Need help on simple giraph input format

[Arghya Kusum Das <ar...@gmail.com>]

Hi,
This is the first time I am trying to deal with giraph input format class
and need some help.

I have a simple Graph like following:

AAA  AAT  AAG
AAC  ACG ACT
AAG AGT  AGA
AAT ATT
ACG CGA
ACT CTG CTT CTC

The first column is the vertex id and the following are the edges
(Adjacency list).

Is there any predefined input-format in giraph for this?
If so what is that? And if not can anybody provide a simple class for that?

Any help is appreciated

-- 
Thanks and regards,
Arghya Kusum Das
(225-270-6163)

Re: Need help on simple giraph input format

[Arghya Kusum Das <ar...@gmail.com>]

Hi Matthew,

Thanks for your quick reply.
I sent a subscription request to user list also.

Regarding the graph: No it is not possible to come up with different
integer ids for different nodes. Because the vertex id can be even more
than 50 characters (It is just a simple excerpt).  So I need a very simple
text based vertex input format where each line represents a vertex and its
outgoing edges (adjacency list).

I thought since it is pretty generic and simple there should be something
already present

Thansk and Regards,
Arghya Kusum Das

On Thu, Dec 4, 2014 at 5:50 PM, Matthew Saltz <sa...@gmail.com> wrote:

> Hi,
>
> If you can simply come up with long values to represent your vertex ids
> instead of text (AAA -> 1, AAC -> 2, etc.), you can just use this class
> <
> https://giraph.apache.org/apidocs/org/apache/giraph/io/formats/LongLongNullTextInputFormat.html
> >
> directly.
> If not, take a look at that code to give you some ideas on how to implement
> it with text ids instead. There might be another one already available to
> do this but this is the best I can think of at the moment.
>
> Best,
> Matthew
>
>
> PS I think this is a question that would be better directed towards the
> user
> <https://giraph.apache.org/mail-lists.html> mailing list.
>
> On Fri, Dec 5, 2014 at 12:20 AM, Arghya Kusum Das <
> arghyakusumdas2266@gmail.com> wrote:
>
> > Hi,
> > This is the first time I am trying to deal with giraph input format class
> > and need some help.
> >
> > I have a simple Graph like following:
> >
> > AAA  AAT  AAG
> > AAC  ACG ACT
> > AAG AGT  AGA
> > AAT ATT
> > ACG CGA
> > ACT CTG CTT CTC
> >
> > The first column is the vertex id and the following are the edges
> > (Adjacency list).
> >
> > Is there any predefined input-format in giraph for this?
> > If so what is that? And if not can anybody provide a simple class for
> that?
> >
> > Any help is appreciated
> >
> > --
> > Thanks and regards,
> > Arghya Kusum Das
> > (225-270-6163)
> >
>



-- 
Thanks and regards,
Arghya Kusum Das
(225-270-6163)

Re: Need help on simple giraph input format

[Matthew Saltz <sa...@gmail.com>]

Hi,

If you can simply come up with long values to represent your vertex ids
instead of text (AAA -> 1, AAC -> 2, etc.), you can just use this class
<https://giraph.apache.org/apidocs/org/apache/giraph/io/formats/LongLongNullTextInputFormat.html>
directly.
If not, take a look at that code to give you some ideas on how to implement
it with text ids instead. There might be another one already available to
do this but this is the best I can think of at the moment.

Best,
Matthew


PS I think this is a question that would be better directed towards the user
<https://giraph.apache.org/mail-lists.html> mailing list.

On Fri, Dec 5, 2014 at 12:20 AM, Arghya Kusum Das <
arghyakusumdas2266@gmail.com> wrote:

> Hi,
> This is the first time I am trying to deal with giraph input format class
> and need some help.
>
> I have a simple Graph like following:
>
> AAA  AAT  AAG
> AAC  ACG ACT
> AAG AGT  AGA
> AAT ATT
> ACG CGA
> ACT CTG CTT CTC
>
> The first column is the vertex id and the following are the edges
> (Adjacency list).
>
> Is there any predefined input-format in giraph for this?
> If so what is that? And if not can anybody provide a simple class for that?
>
> Any help is appreciated
>
> --
> Thanks and regards,
> Arghya Kusum Das
> (225-270-6163)
>