PROCEEDINGS IPMU '08
An extended, specificity based approach to linguistic summarization of time series
Janusz Kacprzyk, Anna Wilbik
We reformulate and extend our previous
works (cf. Kacprzyk, Wilbik and
Zadrozny [7] – [17]), mainly towards a
more complex evaluation of results on
the linguistic summarization of time series
meant as the derivation of an linguistic
quantifier driven aggregation of
partial trends with respect to the dynamics
of change, duration and variability.
We use Zadeh’s calculus of linguistically
quantified propositions but, in addition
to the basic criterion of a degree
of truth (validity), we also use a degree
of specificity to make it possible to account
for a frequent case that though
the degree of truth of a very general (not
specific) summary is high, its usefulness
may be low due to its low specificity.
We show an application to the absolute
performance type analysis of daily quotations
of an investment fund.
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