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Conversational Calculator

Conversational Calculator. Haoran Liang Xiaohua Liu. Why. We believe calculators should be: - simple in appearance - easy to use - helpful. How. A user-friendly interface Useful functions Low cost And… Fun !. What. Conversational. Calculator !. How we made the product.

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Conversational Calculator

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  1. Conversational Calculator Haoran Liang Xiaohua Liu

  2. Why • We believe calculators should be: • - simple in appearance • - easy to use • - helpful

  3. How A user-friendly interface Useful functions Low cost And… Fun !

  4. What Conversational Calculator !

  5. How we made the product Background research Wizard-of-Oz experiment Programming the prototype Building language model Making grammar file Testing Further improvement

  6. Background research • Human – Computer Interaction • Google Voice • Siri

  7. Wizard-of-Oz experiment Nearly 100 participants

  8. Programming the prototype In C# using Windows speech system In JAVA using Sphinx 4

  9. Building language model CMU-Cam Statistical Language Modeling Toolkit

  10. Making grammar file • Context free grammar: • BNF (Backus–Naur Form) • Different types of expressions • e.g. {numbers}{calculation}{numbers} • (one | two | three) ( plus | minus ) ( one | two | three ); • Weight • - Probability cutoff • - Linear interpolation

  11. Further improvement User interface

  12. Further Improvement • Functional features • Memory (Multi-step calculation) • Unit conversion/ Currency conversion • Background priority

  13. Acknowledgment • We would like to thank Professor. Nikolaos and Professor Leonard for the instructions during this semester. • A special thanks to George for great help on our project!

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