[Neo4j] Representing Text
I have been researching a problems and trying to figure out how suitable Neo 4J would be to solve it. The problem is the representation of legal documents. The reason for considering Neo 4J is that the citations within court opinions form directed graphs. A citation from one document to another forms a relationship. That relationship can be refined by giving a legal issue (A cites B for C)---in fact the issues could be represented by a graph as well. The process of legal research usually starts with text searching. After identifying matches, the research process switches to network analysis. If X is found to be match for research purposes through searching, the set of documents that cite X or are cited by X are likely to contain matches as well. Currently, network analysis is done manually and is very tedious. A single court opinion usually has many citations for a number of different issues. That part of the problem appears to match Neo4j well. The part that I am not certain about is handling the textual nature of the source. A document needs to be text searchable. A document can be huge (some, thousands of pages). A court opinion can range from one word (Affirmed.) to tens of pages. A document is more than plain text. It will include formatting. The document may include figures or tables. The document needs to be exportable (e.g., conversion to Word) The document may have layers of metadata. For example, one might one to identify judges referenced in the text. A citation relationship is from a specific point in the text of one document to a specific point in another document (e.g., page, paragraph, section--possibly a sentence could be identified). The current trend is to us XML for this kind of representation but, IMHO, this is not an effective solution. My question then is how effective would Neo4J be for this kind of problem. How might one approach storing large bodies of text? I know this is a large question (and would get spiked on SO). Maybe there is something to point to. I guess you could call this large document representation in Neo 4J. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Neo4j] batch-import and database errors
Hi Michael, I'm having the exact same issue and I can open it with a neo4j 2.0.3 database, wondering if you had any other solutions? Thanks, Ryan. On Saturday, June 21, 2014 10:40:26 AM UTC+1, Michael Hunger wrote: Can you open it with a neo4j 2.0.3 database, neo4j-shell and get it to cleanly shut down? Sent from mobile device Am 21.06.2014 um 02:41 schrieb assaf...@gmail.com javascript:: Hello Michael, Thanks for the quick reply. On Friday, June 20, 2014 8:23:52 PM UTC-4, Michael Hunger wrote: The batch-importer generates databases for Neo4j 2.0 You have to set the upgrade flag allow_store_upgrade=true in conf/neo4j.properties I tried enabling this property, but the server still fails to start. Here's what I've tried: === # Stopping the server $ ./bin/neo4j stop # Removing existing 'graph.db' $ rm -rf ./data/graph.db # Copying the sample db from 'bacth-import' $ cp -r /data/gordon/sources/batch-import/target/graph.db ./data/ # Verify the upgrade propery $ grep upgrade conf/* conf/neo4j.properties:# Enable this to be able to upgrade a store from an older version conf/neo4j.properties:allow_store_upgrade=true # Start the server $ ./bin/neo4j start WARNING: Max 1024 open files allowed, minimum of 40 000 recommended. See the Neo4j manual. Using additional JVM arguments: -server -XX:+DisableExplicitGC -Dorg.neo4j.server.properties=conf/neo4j-server.properties -Djava.util.logging.config.file=conf/logging.properties -Dlog4j.configuration=file:conf/log4j.properties -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled Starting Neo4j Server...WARNING: not changing user process [10342]... waiting for server to be ready... Failed to start within 120 seconds. Neo4j Server may have failed to start, please check the logs. === The 'console.log' still says: Detected incorrectly shut down database, performing recovery.. But 