Download - Demo-driven research in Lugano
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Yogi Berra
You’ve got to be carefulif you do not knowwhere you are going,because you might not get there.
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demo-drivenresearch
www.tudorgirba.com
challengedesigndemolisten
enable
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research?
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research improvesthe status quo
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the status quo?
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the status quothe existing state of affairs
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Picture by _FXR
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Picture by _FXR
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Picture by _FXR
F = m a.
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E = m c. 2
Picture by _FXR
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post-it
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the status quothe existing state of affairs
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the status quothe sum of our assumptions
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Tom de Marco
It’s not what you don’t know that kills you,it’s what you know that isn’t so
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the status quothe sum of our assumptions
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researchrevealing what no one revealed before
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demo-drivenresearch
www.tudorgirba.com
challenge
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demo-drivenresearch
www.tudorgirba.com
challengedesign
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demo-drivenresearch
www.tudorgirba.com
challengedesign
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demo-drivenresearch
www.tudorgirba.com
challengedesign
present
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to Understand Software Evolution
Modeling History
vorgelegt von
Tudor Gîrba
von Rumänien
Inauguraldissertation der Philosophisch-naturwissenschaftlichen
Fakultät der Universität Bern
Leiter der Arbeit:
Prof. Dr. Stéphane DucasseProf. Dr. Oscar Nierstrasz
Institut für Informatik und angewandte Mathematik
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To provide a genericmeta-model for expressing software evolution analyses, we need to recognize evolution as an explicit phenomenon and model it as a first class entity.
to Understand Software Evolution
Modeling History
vorgelegt von
Tudor Gîrba
von Rumänien
Inauguraldissertation der Philosophisch-naturwissenschaftlichen
Fakultät der Universität Bern
Leiter der Arbeit:
Prof. Dr. Stéphane DucasseProf. Dr. Oscar Nierstrasz
Institut für Informatik und angewandte Mathematik
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tudorgirba.com/blog
blog.duarte.com
thebackofthenapkin.com
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www.ted.com
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content
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content form
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content form
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content form
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yesterday’s weather
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30%
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30% 90%
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yesterdayWeatherProbabilityWithTopPreviousWENM: topPreviousWENMandTopCurrentENM: topCurrentENM | currentVersions previousClassHistoriesSortedByWENM yesterdayWeatherHits last2VersionsTopHistories last2Versions last2HistoriesSortedByENM x valuesCount previousVersionsTopHistories previousVersionsTopHistoriesNames over | currentVersions := OrderedCollection new. currentVersions addLast: (self allVersionNames at: 1).
yesterdayWeatherHits := 0.
(2 to: self allVersionNames size) do: [: i | self smelly: 'this algorithm is too big and complex'.
previousClassHistoriesSortedByWENM := (self classHistories selectFromReferenceVersionCollection: currentVersions) sortBy: [:a :b | a value getWENM >= b value getWENM]. currentVersions addLast: (self allVersionNames at: i).
previousVersionsTopHistories := OrderedCollection new.
x := previousClassHistoriesSortedByWENM first value getWENM. valuesCount := 0.
previousClassHistoriesSortedByWENM do: [ :each | (each value getWENM ~= x) ifTrue: [ valuesCount := valuesCount + 1. x:= each value getWENM]. (valuesCount < topPreviousWENM) ifTrue: [ previousVersionsTopHistories addLast: each] ].
last2VersionsTopHistories := OrderedCollection new.
last2Versions := OrderedCollection new. last2Versions addLast: (self allVersionNames at: (i-1)). last2Versions addLast: (self allVersionNames at: i). last2HistoriesSortedByENM := (self classHistories
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(each value getWENM ~= x) ifTrue: [ valuesCount := valuesCount + 1. x:= each value getWENM]. (valuesCount < topPreviousWENM) ifTrue: [ previousVersionsTopHistories addLast: each] ].
last2VersionsTopHistories := OrderedCollection new.
last2Versions := OrderedCollection new. last2Versions addLast: (self allVersionNames at: (i-1)). last2Versions addLast: (self allVersionNames at: i). last2HistoriesSortedByENM := (self classHistories selectFromReferenceVersionCollection: last2Versions) sortBy: [:a :b | a value getWENM >= b value getWENM].
x := last2HistoriesSortedByENM first value getENM. valuesCount := 0. last2HistoriesSortedByENM do: [ :each | (each value getENM ~= x) ifTrue: [ valuesCount := valuesCount + 1. x:= each value getENM]. (valuesCount < topCurrentENM) ifTrue: [ last2VersionsTopHistories addLast: each] ]. previousVersionsTopHistoriesNames := previousVersionsTopHistories collect: [ :each | each value name]. over := false.
last2VersionsTopHistories do: [:each | ((previousVersionsTopHistoriesNames includes: (each value name)) and: [over not]) ifTrue: [ yesterdayWeatherHits := yesterdayWeatherHits + 1. over := true]. ]. ].
^yesterdayWeatherHits/(self size - 1) asFloat.
