Liwa : News

LiWA Project listed on ePractice.eu

2010-07-06T04:49:16Z

LiWA technologies first release

2010-06-14T10:45:58Z

They are now pleased to announce the release in open-source of several components, as part of the “liwa-technologies” project on Google code: http://code.google.com/p/liwa-technologies/.

You are all welcome to download and try out the plug-in dedicated to the streaming video content, the Rich Media Capture module:
http://code.google.com/p/liwa-technologies/source/browse/rich-media-capture
http://code.google.com/p/liwa-technologies/downloads/detail?name=rich-media-capture-plugin-1.0.jar

This is still an experimental version of the software, therefore your feedback and comments will be greatly appreciated, helping us to improve the documentation and the usability of the module.
More LiWA tools will be available soon, please stay tuned for the next releases.

Using Word Sense Discrimination on Historic Document Collections

2010-04-20T04:45:39Z

The paper entitled “Using Word Sense Discrimination on Historic Document Collections” by Nina Tahmasebi, Kai Niklas, Thomas Theuerkauf and Thomas Risse has been accepted in the 10th ACM/IEEE Joint Conference on Digital Libraries. The paper evaluates word sense discrimination on historic document collections to investigate if word senses can be found automatically using modern technology applied on historic data. The paper also investigates which impact OCR errors, present in scanned historic documents, have on finding word senses in an automatic way. Finding word senses in an automatic way is the first step towards detecting terminology evolution and hence an important step in our research. Nina Tahmasebi will present the paper on June 22nd, 2010 at JCDL which is held in conjunction with ICADL in Surfers Paradise (Gold Coast, Australia).

Update on LiWA Project to GI Working Group

2010-04-15T08:51:04Z

Thomas Risse presented the members of the GI Working Group on Digital Libraries during their bi-annual meeting on Tuesday, 14.4.2010 an update on the activities and results of the LiWA project.

IWAW Proceedings online

2009-11-13T07:03:09Z

Around 40 participants attended IWAW2009, which took place on Sep. 30 / Oct. 1 2009, in conjunction with ECDL in Corfu (Greece). The workshop provided a comprehensive overview on active research and practice on the preservation of the Web. This year’s workshop also addressed several new approaches and research (from virtual worlds preservation to temporal dimension of Web Archives) as well as practical issues addressed by Archiving institutions, specifically with respect to managing the storage of large volumes of digital material. In this context, a special Session was devoted to the WARC storage format, which has been accepted as a new ISO standard (ISO 28500:2009), as well as emerging tool support to handle these container objects. In general, scalability issues and managing large-volume crawls were topics of intensive discussions, based on the increasing body of experience available in numerous institutions by now, running a series of Web archiving activities in a range of different configurations.

Talk about “Turning pure Web Page Storages into Living Web Archives” at Cultural Heritage on line

2009-10-20T11:09:55Z

Web content plays an increasingly important role in the knowledge-based society, and the preservation and long-term accessibility of Web history has high value (e.g., for scholarly studies, market analyses, intellectual property disputes, etc.). There is strongly growing interest in its preservation by libraries and archival organizations as well as emerging industrial services. Web content characteristics (high dynamics, volatility, contributor and format variety) make adequate Web archiving a challenge.
LiWA will look beyond the pure �freezing� of Web content snapshots for a long time, transforming pure snapshot storage into a �Living� Web Archive. In order to create Living Web Archives, the LiWA project will address R&D challenges in the three areas: Archive Fidelity, Archive coherence and Archive interpretability. The results of the project will be demonstrated within two application scenarios namely �Streaming Archive� and �Social Web Archive�. The Streaming Archive application will showcase the building of an audio-visual Web archive and how audio and video broadcast related web information can be preserved. The Social Web application will demonstrate how web archives can capture the dynamics and the different types of user interaction of the social web.

LiWA Second Newsletter published

2009-07-02T14:01:06Z

For this second Newsletter, focus has been given on Streaming and Social Web applications.
Learn more by reading the presentation of the LiWA partners involved in the development of each application.

Talk “From Web page storages to Living Web Archive” at London

2009-06-17T10:39:43Z

The paper on “From Web page storages to Living Web Archive” will be presented by Dr. Thomas Risse, at the JISC, the DPC and the UK Web Archiving Consortium Workshop which will take place at The British Library Conference Centre in London, on July 21st.

