Web 2.0 and Mashups for SDI

PRESENTATIONon

Presented byManisha Thapa (28)

Shangharsha Thapa (29)Manoj Shah (32)

InchargeShashish Maharjan

LecturerDepartment of Civil and Geomatics Engineering

Kathmandu University

5th Dec, 20141

What is ?The term ‘Web 2.0’ is commonly

associatedwith web applications that facilitate

interactive information sharing, interoperability and user- centred

design. 2

Web 2.0 is the term used to describe a variety of web sites and applications that allow anyone to create and share online information or material they have created.A key element of the technology is that it allows people to create, share, collaborate & communicate.

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There are number of different types of web 2.0 applications including wikis, blogs, social networking etc. Many of the most popular websites are Web 2.0 sites such as Wikipedia, YouTube, Facebook, Flickr and many more.

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What is

??

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The term ‘Mashup’ originally comes from music. A mashup is a web application that uses content from

more than one source to create a single new service displayed in a single graphical interface.

A web page or application that combines data from two or more external online sources.

Mashup uses data from external sources to retrieve the contents to create a new innovative services.

For instance we can take an example where the map information is from Google Map, the weather information is from NOAA.com(weather services) and so on.

Information about Mashups

“The map user has now become the map creator.”- Fraser Taylor,Geomatics and Cartographic Research Centre at Carleton

University6

The most popular mashups is the different types of map mashup

such as:

Most popular mashups

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Mashups supporting research

Source: “Mashing up SDI: An NMA’s perspectives “ by Peter Ter Haar, Director of Products Ordnance Survey 8

SDI

A set of institutional, technical and economical arrangements to enhance the availability (access and use) for correct, up to date, fit for purpose and integrated geo-information, timely and at an affordable price as well as to support decision making process related to countries sustainable development.

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Mashup and SDI on a

continuumMashups

User generated content

Wisdom of crowds De facto standards

(concerning fact) No guarantee of

accuracy

SDI Authoritative data Wisdom of experts De jure standards

(concerning laws) Guarantee of certain

level of accuracy

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Better way to take advantage of local

knowledge Improvements in data collection and update Users as data producers

What can SDI learn from Mashups?

But data quality control and security matters

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SDI’s will need useful, engaging and intuitive

applications both for the professional and the public.

Community participation in SDIs Knowing when local public knowledge is bestBut…Greatest challenges about:• Security and privacy• Accessibility and control of resources• Usage and copyrights

Mashing up SDIs

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SDIs as Mashups

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Contd…

Source: Mashing up SDI: An NMA’s perspectives by Peter Ter Haar, Director of Products Ordnance Survey

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Web 2.0 and Mashups can be regarded as the necessity

for SDI but these ingredients definitely add fragrances to SDI if privacy, rights management, reliability and provenance are properly addressed before using them.

Through the successful use of web 2.0 and Mashups, we can build SDI with higher citizen acceptance and interest as well as public participation.

Public participation for sharing, collaborating the data will reduce the work load for SDI, but there should be a mechanism for the validation of the work done by them.

Is web 2.0 and mashups a necessity for SDI?

Web 2.0 and Mashups have enabled the success of SDI’s 15

Conclusion

• Respect copyright and rights management terms. Not all data sources available via an API or XML data stream can be remixed, and it’s critical that copyright and the uses allowed by the copyright holder be respected.

• Major considerations when thinking about creating or using a mashup for SDI, is the provenance and authority of the mashup resource. The casual viewer often cannot easily discern who provided what piece of data in a mashup, making it difficult to assess credibility and authority. As a result of which, the metadata cannot be well prepared by SDI; hence troubling in data navigation.

Hence, we should march forward towards the use of web 2.0 and Mashups in a systematic and scientific way for SDI. Since SDI is for the sake of people. Without public support, SDI lives no longer. And the use of web 2.0 and Mashups in SDI is the only way to bring participation of people in order to make SDI live longer.

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References

Maguire, David J., and Paul A. Longley. "The emergence of geoportals and their role in spatial data infrastructures." Computers, environment and urban systems 29.1 (2005): 3-14.Rinner, Claus, Carsten Keßler, and Stephen Andrulis. "The use of Web 2.0 concepts to support deliberation in spatial decision making." Computers, Environment and Urban Systems 32.5 (2008): 386-395.Murugesan, San. "Understanding Web 2.0." IT professional 9.4 (2007): 34-41.Andersen, Per. What is Web 2.0?: ideas, technologies and implications for education. Vol. 1. No. 1. Bristol, UK: JISC, 2007.Batty, Michael, et al. "Map mashups, Web 2.0 and the GIS revolution." Annals of GIS 16.1 (2010): 1-13.Tuchinda, Rattapoom, Pedro Szekely, and Craig A. Knoblock. "Building mashups by example." Proceedings of the 13th international conference on Intelligent user interfaces. ACM, 2008.

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