05/2017
VOL. 60 NO. 05
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Practice
36 Making Money Using Math
Modern applications
are increasingly using probabilistic
machine-learned models.
By Erik Meijer
43 MongoDB’s JavaScript Fuzzer
The fuzzer is for those edge cases
that your testing did not catch.
By Robert Guo
48 Research for Practice:
Cryptocurrencies, Blockchains,
and Smart Contracts; Hardware
for Deep Learning
Expert-curated guides to
the best of CS research.
Articles’ development led by
queue.acm.org
Contributed Articles
52 Who Owns the Social Web?
User attitudes toward online
intellectual property reveal how
far social norms have strayed
from legal notions of ownership.
By Catherine C. Marshall
and Frank M. Shipman
62 Responsible Research and
Innovation in the Digital Age
RRI requires doing the best
science for the world, not only
the best science in the world.
By Marina Jirotka, Barbara Grimpe,
Bernd Stahl, Grace Eden,
and Mark Hartswood
Watch the authors discuss
their work in this exclusive
Communications video.
http://cacm.acm.org/videos/
who-owns-the-social-web
Review Articles
70 Contest Theory
Exploring the basic game theory
models of contests found
in online services.
By Milan Vojnović
Research Highlights
82 Technical Perspective
Functional Compilers
By Guy Blelloch
83 Exploiting Vector Instructions
with Generalized Stream Fusion
By Geoffrey Mainland,
Roman Leshchinskiy, and
Simon Peyton Jones
92 Technical Perspective
Building Knowledge Bases
from Messy Data
By Alon Halevy
93 DeepDive: Declarative
Knowledge Base Construction
By Ce Zhang, Christopher Ré,
Michael Cafarella, Christopher De Sa,
Alex Ratner, Jaeho Shin, Feiran Wang,
and Sen Wu
Watch the author discuss
his work in this exclusive
Communications video.
http://cacm.acm.org/videos/
contest-theory
36 70
About the Cover:
This month’s cover story
is a study of attitudes.
Catherine Marshall and
Frank Shipman (p. 52)
share how social media
users view who owns
what online. Their studies
trace how the traditional
concepts of “ownership”
have drifted afar. Cover
illustration by Justin Metz.
