Information

2014-03-26 Thread Angelo Immediata
Hi there In my project I have to implement a routing system with good performance; at the beginning this system should be able in giving routes information only for one italian region (Lombardia) but it could be used for the whole Italy (or world) Let's stop to the Lombardia for now. By

Re: Information

2014-03-26 Thread Sebastian Schelter
For such a small graph, using a single machine graph processing system makes more sense imho. Should be faster and easier to program. Google for cassovary. Am 26.03.2014 10:12 schrieb Angelo Immediata angelo...@gmail.com: Hi there In my project I have to implement a routing system with good

Re: Information

2014-03-26 Thread Angelo Immediata
hi Sebastian thnx for the answer I was giving a look to cassovary, but I'm losing hot to integrate it with neo4j and/or hor to calculate paths with it.Do you have any tips? Angelo 2014-03-26 11:31 GMT+01:00 Sebastian Schelter ssc.o...@googlemail.com: For such a small graph, using a

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2014-03-26 Thread Claudio Martella
It looks like you're expecting to use Giraph in an online fashion, such as you would use a database to answer queries within milliseconds or seconds. Giraph is an offline batch processing system. On Wed, Mar 26, 2014 at 11:11 AM, Angelo Immediata angelo...@gmail.comwrote: Hi there In my

Re: Information

2014-03-26 Thread Angelo Immediata
hi Claudio so, if I understood correctly, it has no sense to use Giraph for shortest path calculation in my scenario Am I right? 2014-03-26 13:27 GMT+01:00 Claudio Martella claudio.marte...@gmail.com: It looks like you're expecting to use Giraph in an online fashion, such as you would use a

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2014-03-26 Thread Sebastian Schelter
Hi Angelo, It very much depends on your use case. Do you want to precompute paths offline in batch or are you looking for a system that answers online? Giraph has been built for the first scenario. --sebastian On 03/26/2014 02:48 PM, Angelo Immediata wrote: hi Claudio so, if I understood

Re: Information

2014-03-26 Thread Angelo Immediata
hi Sebastian OK...I got itI was thinking I could use it for an online scenario.. Thank you Angelo 2014-03-26 14:52 GMT+01:00 Sebastian Schelter s...@apache.org: Hi Angelo, It very much depends on your use case. Do you want to precompute paths offline in batch or are you looking

Re: Information

2014-03-26 Thread Claudio Martella
Nope, you can think about Giraph as MapReduce for graphs. Probably neo4j C is the way to go for you. On Wed, Mar 26, 2014 at 3:18 PM, Angelo Immediata angelo...@gmail.comwrote: hi Sebastian OK...I got itI was thinking I could use it for an online scenario.. Thank you Angelo

About edge weight update

2014-03-26 Thread Jyoti Yadav
Hi Giraphers.. Suppose in single source shortest path sample example data given below, [1,0[[2,*10*],[3,*20*]]] In Giraph, can we udate the edge weight *10* and *20* during our compute function?? Seeking your ideas.. Thanks Regards Jyoti