--- hekate:hekate_case_thermostat [2008/03/11 17:39]
wojnicki
+++ hekate:hekate_case_thermostat [2008/05/28 12:48]
gjn
@@ Line 6: / Line 6: @@
 ====== Introduction ======
+The ARD process can be easily explained using the following example.
+It is a reworked Thermostat case.
+The main problem described here is to create a temperature control system
+for an office.
+The design process is shown below.
 ===== Description =====
 ===== Conceptualization =====
 ==== Vocabulary ====
 ==== Original Rules ====
@@ Line 106: / Line 114: @@
 then  thermostat_setting is '14 degrees'
 </code>
+The seasons //ARE// correct, the Author lives in Australia.
 ===== Analysis =====
@@ Line 113: / Line 123: @@
 ==== General Conceptual Design ====
-Subsequent ARD levels are given below:
+==== Directed Conceptual Design ====
+We model the system aiming at matching the original rules.
+First, it is stated that there is a system to be designed which is described by
+a single conceptual attribute ''Thermostat''.
+It is so called level 0 of the design.
+Refining knowledge about what is the purpose of the system makes a transition to the diagram at level 1; it is a finalization.
+It is stated that the thermostat controls temperature and this control has something to do with time.
+That is why ''Thermostat'' is finalized into ''Time'' and ''Temperature''.
+Furthermore, at level 2, it is stated that ''Temperature''
+depends on ''Time'': there are two properties identified in the
+system and a functional dependency between them.
+The design process continues, through splits and/or finalizations, until all physical attributes (indicated with lower case letters) are identified and relationships among them are stated which is presented at level 8.
+The whole process is shown below:
+^ ARD diagram          ^ Corresponding THP  ^ VARDA model  ^
+| <graphviz file="hekate:therm-a0.dot"></graphviz>  | | ard_att_add('Thermostat'), ard_property_add(['Thermostat'])  |
+| <graphviz file="hekate:therm-a1.dot"></graphviz>  | <graphviz file="hekate:therm-t1.dot"></graphviz> | ard_att_add('Time'), ard_att_add('Temperature'), ard_finalize(['Thermostat'], ['Time','Temperature'])   |
+| <graphviz file="hekate:therm-a2.dot"></graphviz>  | <graphviz file="hekate:therm-t2.dot"></graphviz> | ard_split(['Time','Temperature'],[ ['Time'],['Temperature']], [ [ ['Time'],['Temperature']]])|
+| <graphviz file="hekate:therm-a3.dot"></graphviz>  | <graphviz file="hekate:therm-t3.dot"></graphviz> | ard_att_add('Date'),  ard_att_add('Hour'), ard_att_add(season), ard_att_add(operation), ard_finalize(['Time'],['Date','Hour',season,operation])|
+| <graphviz file="hekate:therm-a4.dot"></graphviz>  | <graphviz file="hekate:therm-t4.dot"></graphviz> | ard_split(['Date','Hour',season,operation],[ ['Date','Hour'],[season,operation]],[ [ ['Date','Hour'], [season,operation]],[ [season,operation],['Temperature']]])|
+| <graphviz file="hekate:a5f.dot"></graphviz> | <graphviz file="hekate:t5f.dot"></graphviz> | ard_split([season,operation],[ [season],[operation]],[ [ ['Date','Hour'],[season]],[ ['Date','Hour'],[operation]],[ [season],['Temperature']],[ [operation], ['Temperature']]])|
+| <graphviz file="hekate:a6f.dot"></graphviz> | <graphviz file="hekate:t6f.dot"></graphviz> | ard_split(['Date','Hour'],[ ['Date'],['Hour']],[ [ ['Date'],[season]],[ ['Date'],[operation]],[ ['Hour'],[operation]]])|
+| <graphviz file="hekate:a7f.dot"></graphviz> | <graphviz file="hekate:t7f.dot"></graphviz> | ard_att_add(day), ard_att_add(month), ard_att_add(today), ard_finalize(['Date'],[day,month,today])|
+| <graphviz file="hekate:a8f.dot"></graphviz> | <graphviz file="hekate:t8f.dot"></graphviz> | ard_split([day,month,today],[ [month],[day,today]],[ [ [month],[season]],[ [day,today],[operation]]])|
+| <graphviz file="hekate:a9f.dot"></graphviz> | <graphviz file="hekate:t9f.dot"></graphviz> | ard_split([day,today],[ [day],[today]],[ [ [day],[today]],[ [today],[operation]]]|
+| <graphviz file="hekate:a10f.dot"></graphviz> | <graphviz file="hekate:t10f.dot"></graphviz> | ard_att_add(hour), ard_finalize(['Hour'],[hour]), ard_att_add(thermostat_settings), ard_finalize(['Temperature'],[thermostat_settings])|
+=== Full Optimized Design ===
+VARDA can automatically optimize the diagram, by re/collapsing the lowest ARD using TPH.
+The subsequent //optimized// ARD levels (as recreated by VARDA) are given below:
 {{:hekate:thermostat-ard.png|:hekate:thermostat-ard.png}}
@@ Line 120: / Line 174: @@
 {{:hekate:thermostat-tph.png|:hekate:thermostat-tph.png}}
-XTT prototype generated by [[VARDA]]:
-{{:hekate:thermostat-varda-xtt.png|:hekate:thermostat-varda-xtt.png}}
 === Full ARD Model ===
-See ''therm-model.pl'' in [[hekate:varda]]
+See ''{{:hekate:therm-model.pl|therm-model.pl}}'' in [[hekate:varda]]
-==== Directed Conceptual Design ====
 ==== Refined Conceptual Design ====
@@ Line 136: / Line 184: @@
 ===== Structuralization =====
+XTT prototype generated by [[VARDA]]:
+{{:hekate:thermostat-varda-xtt.png|:hekate:thermostat-varda-xtt.png}}
 ===== Logical design =====

hekate/hekate_case_thermostat.txt · Last modified: 2019/06/27 15:49 (external edit)

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