Heavy Hitters
stream of Its
a
ay
ay
e g
IP addresses 64
each
ai
c
n
ex
n
2
For any true
ten
let
f
t
tires
ett appears
in
9,92
a
at
ffrequency
Goal
return
allelts
x
set
f large
Fa
using
- f
t
space
If
fxt Tz
add
to
list
- f
heavyhalters
Provably impossible
with
sub linear space Modified goal
If
fx
Yz
add it
to list
If
x
added to
list
then
w p s
l
f
fxtsnz En
Ee
Suppose
4
20
E
0.01
F Lto
If
fx
2
x
is definitely
- n list of HH
0.08N
if
x added to
list then with prob 31 Lto
f
Yz
En
- .O 5h
- 01h
O 04h
Modified goal
If
fx
Yz
add it
to
list
If
x
added to
list
then
w p s
l
f
fxtsnz
Engg
use elegant verysimple data stmche
Count MinSketch
des
l
I
s
e