[Neo4j] google n grams data set in neo4j
Hey Everyone, I am curently advising two high school students for a programing project for some german student competition. They have inserted the German google n-gram data set several GB of natural language to a neo4j data base and used this to make sentence prediction to improve typing speed. The entire project is far from being complete but there is some code available on how we modelled n-grams in neo4j and what we used for prediction Both approaches very basic and as you would expect them. Still they already work in a decent way showing again the power of neo4j. We would be happy for some feedback thoghts and suggestions for further improvement. Find more info in my blog post: http://www.rene-pickhardt.de/download-google-n-gram-data-set-and-neo4j-source-code-for-storing-it/ or in the source code: http://code.google.com/p/complet/source/browse/trunk/Completion_DataCollector/src/completion_datacollector/Main.java?spec=svn64r=64 by the way. even though the code is just hacked down it uses hashmaps to store nodes in memory and increase inserting speed. and builds the lucene index later. Of course it would be even better to use the batch inserter. best regards René -- -- mobile: +49 (0)176 6433 2481 Skype: +49 (0)6131 / 4958926 Skype: rene.pickhardt www.rene-pickhardt.de http://www.beijing-china-blog.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Activity Streams and Twitter Sample App
@ qcon: I can't find the twitter videos on http://qconlondon.com/london-2011/ rick could you please point to further rescources? @ aseem: I gave a detailed answer to your questions on http://www.rene-pickhardt.de/graphity-an-efficient-graph-model-for-retrieving-the-top-k-news-feeds-for-users-in-social-networks/#comment-1295 but I think we have the same oppinion. The approach that you wrote down here is exactly what my baseline STOU does. you have your friendship relations as a (S)tar and the events as (T)emporal (O)rdered (U)pdeats ( = STOU ) The merging traversal is the same in STOU and Graphity. The only difference is that in STOU I have to sort the egonetwork O(d log d) where d is infact the outdegree. Once we understand this everything else is easy: You look at your kind of application and decide what your ratio of read to write operations is. Once reading happens far more frequently you better use graphity in the other case your method seems more sufficiant. What I have learnt from your comments that not only the ratio of reads to writes is interesting but the distribution of outdegrees should be considered when deciding which algorithm to use.. If the outdegree really stays small your approach will be more efficiently. @maxdemermazi: performance with bigger k drops in both cases. retrieval with graphity is O(k log k) where STOU is O(d log d + k log k) and for small k the d part is just dominating. So what's happening here is that graphity will always be faster since no sorting of the egonetwork is involved. Besides. Why would you want to have such a big k. Even if your twitter stream genereated that many updates when you come to the website you will only get to see a small k of them and as soon as you scroll down you will see the next k + l tweets... @custom neo4j: well let's ask Peter if neotechnology will include support to handle that many relationship types again to neo4j. I certainly would be happy about that. 2011/11/22 maxdemarzi maxdema...@gmail.com A couple of things bothered me about Rene's approach. 1. Custom Neo4j that could handle lots of relationship types. Not 100% sure where this fits? 2. Performance drops like a bomb when K (the number of items retrieved) increases. So it kind of works to get the top 15 items... A twitter stream could have 500 items easy per update (on my iphone every few hours). -- View this message in context: http://neo4j-community-discussions.438527.n3.nabble.com/Activity-Streams-and-Twitter-Sample-App-tp3477669p3526543.html Sent from the Neo4j Community Discussions mailing list archive at Nabble.com. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- -- mobile: +49 (0)176 6433 2481 Skype: +49 (0)6131 / 4958926 Skype: rene.pickhardt www.rene-pickhardt.de http://www.beijing-china-blog.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Open Data Sets?
I recently made a blog article on a data source for 119 network graphs. http://www.rene-pickhardt.de/download-network-graph-data-sets-from-konect-the-koblenz-network-colection/ I also post new data sets in the dataset category of my blog: http://www.rene-pickhardt.de/cat/data/data-sets/ Have fun. Soon i will make available a social network graph extracted from wikipedia. Am 29.09.2011 00:09 schrieb McKinley mckinley1...@gmail.com: I want to create some demos of relational database extraction into Neo4j but I cannot share the data I use with the public. I know there are several resources for open data sets on the net, but has anyone on the list already found a nice, large data set that you are happy with? Thanks, McKinley ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] InvalidRecordException: Record[1983624] not in useRecord[1983624] not in use
hey everyone
I got a strange error message that a record is not in use if I call
hasRelationship() function even though I checked against null before! My
real purpose was to start the traverser but it exited with the same error
message. That is why I put the n.hasRelationship which also would not work.