'data./graph.db/message.log' has this to say: === $ tail ./data/graph.db/messages.log Caused by: org.neo4j.kernel.impl.storemigration.StoreUpgrader$UnexpectedUpgradingStoreVersionException: 'neostore.nodestore.db' has a store version number that we cannot upgrade from. Expected 'NodeStore v0.A.1' but file is version 'NodeStore v0.A.0'. at org.neo4j.kernel.impl.storemigration.UpgradableDatabase.checkUpgradeable(UpgradableDatabase.java:69) ~[neo4j-kernel-2.1.2.jar:2.1.2] at org.neo4j.kernel.impl.storemigration.StoreMigrator.needsMigration(StoreMigrator.java:100) ~[neo4j-kernel-2.1.2.jar:2.1.2] at org.neo4j.kernel.impl.storemigration.StoreUpgrader.getParticipantsEagerToMigrate(StoreUpgrader.java:234) ~[neo4j-kernel-2.1.2.jar:2.1.2] at org.neo4j.kernel.impl.storemigration.StoreUpgrader.migrateIfNeeded(StoreUpgrader.java:129) ~[neo4j-kernel-2.1.2.jar:2.1.2] at org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaDataSource.start(NeoStoreXaDataSource.java:350) ~[neo4j-kernel-2.1.2.jar:2.1.2] at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:507) ~[neo4j-kernel-2.1.2.jar:2.1.2] ... 13 common frames omitted === Any ideas how to fix it ? Thanks! -gordon -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+un...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[Neo4j] profiling neo4j hardware performance
Hi, I would like to profile the neo4j hardware performance, but I need suggestions in how to run set the framework up. As I understand, I can write python/neo4j-shell script that access the database. However, I think this is just from the client side, which is not the performance data I'm interested in. I don't quite know what I should do if I want to get server side performance data (such as cache miss rate)? Specificly, the tool I'm trying to attach neo4j with is intel's Pin tool. And if I could just write a python script so that I can attach Pin with to obtain the server result would be ideal. Thanks a lot! Best Wishes, Jer -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[Neo4j] Neo4j cypher compiler for Scala 2.11 - dependency on parboiled-scala_2_10
Hello
I am using Neo4j database in my Scala application and I encountered a
problem with updating to Scala 2.11.1.
After changing Scala version in my sbt build files I got the message that:
[error] Modules were resolved with conflicting cross-version suffixes in
{file:somePathTo}SomeProject:
[error]org.parboiled:parboiled-scala _2.11, _2.10
java.lang.RuntimeException: Conflicting cross-version suffixes in:
org.parboiled:parboiled-scala
at scala.sys.package$.error(package.scala:27)
at sbt.ConflictWarning$.processCrossVersioned(ConflictWarning.scala:47)
at sbt.ConflictWarning$.apply(ConflictWarning.scala:30)
at sbt.Classpaths$$anonfun$60.apply(Defaults.scala:1090)
at sbt.Classpaths$$anonfun$60.apply(Defaults.scala:1090)
at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:42)
at sbt.std.Transform$$anon$4.work(System.scala:64)
at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)
at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)
at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)
at sbt.Execute.work(Execute.scala:244)
at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)
at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)
at
sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:160)
at sbt.CompletionService$$anon$2.call(CompletionService.scala:30)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
[error] (*:update) Conflicting cross-version suffixes in:
org.parboiled:parboiled-scala
At first I was thinking it is because on my dependency on Spray
http://spray.io/which also uses parboiled so I asked the question on
their user list:
https://groups.google.com/forum/#!topic/spray-user/XY7ceh7a9t0 where I got
a suggestion to compute dependency tree for my project.
I discovered that neo4j-cypher-compiler depends on parboiled-scala_2.10
http://mvnrepository.com/artifact/org.parboiled/parboiled-scala_2.10 which
is causing the problem. Are there any plans to release version that
supports Scala 2.11?
