made the texts available, which come from the Sahidica version of the NT ((c) J. Warren Wells) and the OT text contributed by  the CrossWire Bible Society SWORD Project, thanks to work by Christian Askeland, Matthias Schulz and Troy Griffitts.

Coptic Treebank 2.2 – moving us to better parsing!

With the data release of Universal Dependencies 2.2, an update to the Coptic Treebank is now online! Thanks to work by Mitchell Abrams and Liz Davidson we’ve been able to add the first three chapters from 1 Corinthians and make numerous corrections. Another three chapters of 1 Corinthians and a portion of the Martyrdom of Victor the General are coming soon. You can see how we’ve been annotating and the documentation of our guidelines here:

http://universaldependencies.org/cop/

Thanks to the new data, automatic parsing has become somewhat more reliable, allowing us to add automatic parses to the most recent release. The results are better than before, but note we still only expect around 90% accuracy. To illustrate where the computer can’t do what humans can, here are two examples of a verb governing a subordinate verb in a clause marked by Ϫⲉ ‘that’. The subordinate verb usually has one of two labels:

  • ccomp if it’s a complement clause (I said that…)
  • advcl if it’s an adverbial clause, such as a causal clause (Ϫⲉ  meaning ‘because’).

One of these examples was done by a human who got things right, the other contains a parser error – see if you can spot which is which!

 

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