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- Event
Prediction:
Learning from
Ambiguous
Examples: Event
prediction is
an important
problem with
many realworld
applications.
For the
majority of
these
applications,
it is not
necessary to
predict the
exact time an
event will
occur---it is
acceptable to
predict that
the event will
occur within
some time
interval. The
use of this
time interval
introduces
ambiguity into
the event
prediction
problem,
permitting it
to be viewed
as a
multiple-insta
nce learning
problem. We
have developed
timeweaver, a
genetic-algori
thm based
learning
system that
is...
- Generating
instance
models from
meta models: Software and
Systems
Modeling
(2009)Abstract
Meta
modeling is a
wide-spread
technique to
define visual
languages,
with the UML
being the most
prominent one.
Despite
several
advantages of
meta modeling
such as ease
of use, the
meta modeling
approach has
one
disadvantage:
it is not
constructive,
i.e., it does
not offer a
direct means
of generating
instances of
the language.
This
disadvantage
poses a severe
limitation for
certain
applications.
For example,
when
developing
model
transformation
s, it is
desirable to
have enough
valid instance
models
available for
large-scale
testing.
Producing such
a large set by
hand is
tedious. In
the related
problem of
compiler
testing, a
string grammar
together with
a simple
generation
algorithm is
typically used
to produce
words of the
language
automatically.
In this paper,
we introduce
instance-gener
ating graph
grammars for
creating
instances of
meta models,
thereby
overcoming the
main deficit
of the meta
modeling
approach for
defining
languages.
Source: Software and Systems Modeling (2009) - Instance
Filtering for
entity
recognition: SIGKDD Explor.
Newsl., Vol.
7, No. 1.
(June 2005),
pp. 11-18.
Source: SIGKDD Explor. Newsl., Vol. 7, No. 1. (June 2005), pp. 11-18. - What's in an
Instance?: The notion of
an instance is
ubiquitous in
knowledge
representation
s for domain
modeling. Most
languages used
for domain
modeling offer
syntactic or
semantic
restrictions
on specific
language
constructs
that
distinguish
individuals
and classes in
the
application
domain. The
use, however,
of instances
and classes to
represent
domain
entities has
been driven by
concerns that
range from the
strictly
practical
(e.g. the
exploitation
of
inheritance)
to the vaguely
philosophical
(e.g.
intuitive...
- On Dealing
with
Structural
Conflicts
between
Process Type
and Instance
Changes: Business
Process
Management
(2004), pp.
274-289.Adapti
ve process
management
systems must
be able to
support
changes of
single process
instances as
well as
modifications
at the process
type level and
their
propagation to
a collection
of related
process
instances. So
far, these two
kinds of
dynamic
process
changes have
been mainly
considered in
an isolated
manner.
However,
especially for
long-running
processes, it
must be
possible to
handle the
interplay
between
process type
and instance
changes as
well, but
without
running into
trouble at
runtime. This
paper presents
an extended
criterion for
correctly
propagating
process type
changes to
both,
instances
which are
still running
according to
their original
schema and
instances
which have
been
individually
modified. In
this context,
we discuss and
categorize
structural
conflicts
potentially
occuring
between
concurrent
process
changes. We
show that our
considerations
are applicable
to different
process meta
models and
present tests
for quickly
detecting such
structural
conflicts.
Source: Business Process Management (2004), pp. 274-289.
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