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[Neo4j] What are the plans for mixed-type arrays
Hello! I was just wondering what, if any, plans there are in regard to mixed-type arrays for properties. Thanks! -Jason -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[Neo4j] Re: Cant see data browser's graphical view mode in web admin
Same here, I have the same problem. I cannot visualise a query in the webadmin, although I can do it in the browser. On Wednesday, June 4, 2014 10:08:03 AM UTC+1, anand wrote: I seem to have the same problem. I am new to Neo4j and have installed Neo4j2.1.1 binary version on windows 7. I have created few nodes I can see them as a list in webadmin data browser but cannot visualise them. As long as the node count is below 1000 nodes I can visualise all of them on localhost:7474/browser but not in webadmin data browser. Also as suggested in one of the posts above I am able to visualise a single node after clicking it from nodes list.. but I do need to visualise all nodes. The fact that I will probably end up creating more then 10m nodes being able to visualise the nodes and their relationships will be really good... On the developer debugging console i see below errors Failed to load resource: the server responded with a status of 400 (Bad Request) http://localhost:7474/db/manage/server/console/ 3Uncaught TypeError: Cannot read property 'node' of null Renderer.js:238 2 1. Uncaught TypeError: Cannot read property 'node' of null Renderer.js:238 Failed to load resource: the server responded with a status of 404 (Not Found) http://localhost:7474/db/data/index/node/crmd_orderadm_h?_=1401870557436query=key%3A* 3 1. Uncaught TypeError: Cannot read property 'node' of null Renderer.js:238 Failed to load resource: the server responded with a status of 404 (Not Found) http://localhost:7474/db/data/node/2?_=1401872307429 any help will be greatly appreciated. Thanks, Anand On Wednesday, November 14, 2012 1:20:41 PM UTC, Nirmal Singh wrote: Hi Everyone, I could not see graphical view of my nodes (few days ago I could see it). Can anyone help me with that. https://lh6.googleusercontent.com/-GE-CiJVxmQs/UKOagI72T6I/ABU/jT5bSiOTf8s/s1600/Untitled.png Thanks, Nirmal -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Neo4j] Re: Cant see data browser's graphical view mode in web admin
Can you detail your browser, OS etc. What do you want to use the webadmin for? And could you check the javascript error console for any error messages? On Mon, Jul 7, 2014 at 4:31 PM, reardelt namjai...@gmail.com wrote: Same here, I have the same problem. I cannot visualise a query in the webadmin, although I can do it in the browser. On Wednesday, June 4, 2014 10:08:03 AM UTC+1, anand wrote: I seem to have the same problem. I am new to Neo4j and have installed Neo4j2.1.1 binary version on windows 7. I have created few nodes I can see them as a list in webadmin data browser but cannot visualise them. As long as the node count is below 1000 nodes I can visualise all of them on localhost:7474/browser but not in webadmin data browser. Also as suggested in one of the posts above I am able to visualise a single node after clicking it from nodes list.. but I do need to visualise all nodes. The fact that I will probably end up creating more then 10m nodes being able to visualise the nodes and their relationships will be really good... On the developer debugging console i see below errors Failed to load resource: the server responded with a status of 400 (Bad Request) http://localhost:7474/db/manage/server/console/ 3Uncaught TypeError: Cannot read property 'node' of null Renderer.js:238 2 1. Uncaught TypeError: Cannot read property 'node' of null Renderer.js:238 Failed to load resource: the server responded with a status of 404 (Not Found) http://localhost:7474/db/data/index/node/crmd_orderadm_h?_= 1401870557436query=key%3A* 3 1. Uncaught TypeError: Cannot read property 'node' of null Renderer.js:238 Failed to load resource: the server responded with a status of 404 (Not Found) http://localhost:7474/db/data/node/2?_=1401872307429 any help will be greatly appreciated. Thanks, Anand On Wednesday, November 14, 2012 1:20:41 PM UTC, Nirmal Singh wrote: Hi Everyone, I could not see graphical view of my nodes (few days ago I could see it). Can anyone help me with that. https://lh6.googleusercontent.com/-GE-CiJVxmQs/UKOagI72T6I/ABU/jT5bSiOTf8s/s1600/Untitled.png Thanks, Nirmal -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Neo4j] What are the plans for mixed-type arrays
There are no plans for that, rather for more complex data types at some point (maps, nested documents) but not in the close future. What do you want to do? Michael On Wed, Jul 9, 2014 at 7:13 PM, Jason Gillman Jr. mackdaddydie...@gmail.com wrote: Hello! I was just wondering what, if any, plans there are in regard to mixed-type arrays for properties. Thanks! -Jason -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Neo4j] neo4j cypher query too slow