Bridging the Terminology Gap in Web Archive Search

2009-06-08T06:20:45Z

The paper entitled ’Bridging the Terminology Gap in Web Archive Search’ by Klaus Berberich, Srikanta Bedathur, Mauro Sozio, and Gerhard Weikum has been accepted in the 12th International Workshop on the Web and Databases (WebDB 2009). The paper proposes a method to find query reformulations that paraphrase users’ information needs using past terminology. Such query reformulations are key to retrieving old but highly relevant documents in web archives that were written using now outdated terminology. Klaus Berberich will present the paper on June 28th, 2009 at WebDB 2009, which is held in conjunction with SIGMOD 2009 in Providence (Rhode Island, USA).

SHARC: Framework for Quality-Conscious Web Archiving

2009-05-29T09:52:54Z

The paper on quality-conscious web archiving by Dimitar Denev, Arturas Mazeika, Marc Spaniol, and Gerhard Weikum has been accepted for presentation to the 35th International Conference on Very Large Data Bases (VLDB 2009). The conference takes place on 24-28 August in Lyon, France. The paper presents the SHARC framework for assessing the data quality in Web archives and for tuning capturing strategies towards better quality with given resources. The paper defines quality measures, characterise their properties, and derives a suite of quality-conscious scheduling strategies for archive crawling.

LiWA Poster at the CHORUS Conference in Brussels

2009-05-18T10:06:13Z

Talk “Terminology Evolution in Web Archiving” at Vienna

2009-04-20T12:39:54Z

Due to the central role that the World Wide Web plays in nearly all areas
of today’s life, adequate Web archiving has become a cultural necessity in

preserving knowledge. The next generation web archiving technologies will
overcome limitations in content capture, preservation, analysis and
enrichment. One important aspect is the archive interpretability. The
correspondence between the terminology used for querying and the one used
in content objects to be retrieved is a crucial prerequisite for effective

content access based on retrieval technology. However, as terminology is
evolving over time, a growing gap opens up between older documents in
(long-term) archives and the active language used for querying such
archives. Thus, technologies for detecting and systematically handling
terminology evolution are required to ensure ``semantic’’ accessibility of

(Web) archive content on the long run. As a starting point for dealing
with terminology evolution present the problem and discusses issues,
approaches and relevant technologies.

Talk “Data Quality in Web Archiving”

2009-04-16T12:16:28Z

The paper on “Data Quality in Web Archiving” by Marc Spaniol, Dimitar Denev, Arturas Mazeika, Pierre Senellart and Gerhard Weikum will be presented at the 3rd Workshop on Information Credibility on the Web (WICOW 2009). The Workshop and paper presentation takes places on April 20 at Madrid, Spain and is organized in conjunction with the 18th International World Wide Web Conference (WWW 2009). The paper addresses the problems of capturing a large Web site that may span hours or even days, which increases the risk that contents collected so far are incoherent with the parts that are still to be crawled. The paper introduces a model for identifying coherent sections of an archive and, thus, measuring the data quality in Web archiving. Additionally, a crawling strategy is introduced that aims to ensure archive coherence by minimizing the diffusion of Web site captures.

Talk “Building on Internet Memory” at Grenoble Xerox Research Centre Europe (XRCE)

2009-03-17T15:57:33Z

Lecture “Web Archiving” at Stuttgart Media University (HdM) on March 17, 2009

2009-02-20T08:32:51Z

On March 17, 2009 Dr. Marc Spaniol from Max-Planck-Institute for Computer Science has presented ongoing research taking place within the LiWA project to students and scientists of Stuttgart Media University (HdM). During the 90 minutes lecture, Dr. Spaniol introduced the main issues in Web archiving and present examples of Web spam as well as temporal coherence ensuring crawling strategies to the audience. The lecture was part of an elective course on “Creation of an E-learning Module for Web Archiving” in the scope of the Library and Information Management program. This course is organized by Prof. Markus Hennies and Prof. Heidrun Wiesenm�ller M.A.. The lecture is open to public and takes place at 14.15 on March 17 at HdM’s site in Wolframstra�e. Guests interested in Web archiving and/or LiWA (in particular) are welcome.