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yesterdayWeatherProbabilityWithTopPreviousWENM: topPreviousWENMandTopCurrentENM: topCurrentENM | currentVersions previousClassHistoriesSortedByWENM yesterdayWeatherHits last2VersionsTopHistories last2Versions last2HistoriesSortedByENM x valuesCount previousVersionsTopHistories previousVersionsTopHistoriesNames over | currentVersions := OrderedCollection new. currentVersions addLast: (self allVersionNames at: 1).
yesterdayWeatherHits := 0.
(2 to: self allVersionNames size) do: [: i | self smelly: 'this algorithm is too big and complex'.
previousClassHistoriesSortedByWENM := (self classHistories selectFromReferenceVersionCollection: currentVersions) sortBy: [:a :b | a value getWENM >= b value getWENM]. currentVersions addLast: (self allVersionNames at: i).
previousVersionsTopHistories := OrderedCollection new.
x := previousClassHistoriesSortedByWENM first value getWENM. valuesCount := 0.
previousClassHistoriesSortedByWENM do: [ :each | (each value getWENM ~= x) ifTrue: [ valuesCount := valuesCount + 1. x:= each value getWENM]. (valuesCount < topPreviousWENM) ifTrue: [ previousVersionsTopHistories addLast: each] ].
last2VersionsTopHistories := OrderedCollection new.
last2Versions := OrderedCollection new. last2Versions addLast: (self allVersionNames at: (i-1)). last2Versions addLast: (self allVersionNames at: i). last2HistoriesSortedByENM := (self classHistories
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yesterdayWeatherProbabilityWithTopPreviousWENM: topPreviousWENMandTopCurrentENM: topCurrentENM | currentVersions previousClassHistoriesSortedByWENM yesterdayWeatherHits last2VersionsTopHistories last2Versions last2HistoriesSortedByENM x valuesCount previousVersionsTopHistories previousVersionsTopHistoriesNames over | currentVersions := OrderedCollection new. currentVersions addLast: (self allVersionNames at: 1).
yesterdayWeatherHits := 0.
(2 to: self allVersionNames size) do: [: i | self smelly: 'this algorithm is too big and complex'.
previousClassHistoriesSortedByWENM := (self classHistories selectFromReferenceVersionCollection: currentVersions) sortBy: [:a :b | a value getWENM >= b value getWENM]. currentVersions addLast: (self allVersionNames at: i).
previousVersionsTopHistories := OrderedCollection new.
x := previousClassHistoriesSortedByWENM first value getWENM. valuesCount := 0.
previousClassHistoriesSortedByWENM do: [ :each | (each value getWENM ~= x) ifTrue: [ valuesCount := valuesCount + 1. x:= each value getWENM]. (valuesCount < topPreviousWENM) ifTrue: [ previousVersionsTopHistories addLast: each] ].
last2VersionsTopHistories := OrderedCollection new.
last2Versions := OrderedCollection new. last2Versions addLast: (self allVersionNames at: (i-1)). last2Versions addLast: (self allVersionNames at: i). last2HistoriesSortedByENM := (self classHistories
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present
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present
past
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present
past future
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present
past future
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present
past future
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present
past future
prediction hit
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present
past future
YesterdayWeatherHit(present):
past:=all.topChanged(beginning, present) future:=all.topChanged(present, end)
past.intersect(future).notEmpty()
prediction hit
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hit hit hit
YW = 3 / 8 = 37%
hit hit hit hit hit hit hit
YW = 7 / 8 = 87%
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yWFor: yesterdayCheck for: tomorrowCheck | hits | hits := (self detailedYWFor: yesterdayCheck for: tomorrowCheck) sum: [ :each | each isEmpty ifTrue: [0] ifFalse: [1]]. ^ hits / (self versions size - 2)
yWFor: yesterdayCheck for: tomorrowCheck ^ ( 3 to: self versions size ) collect: [ :i | | yesterday tomorrow | yesterday := self selectByExpression: yesterdayCheck appliedFromVersionIndex: 1 toVersionIndexAndPresentInIt: i - 1. tomorrow := self selectByExpression: tomorrowCheck appliedFromVersionIndexAndPresentInIt: i - 1 toVersionIndex: self versions size. yesterday intersectWith: tomorrow ]
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content form
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content form
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demo-drivenresearch
www.tudorgirba.com
challengedesign
present
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demo-drivenresearch
www.tudorgirba.com
challengedesigndemo
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demo-drivenresearch
www.tudorgirba.com
challengedesigndemo
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demo-drivenresearch
www.tudorgirba.com
challengedesigndemolisten
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Reviewers are never stupid
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demo-drivenresearch
www.tudorgirba.com
challengedesigndemolisten
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demo-drivenresearch
www.tudorgirba.com
challengedesigndemolisten
enable
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it’s not Lupus
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established
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established
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disr
uptiv
e
established
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WhatWhereWhenWhoHow
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WhatWhereWhenWhoHow Why
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demo-drivenresearch
www.tudorgirba.com
challengedesigndemolisten
enable
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