Mobile Semantic ApplicationsDo we really need them?

Timofey Ermilov

Outline

Introduction

Problems

How to deal with them

Conclusions

IntroductionWhy “mobile” matters?

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5.3 billion mobile subscribers

That’s 77% of the world population!

90% of the world now lives in a place with access to a mobile network.

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High-speed mobile internet

Almost one in five global mobile subscribers have access to fast mobile Internet (3G or better)

Widespread availability of unlimited data plans

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1/3 global internet users are mobile-only

They do not, or very rarely use a desktop, laptop or event tablet to access the Web.

Still think “mobile” doesn’t count?

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DevicesWhat about hardware?

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Smartphones to feature phones

Mobile Devices

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The first Smartphone in 2003

The feature phone in 2009

Birth of new mobile phones generation

Mobile Devices

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The first iPhone in 2007

The first music phone in 2008

The smartphone in 2010

Mobile Devices

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Problems, officer?Everything looks awesome, where’s your challenges?

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Just a few..

Screen resolutions

What?!

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South Korea USA Guatemala0

2

4

6

8

10

12

14

16

Speed (Mbps)

Fast here, slow there

Internet connection

There is a lot of devices

Fragmentation

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Surely more than two

Fragmentation

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And even more than that!

Fragmentation

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Mobile world is changing rapidly

Q1 2010

Android iOSBlackBerry OS

Windows Mobile

Palm OS LinuxSymbian

Q1 2011

AndroidiOSBlackBerry OSWindows MobilePalm / Web OSSymbian OS

How to deal with themOh noes, what are we going to do?

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Way to make appsNative

Hybrid

Runtimes

Web Apps

Why Web Apps are cool?

Already here: Easy to implement Works everywhere Geolocation Local stores Offline work CSS3 fancy styles

Coming soon: File API Directories and

System File Writer More cool stuff ?

So, how do we do it?

jQuery Mobile

jQTouch

Sencha Touch

iUI

SproutCore

<div data-role="page”><div data-role="header">

<h1>Page Title</h1></div><!-- /header -->

<div data-role="content"><p>Page content goes here.</p>

</div><!-- /content -->

<div data-role="footer"><h4>Page Footer</h4>

</div><!-- /footer --></div>

But what about Semantic Web?

rdfQuery

rdfstore-js

RDFauthor

And many-many more

Create and query triplestore Parse or add RDFa to page Reasoning over triplestores

Pure js implementation of RDF graph store with support for SPARQL

ConclusionsTo sum it up

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Thank you! Please don’t throw anything at me. K, thx, bye!

Questions?