Search over the past Web is available

The Portuguese Web Archive released a service that enables search and access to web contents that are no longer available online.

Portuguese Web Archive

This beta version of the service includes 130 million contents of the Portuguese web archived between 1996 and 2007.

It enables advanced search options, such as, date range restrictions.

Please send us your comments and critiques. They are most welcome.

Search the past now!

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2005 contents provided by the National Library can now be searched

The contents provided by the National Library of Portugal were successfully integrated and can be searched through our experimental search system.

In 2005 the National Library of Portugal in collaboration with INESC conducted a series of web crawls to gather information related to the national elections.

This project was named RECOLHA and the data collected comprised over 14 million contents (165 GB).

In 2009 these data was supplied to the Portuguese Web Archive.

It was successfully integrated and now it can be searched through our experimental search system.

Notice, that searches are performed over all the archived data, independently from their origin, so you will not be able to identify the RECOLHA contents.

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Scientific study about Web accessibility conducted in collaboration with the Archive

This research, conducted by the HCIM group from the University of Lisbon in collaboration with the Portuguese Web Archive, presents a measurement of the Portuguese Web accessibility for people with disabilities.

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Scientific study presents a characterization of the information needs of Web Archive users

This research focuses on what the users intents are and which topics are most interesting to them. Three instruments were used to collect quantitative and qualitative data: search logs, an online questionnaire and a laboratory study.

The paper Understanding the Information Needs of Web Archive Users, by Miguel Costa and Mário J. Silva, was presented at the 10th International Web Archiving Workshop, in Vienna, Austria.

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Web archivists: please answer 3 quick questions regarding resources committed to web archiving

We are conducting a preliminary study regarding the efforts being committed world-wide to web archiving.

If you are a web archivist, please send us your answers to these 3 quick questions:

  • What is the name of your web archive initiative (please state if you want to remain anonymous)?
  • Which is the amount of data that you have archived (number of files, disk space occupied)?
  • How many people work at your web archive (in person/month)?

Any additional comments are welcome.

Thank you very much.

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Characterizing Search Behavior in Web Archives: we have published a video about a study we performed

Talk about the search behavior characterization of web archive users, based on a scientific study performed by the Portuguese Web Archive.

The presentation focuses on the following points:

  • Web archiving
  • Search log analysis
  • How do users search?
  • Time dimension in searches

Find out more:

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Paper was considered one of the best at CIWAI-2008

The paper about the archive and measurement of the Portuguese web was considered one of the best of the CIWAI-2008 conference.

The paper Arquivo e medição da web portuguesa (in Portuguese) about the archive and measurement of the Portuguese web was considered one of the best of the CIWAI-2008 conference.

This recognition was given to 3 of the 66 published works. The conference received 216 submissions.

The paper presents the Portuguese web archive project and a characterization of the Portuguese web obtained from a crawl performed in February 2008.

According to the obtained results the Portuguese web is composed at least by 56 million contents which correspond to 2.8 TB of data.

The authors were invited to publish an extended version of the paper in a scientific journal.

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