Ways to Share Knowledge Effectively

How
do
you
share
knowledge?

1

Donnerstag, 28. Juli 2011

How
do
you
share
knowledge?

Pairs
0

Pair
Programming
Reviews

1


How
do
you
share
knowledge?

Pairs Colleagues
0 5

Pair
Programming Mee8ngs
Reviews Emails
Chats

1


How
do
you
share
knowledge?

Remote

Pairs Colleagues
Collabs
0 5
42

Pair
Programming Mee8ngs Phone
Reviews Emails Emails
Chats Mailing
Lists

1


How
do
you
share
knowledge?

Remote

Pairs Colleagues Community
Collabs
0 5 1927
42

Pair
Programming Mee8ngs Phone Forums
Reviews Emails Emails Stackoverﬂow.com
Chats Mailing
Lists

1


Eclipse Code
Recommenders

“IDE 2.0”
Research at Eclipse.org
@MarcelBruch
O OP
EC
gile@
A


Eclipse
Code
Recommenders
All Frameworks Code

Code

Eclipse Code

Developers Who Called “new Text()” Method Also Called

setText() addListener() setLayout() setFont()

89% 53% 99% 35%

What Do Developers Ultimately Override After Extending This Class?
100 % overwrote
PreferencePage.createContents()

96 % overwrote
PreferencePage.performOk()

5 % overwrote
PreferencePage.performCancel()

4


“Other
developers
frequently
bought
used
the
following
methods…”

Intelligent
Code
Comple>on


Code
Comple8on…

What
does
the
developer
need,
i.e.,
which
methods
should

the
code
comple>on
present
to
the
user?

6


All
164
Methods
of
Text
?


JBuOon?
381
Methods.


Code
Comple8on…

What
does
the
developer
need,
i.e.,
which
methods
should

the
code
comple>on
present
to
the
user?

9


Intelligent
Code
Comple8on

…
or
just
the
three
missing
ones?

10


Tools
Outline

11


Tools
Outline

Intelligent
Code
Comple8on

11


Tools
Outline

Intelligent
Code
Comple8on Usage-‐Driven
Javadocs

11


Tools
Outline

Intelligent
Code
Javadocs

Code
Example
Recommender

How
do
I
get
an
instance
of…?

11


Tools
Outline

Intelligent
Code
Javadocs

Code
Example
Recommender Smart
Bug
Detec8on

How
do
I
get
an
instance
of…? What
have
I
missed?

11


Tools
Outline

Intelligent
Code
Javadocs

Stacktrace
Search
Engine

Code
Example
Recommender Smart
Bug
Detec8on

What
caused
that
stacktrace?

How
do
I
get
an
instance
of…? What
have
I
missed?

11


“Why
is
Google
Codesearch
not
‘google
for
code
search’?
”

Leveraging
User
Feedback
to
Improve
Code
Search
Engines


Leveraging
user
feedback

...

...

...

...

13

Reﬁne
the
ranking
based
on
feedback


Learning
how
to
rank…

15

Learning
how
to
rank…

1

2

3

15

Learning
how
to
rank…

1 2

2 1

3 3

15

Learning
how
to
rank…

1 2
Support
2 Vector 1

Machine
3 3

15

Learning
how
to
rank…

1 2
Support
a nk
2 Vector
M R 1

S V
Machine
3 3

15

Stackoverﬂow.com
–
Reloaded!

What
Caused
that
Stacktrace?


So
far
we
have…

Intelligent
Code
Javadocs

Code
Example
Recommender Smart
Bug
Detec8on

How
do
I
get
an
instance
of…? What
have
I
missed?


But
what
if
you
get
this?


Debugging
–
the
old
way


But
more
oQen
we
get…


How
can
we
ﬁx
that?

Don’t
stacktraces
share
some
commonali8es?

org.eclipse.swt.SWTException: Invalid thread access
at org.eclipse.swt.SWT.error(SWT.java:3884)
at org.eclipse.swt.widgets.Widget.error(Widget.java:463)
at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:355)
at org.eclipse.swt.widgets.ProgressBar.setSelection(ProgressBar.java:317)
at org.eclipselabs.cr.stacktraces.demo.ThreadDemo$1.run(Unknown Source)
at java.lang.Thread.run(Thread.java:619)


How
can
we
ﬁx
that?