This is a graph global query, with unlimited paths, so it might generate many billions or trillions of paths to look at. Esp. if you don't provide a direction. if your nodes are all users, then you do the equivalent of finding all paths between the cross product of 16M^2 Perhaps you can describe your actual use-case that you try to solve? Michael On Wed, Jul 9, 2014 at 4:23 PM, Guitao Ding dinggui...@baixing.com wrote: Hi all, I'm leaning to user neo4j for relation analysis recently. Today I found it took too long for my cypher query took to finish. I used the batch importer https://github.com/jexp/batch-import/tree/20 to import all data into neo4j. And I wanted to find the smallest user_id connected (directly or undirectly, path length no limit) to each user_id. Below is the details: neo4j version: 2.1.2 nodes num: 16M (three labels) relation num: 10M cypher query: match (n:user_id)-[:mapping*]-(d:user_id) with n.value as user_id, case when min(d.value) n.value then n.value else min(d.value) end as people_id return user_id, people_id What should I do to improve my query performance? Any suggestions would be appreciated! Thanks in advance. Guitao -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Neo4j] access permissions to users in neo4j
You really need to do this at the application layer. We currently restrict access to the server and to the group able to connect to it then run the rest api just on localhost. One idea you can tinker with is add a group property to certain nodes then restrict on those in your application. On Fri, Jul 4, 2014 at 9:15 AM, Suman Patil smnpatil1...@gmail.com wrote: How to give different level of permissions to different hierarchies of users?Example:if we want to allow a group of users to access only first 10 hierarchies of the graph and another set of users to access next 10 hierarchies of the graph and so on. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Alexander Frieden -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[Neo4j] Re: neo4j cypher query too slow
Hello Guitao, I think I'm having the same issue here: http://stackoverflow.com/questions/24620297/cypher-query-with-infinite-relationship-takes-forever Hopefully we can get an answer :) Good luck! On Wednesday, July 9, 2014 10:23:19 AM UTC-4, Guitao Ding wrote: Hi all, I'm leaning to user neo4j for relation analysis recently. Today I found it took too long for my cypher query took to finish. I used the batch importer https://github.com/jexp/batch-import/tree/20 to import all data into neo4j. And I wanted to find the smallest user_id connected (directly or undirectly, path length no limit) to each user_id. Below is the details: neo4j version: 2.1.2 nodes num: 16M (three labels) relation num: 10M cypher query: match (n:user_id)-[:mapping*]-(d:user_id) with n.value as user_id, case when min(d.value) n.value then n.value else min(d.value) end as people_id return user_id, people_id What should I do to improve my query performance? Any suggestions would be appreciated! Thanks in advance. Guitao -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Neo4j] profiling neo4j hardware performance
Jer, what is the actual performance use-case you want to test? Perhaps you can explain more about it, and also about the hardware you plan to run it on. You might want to look into the data exposed via jconsole (JMX) which also contains cache information (at least in the enterprise version). There are also some monitoring extensions but those are not publicly documented yet. Michael On Wed, Jul 9, 2014 at 4:02 AM, jer yinzhuo...@gmail.com wrote: Hi, I would like to profile the neo4j hardware performance, but I need suggestions in how to run set the framework up. As I understand, I can write python/neo4j-shell script that access the database. However, I think this is just from the client side, which is not the performance data I'm interested in. I don't quite know what I should do if I want to get server side performance data (such as cache miss rate)? Specificly, the tool I'm trying to attach neo4j with is intel's Pin tool. And if I could just write a python script so that I can attach Pin with to obtain the server result would be ideal. Thanks a lot! Best Wishes, Jer -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Neo4j] What are the plans for mixed-type arrays
Just to chime in, more complex types such as maps would be immensely valuable! Sent from my iPhone On Jul 9, 2014, at 17:46, Michael Hunger michael.hun...@neotechnology.com wrote: There are no plans for that, rather for more complex data types at some point (maps, nested documents) but not in the close future. What do you want to do? Michael On Wed, Jul 9, 2014 at 7:13 PM, Jason Gillman Jr. mackdaddydie...@gmail.com wrote: Hello! I was just wondering what, if any, plans there are in regard to mixed-type arrays for properties. Thanks! -Jason -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Neo4j] What are the plans for mixed-type arrays
