Thefindings

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Unformatted text preview: ns
of
the
 dollar
bills
are
considered
as
a
proxy
to
the
real
movement
patterns
of
their
owners.
 c. The
main
finding
is
that
over
a
short
time
frame
(up
to
two
weeks)
the
distance
traveled
by
a
 bill,
between
its
current
location
and
the
next,
follows
a
power‐law
distribution
with
an
 exponent
of
roughly
1.6.
 d. Prof.
Kleinberg
describes
a
theoretical
model
where
people
are
located
on
a
two
dimensional
 grid
and
a
person
gets
an
additional
k
random
long
distance
acquaintances
according
to
a
 power‐law
distribution
with
exponent
alpha.
Kleinberg's
shows
that
efficient
navigation
 based
on
local
knowledge
is
only
possible
when
alpha
equals
2.


 
 We
can
draw
a
connection
between
the
paper...
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