Recommendations on lexicon structure

1. If sufficient resources are available, and the scale of the development warrants it, a commercial database system should be preferred.
2. The development of new re-usable resources in an R&D context is likely to be best supported by the use of a LKRL with an efficient and flexible implementation, and the use of formalisms in this category can therefore be recommended for development purposes where re-usable resources are concerned.
3. Whatever the choice of formalism for a spoken language lexicon , the interface between the lexicon and other components of a spoken language system  needs to be given close attention.
4. A given single formalism is highly unlikely to provide optimal features for the development and construction of all components of a given system in the near future.
5. Object-oriented database structures and system architectures are likely to be used increasingly in spoken language systems  in order to permit the encapsulation of module-specific optimal formalisms, implementations and information.
6. Weigh the advantages of the use of specialised commercial databases against the practical convenience and portability  of ASCII database standards associated with the UNIX operating system   and UNIX ASCII processing tools for database format conversion and database access.
7. Consider whether a system lexicon  should be a single component, or, as is more usual in speech recognition applications, a ``distributed lexicon'' with lexical information associated with the speech recognition , stochastic language model  and lexical search  components.