Don’t
stacktraces
share
some
commonali8es?
ExceptionType Feature
(evaluates identical exception type) Message Similarity Feature
(counts of similar words)

org.eclipse.swt.SWTException: Invalid thread access
at org.eclipse.swt.widgets.Widget.error(Widget.java:463)
at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:355)
at org.eclipse.swt.widgets.ProgressBar.setSelection(ProgressBar.java:317)
at org.eclipselabs.cr.stacktraces.demo.ThreadDemo$1.run(Unknown Source)
at java.lang.Thread.run(Thread.java:619)

TraceDiff Similarity Feature
(counts similar stackframes per trace)


“IDE
2.0?
Leveraging
the
wisdom
of
the
(Eclipse)
community…”

Eclipse
Code
Recommenders


From
IDE
1.0
to
IDE
2.0

24


Leveraging
your
IDE’s
build
environment

25


Leveraging
your
IDE’s
build
environment

project
environment

25


Leveraging
your
IDE’s
build
environment
context

project
environment

25


Leveraging
your
IDE’s
build
environment
context
object
usage

project
environment

25


Leveraging
your
IDE’s
build
environment
context
object
usage

project selected
environment proposals

25


Leveraging
your
IDE’s
build
environment
context
object
usage

project selected

click
feedback

25


Leveraging
your
IDE’s
build
environment
context
object
usage

project selected

click
feedback

Stacktraces 25


Part
II:
Experience
Report
“Going
Eclipse”


Why?


font
size
≈
#
cita8ons
Google
Scholar

40
Research
Tools
on
SoQware
Engineering...
FindBugs Abbrevia8on
Comple8on
Exper>se
Browser
eRose
PopCon GrouMiner
Code
Recommenders
Ala]n

Jadet
FrUiT Exemplar PR-‐Miner
Dhruv Marie
eXoaDocs
Kagdi DynaMine Hipikat
CodeWeb SemDiﬀ
Mapo
Mylyn Error
Specs

CodeBroker
SNIFF CP-‐Miner
SpotWeb
Mica
Hill
and
Rideout
Suade Altair
Prospector
Jadeite
MUDABlue StrathCona
ParseWeb
OComple8on Sourcerer xSnippet 29


Tools
actually
used
by
Programmers....
Comple8on Exper8se
Browser

PopCon GrouMiner
eRose Code
Recommenders
Ala]n

FrUiT Exemplar PR-‐Miner
Jadet
Dhruv Marie
eXoaDocs
DynaMine
Kagdi Hipikat
CodeWeb
SemDiﬀ

Mapo Mylyn Error
Specs

CodeBroker
CP-‐Miner
SNIFF
SpotWeb
Mica
Hill
and
Rideout
Suade
Altair
Prospector
Jadeite
MUDABlue StrathCona
ParseWeb


“How
many
papers
could
I
write
instead...?”

What
prevents
you
from
doing?


Maturity
Levels

Start of Research Usable Industry-ready
Research Prototype Prototype Tool

t

32


Maturity
Levels

t

Infrastructure: Homepage Mailing List IP Checks
Primitive GUI Homepage Community
Source Tarballs Blog Release Plans
Issue Tracker Multi-Branches
Marketplace Continuous Integration

33


Maturity
Levels

t


Research: Paper Large-scale Evaluation
Data New Tools
New Papers

33


Maturity
Levels

t


Research: Paper Large-scale Evaluation
Data New Tools
New Papers

Perception: Research Community Early Adopters in Business
Companies

33


“There
is
sSll
no
free
lunch.
Community
needs
work...”

Retrospec>ve:
Building
a
Community


Eclipse
DemoCamps

Indigo: 3x 2011

Helios: 5x 2010

Galileo: 2x 2009

35


Eclipse
Magazine
Ar8cles
[de]

36


Industry
Conference
Talks
1x 2010
1x 2009,1x 2010

1x 2010

37


Company
Talks

38


Beginning
Coopera8ons

Eclipse
JDT

?
not yet :)

39


Future
Research
Coopera8ons?

