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4.5.3. workflow

From a given corpus or record set, the basic workflow for the REKn Crawler is as follows:

  1. Extract keywords from every document in a given corpus. For the prototype, we used a large MARC file from Iter as our record set and used PHP-MARC, an open source software package built in PHP that allows for manipulation and extraction of MARC records.
  2. Build search strings from the keywords extracted earlier. The following combinations were used in our experimentation: author; author and title; title; author and subject; subject.
  3. Query the web using each constructed search string. Up to fifty web page results per search are then collected and stored in a site list. Search engines that follow the OpenSearch standard can be queried from the back-end of a software application—the REKn Crawler employs this technique. OpenSearch-compatible search engines provide access to a variety of materials.
  4. Send a crawler into the web to harvest web pages from the site list generated in step 3. We are currently exploring implementation strategies for this stage of the project. Nutch is currently the best candidate because it is an open source web-search software package that builds on Lucene Java.

Consider the following example. A user views a document in PReE; for instance, Edelgard E. Dubruck, “Changes of Taste and Audience Expectation in Fifteenth-Century Religious Drama.” DuBruck (1983). Viewing this document triggers the crawler, which begins crawling via the document’s Iter MARC record (record number, keywords, author, title, subject headings). Search strings are then generated from the Iter MARC record data (in this particular instance the search strings will include: DuBruck, Edelgard E.; DuBruck, Edelgard E. Changes of Taste and Audience Expectation in Fifteenth-Century Religious Drama; DuBruck, Edelgard E. Religious drama, French; DuBruck, Edelgard E. Religious drama, French, History and criticism; Changes of Taste and Audience Expectation in Fifteenth-Century Religious Drama; Religious drama, French; Religious drama, French, History and criticism). The Crawler conducts searches with these strings and stores them for the later process of weeding out erroneous returns.

In the example given above, which took under an hour, the Crawler generated 291 unique results to add to the knowledgebase relating to the article and its subject matter. In our current development environment, the Crawler is able to harvest approximately 35,000 unique web pages in a day. We are currently experimenting with a larger seed set of 10,000 MARC records, which still amounts to a 1% subset of Iter’s bibliographical data.

4.5.4. application

The use of the REKn Crawler in conjunction with both REKn and PReE suggests some interesting applications, such as: increasing the scope and size of the knowledgebase; being able to analyze the results of the Crawler’s harvesting to discover document metadata and document ontology; and harvesting blogs and wikis for community knowledge on any given topic, and well beyond.

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Online humanities scholarship: the shape of things to come. OpenStax CNX. May 08, 2010 Download for free at http://cnx.org/content/col11199/1.1
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