On 7/9/2014 5:44 PM, Clark Richey wrote: Just to chime in, more complex types such as maps would be immensely valuable! Agreed. I absolutely require maps -- so I store mine in JSON. Unfortunately, I can't query them. But at least I have the data, and my software can process it. Sent from my iPhone On Jul 9, 2014, at 17:46, Michael Hunger michael.hun...@neotechnology.com mailto:michael.hun...@neotechnology.com wrote: There are no plans for that, rather for more complex data types at some point (maps, nested documents) but not in the close future. What do you want to do? Michael On Wed, Jul 9, 2014 at 7:13 PM, Jason Gillman Jr. mackdaddydie...@gmail.com mailto:mackdaddydie...@gmail.com wrote: Hello! I was just wondering what, if any, plans there are in regard to mixed-type arrays for properties. Thanks! -Jason -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com mailto:neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com mailto:neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com mailto:neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Neo4j] What are the plans for mixed-type arrays
Yes. We do the same thing and it is a bit of a pain. It's what almost made us go with Titan instead Sent from my iPhone On Jul 9, 2014, at 20:31, Alan Robertson al...@unix.sh wrote: On 7/9/2014 5:44 PM, Clark Richey wrote: Just to chime in, more complex types such as maps would be immensely valuable! Agreed. I absolutely require maps -- so I store mine in JSON. Unfortunately, I can't query them. But at least I have the data, and my software can process it. Sent from my iPhone On Jul 9, 2014, at 17:46, Michael Hunger michael.hun...@neotechnology.com wrote: There are no plans for that, rather for more complex data types at some point (maps, nested documents) but not in the close future. What do you want to do? Michael On Wed, Jul 9, 2014 at 7:13 PM, Jason Gillman Jr. mackdaddydie...@gmail.com wrote: Hello! I was just wondering what, if any, plans there are in regard to mixed-type arrays for properties. Thanks! -Jason -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Neo4j] neo4j cypher query too slow
Hi Michael, The data is from one website. The user_id is the ID of each registered user. And every user_id is linked to one or more cookie_ids (the value of one cookie). Also one cookie_id is linked to one or more user_ids. So user_id and cookie_id are many to many mapping. My case is to find all user_ids linked with each other (via cookie_ids, and no limit on the path length) and assign them one unique ID (here i used then smallest user_id in the path). for example: All user_ids (user_id1, user_id2, user_id3) in the following path should be assigned one same ID (e.g. user_id1) user_id1cookie_id1user_id2-cookie-id2-user_id3 I imported the data to neo4j and use different labels for user_id and cookie_id. There is only one type of relationship (cookie_id -- user_id) and the direction doesn't matter. On Thursday, July 10, 2014 6:01:14 AM UTC+8, Michael Hunger wrote: This is a graph global query, with unlimited paths, so it might generate many billions or trillions of paths to look at. Esp. if you don't provide a direction. if your nodes are all users, then you do the equivalent of finding all paths between the cross product of 16M^2 Perhaps you can describe your actual use-case that you try to solve? Michael On Wed, Jul 9, 2014 at 4:23 PM, Guitao Ding dingg...@baixing.com javascript: wrote: Hi all, I'm leaning to user neo4j for relation analysis recently. Today I found it took too long for my cypher query took to finish. I used the batch importer https://github.com/jexp/batch-import/tree/20 to import all data into neo4j. And I wanted to find the smallest user_id connected (directly or undirectly, path length no limit) to each user_id. Below is the details: neo4j version: 2.1.2 nodes num: 16M (three labels) relation num: 10M cypher query: match (n:user_id)-[:mapping*]-(d:user_id) with n.value as user_id, case when min(d.value) n.value then n.value else min(d.value) end as people_id return user_id, people_id What should I do to improve my query performance? Any suggestions would be appreciated! Thanks in advance. Guitao -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+un...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Neo4j] What are the plans for mixed-type arrays
Didn't have any specific plans, but was rather just curious if mixed type arrays were on the road map. Of course, maps would be nice! On Wednesday, July 9, 2014 5:46:51 PM UTC-4, Michael Hunger wrote: There are no plans for that, rather for more complex data types at some point (maps, nested documents) but not in the close future. What do you want to do? Michael On Wed, Jul 9, 2014 at 7:13 PM, Jason Gillman Jr. mackdad...@gmail.com javascript: wrote: Hello! I was just wondering what, if any, plans there are in regard to mixed-type arrays for properties. Thanks! -Jason -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+un...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Neo4j group. To unsubscribe from this group and stop receiving emails from it, send an email to neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