I imported a graph with 50 mio. nodes and about the same size of
relationships. (though I am about to import more relationships later on) I
put 2 mio. nodes in a lucence index called article.
the counting variable t has the value 2385 (so the first 2385 calls work
fine) if I skip this node the same problem accoures again at t = 3239.
maybe it is usefull to say that I inserted the graph using the batch
inserter.
IndexHitsNode res = article.get(key, values[0]);
if (res!=null){
Node n = res.getSingle();
if (n!=null){
if (n.hasRelationship(DynamicRelationshipType.withName( UPDATE ),
Direction.BOTH)){
//n.traverse(Order.BREADTH_FIRST,StopEvaluator.DEPTH_ONE,
ReturnableEvaluator.ALL_BUT_START_NODE,DynamicRelationshipType.withName(
UPDATE ) );
t++;
}
}
callstack:
org.neo4j.kernel.impl.nioneo.store.InvalidRecordException: Record[1983624]
not in useRecord[1983624] not in use
at
org.neo4j.kernel.impl.nioneo.store.RelationshipStore.getRecord(RelationshipStore.java:230)
at
org.neo4j.kernel.impl.nioneo.store.RelationshipStore.getChainRecord(RelationshipStore.java:337)
at
org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.getMoreRelationships(ReadTransaction.java:114)
at
org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.getMoreRelationships(ReadTransaction.java:97)
at
org.neo4j.kernel.impl.persistence.PersistenceManager.getMoreRelationships(PersistenceManager.java:108)
at
org.neo4j.kernel.impl.core.NodeManager.getMoreRelationships(NodeManager.java:603)
at
org.neo4j.kernel.impl.core.NodeImpl.getMoreRelationships(NodeImpl.java:351)
at
org.neo4j.kernel.impl.core.NodeImpl.loadInitialRelationships(NodeImpl.java:318)
at
org.neo4j.kernel.impl.core.NodeImpl.ensureRelationshipMapNotNull(NodeImpl.java:305)
at
org.neo4j.kernel.impl.core.NodeImpl.getAllRelationshipsOfType(NodeImpl.java:156)
at org.neo4j.kernel.impl.core.NodeImpl.getRelationships(NodeImpl.java:236)
at org.neo4j.kernel.impl.core.NodeImpl.hasRelationship(NodeImpl.java:576)
at org.neo4j.kernel.impl.core.NodeProxy.hasRelationship(NodeProxy.java:109)
at IndexEvaluation.GenerateStreams(IndexEvaluation.java:124)
at IndexEvaluation.init(IndexEvaluation.java:98)
at EntryPoint.main(EntryPoint.java:20)
--
--
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Re: [Neo4j] InvalidRecordException: Record[1983624] not in useRecord[1983624] not in use
Neo1.4.M04 community edition no self build.
2011/9/28 Mattias Persson matt...@neotechnology.com
Which version of neo4j did you use to import your data, was it a
downloadable package, from maven or building yourself from a branch?
2011/9/28 René Pickhardt r.pickha...@googlemail.com
hey everyone
I got a strange error message that a record is not in use if I call
hasRelationship() function even though I checked against null before! My
real purpose was to start the traverser but it exited with the same error
message. That is why I put the n.hasRelationship which also would not
work.
I imported a graph with 50 mio. nodes and about the same size of
relationships. (though I am about to import more relationships later on)
I
put 2 mio. nodes in a lucence index called article.
the counting variable t has the value 2385 (so the first 2385 calls work
fine) if I skip this node the same problem accoures again at t = 3239.
maybe it is usefull to say that I inserted the graph using the batch
inserter.