Topic University

Abbrevia8on
Comple8on Massachuchetss
Ins8tute
of
Technology,
US

Subwords
Comple8on
Engine Paul
Emanuel
Faidherbe,
private

Stacktrace
Search Federal
University
of
Rio
de
Janeiro

“API
Groups”
Comple8on
Engine Munich
University
of
Technology,
Germany

Module
Exper8se
Recommender University
of
Kassel,
Germany

40


“Warning:
They
might
look
diﬀerent
to
what
you
expect...”

Some
Numbers


Mileage

Location Time(s) Attendees Distance
Darmstadt 4x 250 0 km
Frankfurt 2x 140 40 km
Walldorf 1x 150 70 km
Karlsruhe 3x 180 110 km
Ludwigsburg 2x 100 160 km
Bonn 1x 50 180 km
Kassel 1x 30 220 km
Dortmund 1x 50 250 km
Zurich 1x 10 390 km
Munich 1x 170 400 km
Total 15x 1130 4480 km

42


Webpage
Visits
DZone
Ar8cle
“IDE
2.0”
Eclipse
Summit
1st
Blog
DemoCamps
2000
DemoCamps
Eclipse
Summit
1529
1500 2.
DemoCamp
1155
1096
1021 1015 982
884 939
1000 818
692 647 630 682
546 606
491 499 521 475 507
500 284 267 278
183 197 209 166 142 165
63 0 0 0 0
0
1.3.09 1.5.09 1.7.09 1.9.09 1.11.09 1.1.10 1.3.10 1.5.10 1.7.10 1.9.10 1.11.10 1.1.11 1.3.11 1.5.11
University Eclipse.org
1.
DemoCamp
Move
to
Registered
Eclipse Eclipselabs
Eclipse Move
to
Marketplace
Magazin Eclipse

23,000 Visits from 01.03.2009 until 26.07.201.

43


Google
Analy8cs
Stats
University:
23
Months
01.03.2009
-‐
01.02.2011

Eclipse:
5
Months

15.02.2011-‐
26.07.2011

44


Visits
for
code-‐recommenders.blogspot.com

Not counting aggregators such as planeteclipse.org... 45


Twiner

46


Downloads
15.02.-‐25.07.

47


Downloads
15.02.-‐25.07.

1500

1125
1433

750

310
Completion 375
Codesearch 111
Extdocs 97
Subwords 1 0
Stacktraces 1
Bugs

47


“Not
everything
is
rosy.”

Annoying
liOle
things...


Time
Eﬀort

49


License
Restric8ons

50


Intellectual
Property
Checks

51


Elec8ng
Comminers

52


All this feels overly complicated
from academia perspective.
Yes, I know - there is a need for this...

53


Why
shouldn’t
you
stop?


Because
you
want
people
to
use
your
soQware!

55


You
write
tools
in
Eclipse?

56


You
write
tools
in
Eclipse?

We
provide
a
plaqorm:
• Eclipselabs
Git
Repository
• Build
System
• Database
• Infrastructure
in
Eclipse
and
Servers
(Selec8ons,
Code
Comple8on,

Codesearch,
Stacktraces,
Extended
Javadocs)

56


You
write
tools
in
Eclipse?

We
provide
a
plaqorm:
• Eclipselabs
Git
Repository
• Build
System
• Database
• Infrastructure
in
Eclipse
and
Servers
(Selec8ons,
Code
Comple8on,

Codesearch,
Stacktraces,
Extended
Javadocs)

We
build
a
community:
• DemoCamps,
• Industry
Conferences,
• Magazine
Ar8cles
/
Interviews,
• Blog,
• Twiner,
• ...

56


Tools
actually
used
by
Programmers....
Comple8on Exper8se
Browser
Mylyn
Code
Recommenders
PopCon GrouMiner
eRose
Ala]n PR-‐Miner
Exemplar
“Your
tool”
FrUiT
Jadet
Dhruv Marie
eXoaDocs
DynaMine
Kagdi Hipikat
CodeWeb

“Your
tool”
SemDiﬀ

Mapo
Error
Specs
CodeBroker
CP-‐Miner
SNIFF
SpotWeb
Mica
Hill
and
Rideout
Suade
Altair
“Your
tool” Jadeite
Prospector

MUDABlue StrathCona
ParseWeb


Thanks.


Ways to Share Knowledge Effectively

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