Class specialisation

1
Class specialisation
cast iron
engine part
SG cast iron
rotating part
crankshaft
SG cast iron crankshaft
V6 crankshaft
unmachined-surface part
Rover 75 crankshaft
machined-surface part
SG cast iron grade XYZ
part with oil holes
Rover 75 crankshaft rev1.2
2
Specialisation/subset
Two statements
Every Rover 75 crankshaft is a SG cast iron
crankshaft. Some SG cast iron crankshafts are
Rover 75 crankshafts.
SG cast iron crankshaft
Rover 75 crankshaft
The crankshaft in my car.
3
Intersection of classes
cast part
cast engine part
engine part
A complete definition of 'cast engine part'
without words!
4
Intersection of classes
cast part
cylinder block
engine part
Two subset relationships are not a complete
definition!
5
Class specialisation
rotating equipment
stainless steel
pump
18Cr - 8Ni
pumps sulfinol
centrifugal pump
Type 304L
P 1001
pumps toxic material
EQN P 1001
model JBC/ XYZ_123
6
Progressive specialisation
maximum discharge head 710.34 m liq
ab minimum suction head 19.34 m
liq differential head 691 m
liq minimum capacity 41 dm3
sec-1 normal capacity 91.3
dm3 sec-1 viscosity
5.87 cS
etc.
P 1001
Process/function/facility specification the
pump in the plant complies with each criterion
process specification max allowable operating
pressure 94.8 bar g absorbed power
889 kW suction flange class
600 lbs suction flange
diameter 10 in discharge
flange class 600
lbs discharge flange diameter 8 in
etc.
EQN P 1001
Equipment/physical/material specification
mechanical engineers add more criteria
7
Set theory
set_1
complement
classification_schema. class
set_2
universe
set_1
same_membership
set_2
resultant
intersection
operand S2,?
base
power_set
derived
superset
proper_subset
subset
superset
subset
subset
resultant
union
operand S2,?
8
Classification
issue 0 or 1
containing_set
S0,? members
complete_membership
classifier
applied_classification_ assignment
classified
(EX) classified_select
(EX) classifier_select
41
group
41
214
class
attribute_classification_assignment
1
class_by_extension
class_by_intension
(EX) classified_entity_ for_attribute_select
9
Specialisation of relations
part of assembly
impeller of pump
impeller type ABC in pump type XYZ
manufacturer recommended component usage
impeller with serial no. I_456 installed in pump
with serial no. P_123
10
Mapping and member
related_1
physical object
physical object relationship
related_2
pump P_123 impeller I_456
I_456 is an impeller of pump P_123
membership
membership
related_1
class of physical object
class of physical object relationship
related_2
whole
class of composition of physical object
part
pump type XYZ impeller type ABC
ABC is an impeller type for XYZ
pump impeller
a pump has an impeller
11
Representation using RDF
ltClass ID"Pump"gt lt/Classgt ltClass
ID"Impeller"gt lt/Classgt ltProperty
ID"impellerOfPump"gt ltdomain resource"pump"/gt ltr
ange resource"impeller"/gt lt/Propertygt ltProperty
ID"pumpContainingImpeller"gt ltdomain
resource"impeller"/gt ltrange resource"pump"/gt lt
/Propertygt ltPump ID"P_123"gt ltimpellerOfPump
resource"I_456"/gt lt/Pumpgt ltImpeller
ID"I_456"gt ltpumpContainingImpeller
resource"P_123"/gt lt/Impellergt
dictionary
specific data