IndexHitsNode res = article.get(key, values[0]);
if (res!=null){
Node n = res.getSingle();
if (n!=null){
if (n.hasRelationship(DynamicRelationshipType.withName( UPDATE ),
Direction.BOTH)){
//n.traverse(Order.BREADTH_FIRST,StopEvaluator.DEPTH_ONE,
ReturnableEvaluator.ALL_BUT_START_NODE,DynamicRelationshipType.withName(
UPDATE ) );
t++;
}
}
callstack:
org.neo4j.kernel.impl.nioneo.store.InvalidRecordException:
Record[1983624]
not in useRecord[1983624] not in use
at
org.neo4j.kernel.impl.nioneo.store.RelationshipStore.getRecord(RelationshipStore.java:230)
at
org.neo4j.kernel.impl.nioneo.store.RelationshipStore.getChainRecord(RelationshipStore.java:337)
at
org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.getMoreRelationships(ReadTransaction.java:114)
at
org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.getMoreRelationships(ReadTransaction.java:97)
at
org.neo4j.kernel.impl.persistence.PersistenceManager.getMoreRelationships(PersistenceManager.java:108)
at
org.neo4j.kernel.impl.core.NodeManager.getMoreRelationships(NodeManager.java:603)
at
org.neo4j.kernel.impl.core.NodeImpl.getMoreRelationships(NodeImpl.java:351)
at
org.neo4j.kernel.impl.core.NodeImpl.loadInitialRelationships(NodeImpl.java:318)
at
org.neo4j.kernel.impl.core.NodeImpl.ensureRelationshipMapNotNull(NodeImpl.java:305)
at
org.neo4j.kernel.impl.core.NodeImpl.getAllRelationshipsOfType(NodeImpl.java:156)
at
org.neo4j.kernel.impl.core.NodeImpl.getRelationships(NodeImpl.java:236)
at
org.neo4j.kernel.impl.core.NodeImpl.hasRelationship(NodeImpl.java:576)
at
org.neo4j.kernel.impl.core.NodeProxy.hasRelationship(NodeProxy.java:109)
at IndexEvaluation.GenerateStreams(IndexEvaluation.java:124)
at IndexEvaluation.init(IndexEvaluation.java:98)
at EntryPoint.main(EntryPoint.java:20)
--
--
mobile: +49 (0)176 6433 2481
Skype: +49 (0)6131 / 4958926
Skype: rene.pickhardt
www.rene-pickhardt.de
http://www.beijing-china-blog.com
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--
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Hacker, Neo Technology
www.neotechnology.com
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Re: [Neo4j] InvalidRecordException: Record[1983624] not in useRecord[1983624] not in use
Hey guys,
I don't know how I found the old milestone. I was downloading it once I
started using neo4j.
I will just migrate to the current stable version and tell you afterwards if
I still have problems. by your comments I guess the problem will be solved.
Thanks so far!
best regards René
2011/9/28 Mattias Persson matt...@neotechnology.com
I'm curious to know how you found that old milestone also :) you picked the
one out of extremely few having some kind of data problems.
Den onsdagen den 28:e september 2011 skrev Chris Gioran
chris.gio...@neotechnology.com:
Hi Rene,
According to git log, 1,4.M04 was tagged 10/06/2011, while the fix for
a bug in the BatchInserterImpl that caused corrupted stores which gave
the message you are seeing is
https://github.com/neo4j/community/commit/71fbe4ac1174fad16a7bb154c9f78d3f1b377248
which has a date of 04/07/2011.
This makes 1.4.M06 the earliest release to use that does not have this
issue or, even better, go for 1.4.1 which is the latest stable
release. Since you are comfortable using milestones, 1.5.M01 might be
of interest to you.
http://neo4j.org/download has the links that you need.
hope that helped,
CG
2011/9/28 René Pickhardt r.pickha...@googlemail.com:
Neo1.4.M04 community edition no self build.
2011/9/28 Mattias Persson matt...@neotechnology.com
Which version of neo4j did you use to import your data, was it a
downloadable package, from maven or building yourself from a branch?
2011/9/28 René Pickhardt r.pickha...@googlemail.com
hey everyone
I got a strange error message that a record is not in use if I call
hasRelationship() function even though I checked against null before!
My
real purpose was to start the traverser but it exited with the same
error
message. That is why I put the n.hasRelationship which also would not
work.
