Midterm2010_solution

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Unformatted text preview: 
anything
they
had
ever
read
about
the
Google
search
engine.
Because
of
this,
only
 the
first
three
signals
listed
were
graded.
The
first
two
signals
were
worth
three
points
each
 and
the
third
was
worth
four
points.

 i. Writing
about
any
signal
that
could
be
plausibly
used
in
the
Google
search
engine
 (regardless
of
whether
it
was
mentioned
in
the
article)
[+1
point].
 ii. Writing
about
a
signal
that
was
actually
mentioned
in
the
article,
and
suggesting
why
it
 might
be
helpful
in
web
search
[+
3
(or
+4)
points].

 
 Question
6)
 1. One
example
is
the
distribution
of
city
population
sizes
in
a
country.
A
natural
“Rich
Get
 Richer”
process
might
be
that
people
are
drawn
to
larger
cities
because
of
the
greater
 availability
of
job
opportunities
or
public
resources.
The
large
population,
in
turn,
causes
 the
city
to
generate
more
opportunities.
 2. Another
example
is
one
we
saw
in
class:
the
number
of
reviews
of
an
iPhone
application.
 The
most
reviewed
iPhone
a...
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This document was uploaded on 01/24/2014.

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