INTRODUCTION
This paper presents an Operating system for mobiles, Symbian OS. It is widely used in mobiles. It was designed as part of a joined effort by all mobile manufacturers. A natural language interface is not limited spatially, and thus can accommodate more information in one place. Second, people like to use natural language. Third, a natural language interface for the web can support voice input more easily. When people speak, they want to use natural language. Processing the natural language for filling out forms by spotting field values and using statistical approaches for disambiguating field value meanings. More specifically, a field value is a word or phrase that can be used as a value of a field in a form. the field values for the field departure city may be Los Angeles, New York, or San Francisco. a natural language user input, if each field valueâ„¢s corresponding field can be determined, then the form can be filled out. Consider the user input, find me a flight from Los Angeles to New York. The field values, shown in italics, are Los Angeles and New York for the form of figure 1. If the system knows which field value corresponds to which field in the form, the form can be properly filled out. In this case, Los Angeles belongs to the departure city field and New York to the arrival city field. The field to which a field value belongs to is the field valueâ„¢s meaning. Because a given field value may have multiple meanings within a given domain, the field value must be disambiguated based on the lexical context in which it is used. Each field value will be associated with a list of possible meanings and statistical methods will be used to rank this list of possible meanings.
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hello can i get paper presentation of the above topic pls

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1. Introduction
2.Need of Symbian o.s.
 Mobile phones are both small and mobile.
 Mobile phones are ubiquitous - they target a mass-market of consumer, enterprise and professional users.
 Mobile phones are occasionally connected - they can be used when connected to the wireless phone network, locally to other devices, or on their own.
 Manufacturers need to differentiate their products in order to innovate and compete in a fast-evolving market.
 The platform has to be open to enable independent technology and software vendors to develop third-party applications, technologies and services.
 3. Platform
2.1 Hardware
Computer Hardware Requirements: (minimum)
CPU: 1.2GHz processor, x86 architecture
Monitor: 1024 x 768-pixel screen, 16-bit color
Memory: 512MB
Hard drive: 200 MB of free disk space
Telephone Hardware Requirements:
A Symbian-able smartphone is needed, not every phone can run Symbian as OS.
 3. Platform
2.2 Operating System(s)
Computer Software:
Most of todays PC are suitable to run the required programs for developing for Symbian.
Telephone Software:
 S60
 UIQ
 MOAP
 3. Platform
2.3 Network Connectivity
 Which evolution in the various versions?
 Symbian OS 6.0 and 6.1 (also called ER6 ): Bluetooth was added for exchanging data over short distances from fixed and mobile devices. (2002)
 Symbian OS 7.0 and 7.0s: This version added EDGE support and IPV6. (2003)
What is the EDGE? (Enhanced Data rates for GSM Evolution)
 Symbian OS 8.0: There are not great evolution has shared some API’s to support 3G.
 3. Platform
2.3 Network Connectivity
 Which evolution in the various versions?
 Symbian OS 9.1: Change of version 1.2 for the Bluetooth has version 2.0 where the difference is the introduction of an Enhanced Data Rate (EDR) for faster data transfer.
 Symbian OS 9.3: The WIFI 802.11 and the HSDPA (High Speed Downlink Packet Access) appear on Symbian OS.
 Symbian Os 9.5: This last version includes native-support for mobile digital television broadcasts in DVB-H and ISDB-T formats and also location services.
 3. Platform
2.4 Security
The Symbian security model can be broken down into three main modules:
1. Trusted Computing Base (TCB)
Kernel, file system and software installer.
2. Data Caging
Protects executables and data files of applications.
3. Capabilities
Define what the application can and cannot do.
Capabilities:
Four types of capabilites:
- Open to all
- Granted by the user at installation time
- Granted through Symbian Signed
- Granted by the manufacturer

 3. Platform
2.6 Future possibilities
• The leading mobile OS
à Symbian OS is still the “leading figure” in the Smartphone's market and according to Gartner Symbian’s market share is still the majority with a trend to decline.
• Symbian - open source software platform
à Nokia’s buying the rest of Symbian that it doesn’t already own, and will then create the Symbian Foundation, in collaboration with a number of other companies, and make Symbian royalty-free and open-source.
• Implications to the other OS
à The Symbian Foundation stirs up the future of the open mobile platform space. It does seem fair to draw the conclusion that the Symbian Foundation puts the Symbian platform in a stronger position and this will negatively affect the other players.
 4. Software development
3.1 Development requirements
 The right SDK
 S60
 UIQ
 MOAP
 The IDE-tool of your choice
 4. Software development
 4. Software development
3.2 IDE and Tools
What is IDE* ?
An IDE is a software application that allows the computer programmer to develop software for a certain platform. An IDE normally has a: source editor, compiler and/or interpreter and debugger.
*Integrated Development Environment or also known as integrated design environment or integrated debugging environment.
 4. Software development
Which IDE ?
 Carbide C++
 CodeWarrior
 Visual C++
4. Software development
What tools are needed:
 Programing languages
Symbian OS offers a choice of programming languages to the developer. Symbian OS is written in C++ , and this is therefore regarded as its primary programming language.
 Programing languages
 Java 2nd the most important programing language on Symbian OS.
 Others programing languages which you can use on Symbian; JavaSript, Assembler,WMLScript,C# , Visual Basic, OPL and so on…
 5. Overall Evaluation
4.1 Advantages
• Operating system designed from scratch for mobile platforms
 mobile phones are both small and mobile
 mobile phones are ubiquitous – they target a mass-market of consumer, enterprise and professional users
 mobile phones are occasionally connected – they can be used when connected to the wireless phone network, locally to other devices, or on their own
 manufacturers need to differentiate their products in order to innovate and compete in a fast-evolving market
 the platform has to be open to enable independent technology and software vendors to develop third-party applications, technologies and services
• Best fitted for mobile market
• Great market share
• 5. Overall Evaluation
4.2 Limitations
 Steep learning curve for developers
 Developing in general
 Porting
 Symbian signed
 Dependency on Nokia (!)
 5. Overall Evaluation
4.3 Conclusion
 Manufacturs point-of-view
• Strong Operating System
• Established value
 Developers point-of-view
• Developing for Symbian brings limitations.
• A Symbian developer will only develop for Symbian. Is that interesting?

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