<s>
The	O
α-algorithm	O
or	O
α-miner	O
is	O
an	O
algorithm	O
used	O
in	O
process	B-Algorithm
mining	I-Algorithm
,	O
aimed	O
at	O
reconstructing	O
causality	O
from	O
a	O
set	O
of	O
sequences	O
of	O
events	O
.	O
</s>
<s>
Alpha	O
miner	O
was	O
the	O
first	O
process	B-Algorithm
discovery	I-Algorithm
algorithm	O
ever	O
proposed	O
,	O
and	O
it	O
gives	O
a	O
good	O
overview	O
of	O
the	O
aim	O
of	O
process	B-Algorithm
discovery	I-Algorithm
and	O
how	O
various	O
activities	O
within	O
the	O
process	O
are	O
executed	O
.	O
</s>
<s>
Alpha	O
miner	O
was	O
also	O
the	O
basis	O
for	O
the	O
development	O
of	O
many	O
other	O
process	B-Algorithm
mining	I-Algorithm
techniques	O
such	O
as	O
,	O
was	O
developed	O
based	O
on	O
the	O
idea	O
alpha	O
miner	O
is	O
built	O
on	O
.	O
</s>
<s>
Event	O
log	O
is	O
the	O
primary	O
requirement	O
for	O
applying	O
any	O
process	B-Algorithm
discovery	I-Algorithm
algorithm	O
.	O
</s>
<s>
The	O
alpha	O
miner	O
starts	O
with	O
converting	O
an	O
event	O
log	O
into	O
directly-follows	O
,	O
sequence	O
,	O
parallel	O
,	O
and	O
choice	O
relations	O
,	O
and	O
using	O
them	O
to	O
create	O
a	O
petri	B-Operating_System
net	I-Operating_System
describing	O
the	O
process	O
model	O
.	O
</s>
<s>
For	O
the	O
example	O
given	O
above	O
,	O
the	O
following	O
petri	B-Operating_System
net	I-Operating_System
would	O
be	O
resultant	O
of	O
the	O
application	O
of	O
alpha	O
miner	O
.	O
</s>
<s>
Implicit	O
places	O
:	O
Alpha	O
miner	O
cannot	O
distinguish	O
between	O
implicit	O
and	O
required	O
places	O
and	O
thus	O
might	O
result	O
in	O
additional	O
non	O
required	O
places	O
in	O
the	O
discovered	O
petri	B-Operating_System
net	I-Operating_System
.	O
</s>
<s>
Representational	O
bias	O
:	O
Alpha	O
miner	O
can	O
only	O
discover	O
petri	B-Operating_System
net	I-Operating_System
thus	O
adding	O
representational	O
bias	O
such	O
as	O
requirement	O
on	O
unique	O
visible	O
labels	O
for	O
every	O
transition	O
.	O
</s>