I imported a graph with 50 mio. nodes and about the same size of
relationships. (though I am about to import more relationships later
on)
I
put 2 mio. nodes in a lucence index called article.
the counting variable t has the value 2385 (so the first 2385 calls
work
fine) if I skip this node the same problem accoures again at t =
3239.
maybe it is usefull to say that I inserted the graph using the batch
inserter.
IndexHitsNode res = article.get(key, values[0]);
if (res!=null){
Node n = res.getSingle();
if (n!=null){
if (n.hasRelationship(DynamicRelationshipType.withName( UPDATE ),
Direction.BOTH)){
//n.traverse(Order.BREADTH_FIRST,StopEvaluator.DEPTH_ONE,
ReturnableEvaluator.ALL_BUT_START_NODE,DynamicRelationshipType.withName(
UPDATE ) );
t++;
}
}
callstack:
org.neo4j.kernel.impl.nioneo.store.InvalidRecordException:
Record[1983624]
not in useRecord[1983624] not in use
at
org.neo4j.kernel.impl.nioneo.store.RelationshipStore.getRecord(RelationshipStore.java:230)
at
org.neo4j.kernel.impl.nioneo.store.RelationshipStore.getChainRecord(RelationshipStore.java:337)
at
org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.getMoreRelationships(ReadTransaction.java:114)
at
org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.getMoreRelationships(ReadTransaction.java:97)
at
org.neo4j.kernel.impl.persistence.PersistenceManager.getMoreRelationships(PersistenceManager.java:108)
at
org.neo4j.kernel.impl.core.NodeManager.getMoreRelationships(NodeManager.java:603)
at
org.neo4j.kernel.impl.core.NodeImpl.getMoreRelationships(NodeImpl.java:351)
at
org.neo4j.kernel.impl.core.NodeImpl.loadInitialRelationships(NodeImpl.java:318)
at
org.neo4j.kernel.impl.core.NodeImpl.ensureRelationshipMapNotNull(NodeImpl.java:305)
at
org.neo4j.kernel.impl.core.NodeImpl.getAllRelationshipsOfType(NodeImpl.java:156)
at
org.neo4j.kernel.impl.core.NodeImpl.getRelationships(NodeImpl.java:236)
at
org.neo4j.kernel.impl.core.NodeImpl.hasRelationship(NodeImpl.java:576)
at
org.neo4j.kernel.impl.core.NodeProxy.hasRelationship(NodeProxy.java:109)
at IndexEvaluation.GenerateStreams(IndexEvaluation.java:124)
at IndexEvaluation.init(IndexEvaluation.java:98)
at EntryPoint.main(EntryPoint.
--
Mattias Persson, [matt...@neotechnology.com]
Hacker, Neo Technology
www.neotechnology.com
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Re: [Neo4j] InvalidRecordException: Record[1983624] not in useRecord[1983624] not in use
I used the current stable release and the problem did not arise anymore but
I got new problems.
for many nodes even though (according to the data set they should have
relations) the
function (n.hasRelationship(DynamicRelationshipType.withName( UPDATE ),
Direction.BOTH)) does not stop. It just seems to jump into an endless loop
;(
I don't think I made a mistake in the code for the batch inserter but i just
attached it. My insertion contains of two steps:
first I create many node in the graph and store them also in an index:
batchArticle. I do not query agains the index to check if a node with this
key already existed. But my keys are unique.
private void AddBatchNode(String key, String title){
MapString,Object properties = new HashMapString,Object();
properties.put( key, key );
properties.put( title, title );
properties.put( timestamp, 1 );
long node = inserter.createNode( properties );
properties = MapUtil.map( key, key );
batchArticle.add( node, properties );
}
then I attach many updates (also nodes encoded via timestamp) to every node
and connect them via a relationship.
private void BatchUpdate(String timestamp, String key) {
if (batchArticle.get(key, key).getSingle()!=null){
long node = batchArticle.get(key, key).getSingle();
MapString,Object properties = new HashMapString,Object();
properties.put( timestamp, timestamp );
long ci = inserter.createNode( properties );
inserter.createRelationship( node, ci, DynamicRelationshipType.withName(
UPDATE ),null);
}
}
the last step (i did not implement this) is to connect the nodes from the
first steps via friendship relations. But I wanted to do some testing
first...
anyone knows of this problem?
