@InProceedings{Fujisaki2010_535,
<br/>   author = {Hiroya Fujisaki},
<br/>   booktitle = {Studientexte zur Sprachkommunikation: Elektronische Sprachsignalverarbeitung 2010},
<br/>   title = {In Search of Models — A Review of the Author’s Research over a Half Century},
<br/>   year = {2010},
<br/>   editor = {Hansjörg Mixdorff},
<br/>   month = mar,
<br/>   pages = {29--30},
<br/>   publisher = {TUDpress, Dresden},
<br/>   abstract  = {In this talk I will start by defining what I mean by a ‘model’ and by emphasizing the
importance of creating a proper model for the phenomenon under study. What is meant by a
proper model is not just an ad hoc mathematical approximation of what one superficially
observes, but one that is based on understanding of the underlying principle. I will then show
four examples of such models I developed during my research career of over the past 50 years.
1. A model for the humanuse of language in sending and receiving information
By looking into the processes involved in the use of language in sending and receiving
information, this work shows that the two aspects are quite different and their characteristics
require separate mathematical formulations.
A model for the human processesof controlling the fundamental frequency of speech
By examining the underlying mechanisms, this work explains why formulating the
fundamental frequency contour in terms of logarithmic frequency leads to a precise model
and separation of two types of components related to phrasing and accentuation,
respectively, and why the two components have shapes of response curves of second-order
linear systems.
A model for the humanprocesses involved in identification and discrimination
By critically analyzing the cognitive processes involved in identification and discrimination
experiments, this work shows the mathematical relationship between the two processes and
hence between the two performance curves, and proves that the so-called phenomenon of
categorical perception is an artifact coming from the experimental paradigm.
A modelfor the process of dialogue
By looking into the process of dialogue, this work clearly shows that the finite-state
automaton often used in modeling a dialogue is inadequate, and presents a novelalternative
way of modeling a dialogue in terms of two interacting finite-state automata that are
different from conventional finite-state automata.
In summary, it is the author’s belief that one needs to go beyond conventional views, but proper
models are often based on the commonsense.},
<br/>   isbn = {978-3-941298-85-9},
<br/>   issn = {0940-6832},
<br/>   keywords = {Session in Honor of Hiroya Fujisaki},
<br/>   url = {https://www.essv.de/pdf/2010_29_30.pdf},
<br/>}