Contributed on May 27, 2014

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PhD Day 2014

Description

Slides of my presentation at our faculty’s PhD Day, 23 May 2014, Gent, B

Transcript

1/23
www.janclaes.info
FACULTY OF ECONOMICS AND BUSINESS ADMINISTRATION
Jan Claes
Teaching assistant : PhD 2009 – 2015
Supervisors : Geert Poels & Frederik Gailly
Why do people struggle with the complexity
of constructing a process model?
2/23
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Business Process Modeling (BPM)
3/23
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Business Process Modeling (BPM)
Assumptions
 Constructing process models is useful
 Process model quality is important
Business Process Modeling (BPM)
 Process model quality
“what is a good process model?”
 Process of process modeling (PPM)
“how to make a good process model?”
4/23
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FACULTY OF ECONOMICS AND BUSINESS ADMINISTRATION
How do people construct such process models?
5/23
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Process of Process Modeling (PPM)
Descriptions of real
or intended process
Modeler
Modeling
Process model
Modeling software
Modeling language
Real process Model reader
Process engine
6/23
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PPMChart visualization
 CREATE_ACTIVITY
 CREATE_START_EVENT
 CREATE_END_EVENT
 CREATE_AND
 CREATE_XOR
 CREATE_EDGE
 MOVE_ACTIVITY
 MOVE_START_EVENT
 MOVE_END_EVENT
 MOVE_AND
 MOVE_XOR
 DELETE_ACTIVITY
DELETE_START_EVENT
 DELETE-END_EVENT
 DELETE_AND
 DELETE_XOR
 DELETE_EDGE
 NAME_ACTIVITY
 RENAME_ACTIVITY
 NAME_EDGE
 RENAME_EDGE
 Start event
 Edge
 Activity
 Gateway
 Edge
 Activity
 Edge
 Edge
 Activity
 Edge
 Gateway
 Edge
7
29
8
9
32
14
30
31
10
33
56
34
time
modelelements
7/23
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Flow-oriented modeling
8/23
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Aspect-oriented modeling
9/23
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Undirected modeling
10/23
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Observations (objective)
Obs. 1. Majority used serialized approach
Obs. 2. 28% flow-oriented modeling
Obs. 3. 9% aspect-oriented modeling
Obs. 4. 10% undirected modeling
Obs. 5. Undirected sessions lasted longer
11/23
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FACULTY OF ECONOMICS AND BUSINESS ADMINISTRATION
What about the quality
of the corresponding models?
12/23
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Impressions (subjective)
Impr. 1. Modelers need serialization
Impr. 2. Structured serialization helps
Impr. 3. Structuring does not help everyone
Impr. 4. Structuring the modeling process
helps structuring the model
13/23
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Effectiveness and efficiency
Flow-oriented
Aspect-oriented
Undirected
 Good structure
 Fast modeling
 Good structure
 Fast modeling
 Poor structure
 Slow modeling
14/23
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FACULTY OF ECONOMICS AND BUSINESS ADMINISTRATION
Is there a rational for these
observations and impressions?
15/23
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Kinds of human memory
input
Sensory
memory
Working
memory
Long term
memory
performance
OBSERVATION SELECTION
ORGANIZATION
RETRIEVALTRANSFER
16/23
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Types of cognitive load
Time
Instantaneousload
overall load
intrinsic
load
extraneous
load
germane
load
free
capacity
assumed capacity
instantaneous
load
overload
17/23
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PRESAGEPROCESSPRODUCT
Cognitive Load Theory (CLT)
case complexity prior knowledge
input material
representation fit
working memory
capacity
extraneous
cognitive load
germane
cognitive load
schema construction
process model quality
A B The more A, the more B A B The more A, the less B A B The more A, the more B on the long term
overall construction time
cognitive overload
intrinsic
cognitive load
++
+
+
+++
+ +
–
–––
–
–
18/23
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Cognitive Fit Theory (CFT)
Hidden Figures Test (HFT)
Need for structure
Learning styleField dependency
Sensory
Visual
Inductive
Active
Sequential
Intuitive
Auditory
Deductive
Reflective
Global
I ♥︎ chaos I #$@&! chaos
19/23
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FACULTY OF ECONOMICS AND BUSINESS ADMINISTRATION
What can we do with this knowledge?
20/23
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Impressions
Cognitive theoryObservations
Theory building
Structured Process
Modeling Theory
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21/23
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Structured Process Modeling Theory (SPMT)
A B A determines BA B The more A, the more B+ A B The more A, the less B– A B A translates into B
learning style
degree of
serialization
adopted serialization
style
need for
structure
field-
dependency
– +
intrinsic cognitive load
for modeling phases
intrinsic cognitive load
for aggregation phases
cognitive overload
intrinsic cognitive load
for strategy building phases
+ + +
serialization style fit
structuredness
of serialization
– –– –
1 2 3
22/23
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Future work
SPMT = theory for explaining reality
 Descriptive, not for predicting
Future work = theory for design and action
 Prescriptive, differentiation is key
Future work = design science
 Tool support
• Measure cognitive style
• Suggest appropriate modeling technique
• Adapt tool to support that particular technique
23/23
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OVERVIEW COGNITION EXPERIMENT
Thanks for you attention!
> Do you have feedback on my research plans? <
> how do people construct models <
> cognitive support <
> SPMT <
Jan Claes
jan.claes@ugent.be
http://www.janclaes.info
Twitter: @janclaesbelgium