2011/9/28 Rick Bullotta rick.bullo...@thingworx.com
Hi, René.
I recognized your error almost immediately, since we encountered it in an
early 1.4 beta. ;-)
I think you'll have a good result if you can switch to the 1.4.1 release!
Best,
Rick
-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org]
On Behalf Of René Pickhardt
Sent: Wednesday, September 28, 2011 10:29 AM
To: Neo4j user discussions
Subject: Re: [Neo4j] InvalidRecordException: Record[1983624] not in
useRecord[1983624] not in use
Hey guys,
I don't know how I found the old milestone. I was downloading it once I
started using neo4j.
I will just migrate to the current stable version and tell you afterwards
if
I still have problems. by your comments I guess the problem will be solved.
Thanks so far!
best regards René
2011/9/28 Mattias Persson matt...@neotechnology.com
I'm curious to know how you found that old milestone also :) you picked
the
one out of extremely few having some kind of data problems.
Den onsdagen den 28:e september 2011 skrev Chris Gioran
chris.gio...@neotechnology.com:
Hi Rene,
According to git log, 1,4.M04 was tagged 10/06/2011, while the fix for
a bug in the BatchInserterImpl that caused corrupted stores which gave
the message you are seeing is
https://github.com/neo4j/community/commit/71fbe4ac1174fad16a7bb154c9f78d3f1b377248
which has a date of 04/07/2011.
This makes 1.4.M06 the earliest release to use that does not have this
issue or, even better, go for 1.4.1 which is the latest stable
release. Since you are comfortable using milestones, 1.5.M01 might be
of interest to you.
http://neo4j.org/download has the links that you need.
hope that helped,
CG
2011/9/28 René Pickhardt r.pickha...@googlemail.com:
Neo1.4.M04 community edition no self build.
2011/9/28 Mattias Persson matt...@neotechnology.com
Which version of neo4j did you use to import your data, was it a
downloadable package, from maven or building yourself from a branch?
2011/9/28 René Pickhardt r.pickha...@googlemail.com
hey everyone
I got a strange error message that a record is not in use if I call
hasRelationship() function even though I checked against null
before!
My
real purpose was to start the traverser but it exited with the same
error
message. That is why I put the n.hasRelationship which also would
not
work.
I imported a graph with 50 mio. nodes and about the same size of
relationships. (though I am about to import more relationships
later
on)
I
put 2 mio. nodes in a lucence index called article.
the counting variable t has the value 2385 (so the first 2385 calls
work
fine) if I skip this node the same problem accoures again at t =
3239.
maybe it is usefull to say that I inserted the graph using the
batch
inserter.
IndexHitsNode res = article.get(key, values[0]);
if (res!=null){
Node n = res.getSingle();
if (n!=null){
if (n.hasRelationship(DynamicRelationshipType.withName( UPDATE ),
Direction.BOTH)){
//n.traverse(Order.BREADTH_FIRST,StopEvaluator.DEPTH_ONE,
ReturnableEvaluator.ALL_BUT_START_NODE
[Neo4j] Another test showing neo4j is 377 faster than MySQL for social newsstreams
Hello everyone, I just added another post on my Blog showing how neo4j outperformed mySQL by a factor of 377 for a social news stream application. http://www.rene-pickhardt.de/time-lines-and-news-streams-neo4j-is-377-times-faster-than-mysql/ Feedback especially on my open questions about sorting of timelines and graph design is very appreciated. best regards René -- -- mobile: +49 (0)176 6433 2481 Skype: +49 (0)6131 / 4958926 Skype: rene.pickhardt www.rene-pickhardt.de http://www.beijing-china-blog.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] graph db as ontology
Just in case someone intends to give a private answer. I would also be very interested in an answer to this question. 2011/6/29 Aliabbas Petiwala aliabba...@gmail.com the graph db can itself be viewed as an ontology because rdf for example is independent of syntax it just represents information model. so can the petas teras of ontology classes in freebase, dbpedia etc imported into the graph db?. how well it would scale compared to infinitegraph and orientdb -- Aliabbas Petiwala M.Tech CSE ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- -- mobile: +49 (0)176 6433 2481 Skype: +49 (0)6131 / 4958926 Skype: rene.pickhardt www.rene-pickhardt.de http://www.beijing-china-blog.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] New to graph databases
