4.6 Summary and Outlook

So what can we say in general about the pros and cons of finite state techniques for dialogue processing? Let's sum up the conclusions we can draw from our case study of the speaking elevator, its capabilities and the perspectives of extending them. After that, we will have a brief look at a two much more ambitious dialogue systems, namely TRAINS and TRIPS. Their behaviour goes far beyond what can be realized with finite state techniques alone.

• 4.6.1 Advantages and disadvantages

• 4.6.2 The CSLU tool

• 4.6.3 Beyond finite state techniques