Hey Jim, I would like to know why you suggest to make relations more explicit. In the redisign of our social network we are exchanging our old mysql db to neo4j. One part of our datamodel is for User Nodes. In order to make better friend recommendations on the longterm we try to store as many relations between usernodes as possible. We hope to be able to predict strong ties. Especially we have the following relationships between user nodes (and some others...) - UserUserFriendrequest - UserUserFriend - UserUserMessage - UserUserProfilevisited our goal was to have all those relations timestampt the UserUserMessage Relation should also contain 2 Key / Value pairs. - (subject,any subject...) - (text,any text) To me it seems that in your usecase with a special Mail-Node we cannot so quickly spot a connection between two users. What are the disadvanteges of our way to model it? Thanks for your feedback! Best Regards René 2011/6/27 Jim Webber j...@neotechnology.com Hi Stefan, These are good points, and I don't think we have yet reached a mature level of best practice as the relational folks have. But I don't think graph modelling is too hard. I have a couple of rules of thumb: 1. Model entities as entities and use relationships to describe how those entities are related, don't be tempted to do anything more than basic facts - the aggregate of all those basic facts is sophisticated knowledge. 2. If you find your relationships have names like SENT_EMAIL_TO then you're missing an entity (in this case an email entity, naturally). So instead of Alice --SENT_EMAIL_TO--Bob Alice--CC_EMAIL_TO--Charles Use Alice--SENT--A specific email node Bob--TO--A specific email node Charles--CC--A specific email node That is, always look for places where you've hidden useful entities within relationships. FWIW Ian Robinson and I are doing the rounds doing a Neo4j tutorial that covers some of this kind of design material. Hop on one of those courses if you can. Otherwise the tutorial material is freely available here: https://github.com/jimwebber/neo4j-tutorial Jim ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- -- mobile: +49 (0)176 6433 2481 Skype: +49 (0)6131 / 4958926 Skype: rene.pickhardt www.rene-pickhardt.de http://www.beijing-china-blog.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Gwt + eclipse + Neo4j screencast + testings
Hey Thomas, thank you for your advice! I was reading the discussion with John and already aware of the fact that this is the way to go. I already implemented it and of course it is running much faster (-: I hope you don't mind if I include this peace of work in an upcomming blogpost in which I will also share a very basic gwt + neo4j application. greetz René 2011/5/12 Thomas Baum thomas.b...@neopersistence.com hej rene, Right now I would be happy about some best practices to design a software backend using neo4j. You know in MySQL it is kind of straight forward how to build software around the data base. In neo4j a new way of thinking starts. I haven't really looked for it yet. But i guess there won't be anything out there anyway. for a web-context it its is better start the embedded graph-db only once. in your screencast you will do this every request. please try using a context-listener to start / shutdown the embedded db in a clean way. so the access-times in the gwt-servlet will really rock! http://www.mail-archive.com/user@lists.neo4j.org/msg08350.html cheers /thomas I was a little confused that there was a wiki and the other docs but that didn't really bother me. most the time I use google to search for resources anyway. Best regards René 2011/5/9 Peter Neubauer peter.neuba...@neotechnology.com Rene, if you don't mind asking - what are the most valuable docs for you? We are trying to migrate from the wiki.neo4j.org to the generated and tested code snippets and edited documentation at docs.neo4j.org - it would be great to see what users find valuable to keep improving on to get started with Neo4j! Cheers, /peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 LinkedIn http://www.linkedin.com/in/neubauer Twitter http://twitter.com/peterneubauer http://www.neo4j.org - Your high performance graph database. http://startupbootcamp.org/- Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. 2011/5/9 René Pickhardt r.pickha...@googlemail.com Hey Peter, Since I want to redesign the backend of my social networking site for my PhD thesis and I am almost convinced that Neo4j is the way to go I will most certainly work with your graph data base over the next couple months and get to know it better. Since you guys made it open source (great!) I will try to give something back by continuing to blog about it. Once I get to know neo4j better and really start migrating my current data base to it and running the social networking site with neo4j as a backend I am sure to be able to give you guys more valuable feedback. Besides many questions which I can only solve by reading the docs I am satisfied right now. In my very own interest I wish you guys good luck with neo4j and of course many paying customers (-: best regards René 2011/5/9 Peter Neubauer peter.neuba...@neotechnology.com You rock it Rene! Nice summary - please let us know how we can make your experience even more smooth and what you you think should be there for you to have an even better experience? Cheers, /peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 LinkedIn http://www.linkedin.com/in/neubauer Twitter http://twitter.com/peterneubauer http://www.neo4j.org - Your high performance graph database. http://startupbootcamp.org/- Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. 2011/5/9 René Pickhardt r.pickha...@googlemail.com Hey everyone, Peter asked me to post this to the list. So here you go: Screencast explaining how to set up neo4j in eclipse and GWT: http://www.rene-pickhardt.de/how-to-combine-neo4j-with-gwt-and-eclipse/ A short blog article with a sum up of my first testing on using neo4j on the friendship graph (and some other edges between users) from the social networking site I run (~300'000 Edges): http://www.rene-pickhardt.de/neo4j-graph-database-vs-mysql/ Thanks to neotechnology for providing such a great tool! Regards René -- **www.twitter.com/renepickhardt Skype: rene.pickhardt www.rene-pickhardt.de http://www.beijing-china-blog.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- *Das Debütalbum meiner Band IN LEGEND erscheint am 20.5.2010! Video gucken http://www.youtube.com/watch?v=aLesGMA0-rM und bei AMAZON vorbestellen http://goo.gl/3H0Fm (Danke
[Neo4j] Gwt + eclipse + Neo4j screencast + testings
Hey everyone, Peter asked me to post this to the list. So here you go: Screencast explaining how to set up neo4j in eclipse and GWT: http://www.rene-pickhardt.de/how-to-combine-neo4j-with-gwt-and-eclipse/ A short blog article with a sum up of my first testing on using neo4j on the friendship graph (and some other edges between users) from the social networking site I run (~300'000 Edges): http://www.rene-pickhardt.de/neo4j-graph-database-vs-mysql/ Thanks to neotechnology for providing such a great tool! Regards René -- **www.twitter.com/renepickhardt Skype: rene.pickhardt www.rene-pickhardt.de http://www.beijing-china-blog.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Gwt + eclipse + Neo4j screencast + testings
I was very happy about http://neo4j.org/get?file=neo4j-manual-stable.pdf. I hate reading on a computer screen and the possability to print it out was really helpful. Anyway it gave me a nice overview on what is possible with neo4j. As said before I think I can give you better Feedback once I really start implementing a live system because then I will need to work with your docs much more intensive. Right now I would be happy about some best practices to design a software backend using neo4j. You know in MySQL it is kind of straight forward how to build software around the data base. In neo4j a new way of thinking starts. I haven't really looked for it yet. But i guess there won't be anything out there anyway. I was a little confused that there was a wiki and the other docs but that didn't really bother me. most the time I use google to search for resources anyway. Best regards René 2011/5/9 Peter Neubauer peter.neuba...@neotechnology.com Rene, if you don't mind asking - what are the most valuable docs for you? We are trying to migrate from the wiki.neo4j.org to the generated and tested code snippets and edited documentation at docs.neo4j.org - it would be great to see what users find valuable to keep improving on to get started with Neo4j! Cheers, /peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 LinkedIn http://www.linkedin.com/in/neubauer Twitter http://twitter.com/peterneubauer http://www.neo4j.org - Your high performance graph database. http://startupbootcamp.org/- Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. 2011/5/9 René Pickhardt r.pickha...@googlemail.com Hey Peter, Since I want to redesign the backend of my social networking site for my PhD thesis and I am almost convinced that Neo4j is the way to go I will most certainly work with your graph data base over the next couple months and get to know it better. Since you guys made it open source (great!) I will try to give something back by continuing to blog about it. Once I get to know neo4j better and really start migrating my current data base to it and running the social networking site with neo4j as a backend I am sure to be able to give you guys more valuable feedback. Besides many questions which I can only solve by reading the docs I am satisfied right now. In my very own interest I wish you guys good luck with neo4j and of course many paying customers (-: best regards René 2011/5/9 Peter Neubauer peter.neuba...@neotechnology.com You rock it Rene! Nice summary - please let us know how we can make your experience even more smooth and what you you think should be there for you to have an even better experience? Cheers, /peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 LinkedIn http://www.linkedin.com/in/neubauer Twitter http://twitter.com/peterneubauer http://www.neo4j.org - Your high performance graph database. http://startupbootcamp.org/- Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. 2011/5/9 René Pickhardt r.pickha...@googlemail.com Hey everyone, Peter asked me to post this to the list. So here you go: Screencast explaining how to set up neo4j in eclipse and GWT: http://www.rene-pickhardt.de/how-to-combine-neo4j-with-gwt-and-eclipse/ A short blog article with a sum up of my first testing on using neo4j on the friendship graph (and some other edges between users) from the social networking site I run (~300'000 Edges): http://www.rene-pickhardt.de/neo4j-graph-database-vs-mysql/ Thanks to neotechnology for providing such a great tool! Regards René -- **www.twitter.com/renepickhardt Skype: rene.pickhardt www.rene-pickhardt.de http://www.beijing-china-blog.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- *Das Debütalbum meiner Band IN LEGEND erscheint am 20.5.2010! Video gucken http://www.youtube.com/watch?v=aLesGMA0-rM und bei AMAZON vorbestellen http://goo.gl/3H0Fm (Danke!) * -- mobile: +49 (0)176 6433 2481 Skype: +49 (0)6131 / 4958926 Skype: rene.pickhardt www.rene-pickhardt.de http://www.beijing-china-blog.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- *Das Debütalbum meiner Band IN LEGEND erscheint am 20.5.2010! Video gucken http://www.youtube.com/watch?v=aLesGMA0-rM und bei AMAZON
[Neo4j] inlcuding neo4j as an embedded Graphdatabase to a GWT project in eclipse
Hey there, I am totaly new to Neo4j and I got it running in Eclipse using Maven and I was very impressed by its speed on traversing my data sets. I am planning to use neo4j as the core technology for the relaunch of my so far mysql based social network which builds the foundation of my PhD thesis. But for the last hours I tried to get neo4j running in GWT without maven and I failed all the time. I included the neo4j libs in the buildpath. When I want to create an GraphDatabase Service object like this GraphDatabaseService graphDb = new EmbeddedGraphDatabase( var/graphdb ); Eclipse tells me to include the proper packages so I added: import org.neo4j.graphdb.GraphDatabaseService; import org.neo4j.kernel.EmbeddedGraphDatabase; now I can compile and run the project. Unfortunatly the function call to the function in which I create graphDB does not work. After some googleing I figured out that I have to include the classes to the MyProjectsName.gwt.xml file which i did by adding: inherits name='org.neo4j.graphdb.GraphDatabaseService' / inherits name='org.neo4j.kernel.EmbeddedGraphDatabase' / to the xml files. but now the Project won't even compile I receive the following error message: ... de.metalcon.connectneo4j.Connectneo4j Loading inherited module 'org.neo4j.graphdb.GraphDatabaseService' [ERROR] Unable to find 'org/neo4j/graphdb/GraphDatabaseService.gwt.xml' on your classpath; could be a typo, or maybe you forgot to include a classpath entry for source? [ERROR] Line 5: Unexpected exception while processing element 'inherits' ... from what i understand this is kind of obvious. neo4j wasn't compiled with GWT in mind. Also i am thinking that it doesn't make sense to compile all the neo4j libs to client side javascript with GWT. The neo4j calls should all be serversided anyway. Has anyone experience with GWT, eclipse and neo4j and knows how this issue can be resolved? the only other way I see is to use neo4j as a standalone server and acess it using the REST api in GWT but I am not to happy about this solution. Thanks a lot! best regards René -- *Das Debütalbum meiner Band IN LEGEND erscheint am 20.5.2010! Video gucken http://www.youtube.com/watch?v=aLesGMA0-rM und bei AMAZON vorbestellen http://goo.gl/3H0Fm (Danke!) * -- mobile: +49 (0)176 6433 2481 Skype: +49 (0)6131 / 4958926 Skype: rene.pickhardt www.rene-pickhardt.de http://www.beijing-china-blog.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
