# Problem with graph algorithms/jaccard similarity **URL:** \ **Category:** Graph Data Science / Graph Analytics\ **Created:** [February 12, 2020, 9:51am UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626 "2020-02-12T09:51:55Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![elaine](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/elaine/32/4991_2.png) [@elaine](https://community.neo4j.com/u/elaine)\ **Post date:** [February 12, 2020, 9:51am UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/1 "2020-02-12T09:51:55Z")
Hi all, When calculating jaccard similarity using: `RETURN algo.similarity.jaccard([1,2,3], [1,2,4,5]) AS similarity` I received the following error: > Neo.ClientError.Statement.SyntaxError > Unknown function 'algo.similarity.jaccard' (line 1, column 8 (offset: 7)) > "RETURN algo.similarity.jaccard([1,2,3], [1,2,4,5]) AS similarity" > ^ I then verified that i have graph algorithm installed and ran `CALL algo.list()` which gave me this error: > Neo.ClientError.Procedure.ProcedureNotFound > There is no procedure with the name `algo.list` registered for this database instance. Please ensure you've spelled the procedure name correctly and that the procedure is properly deployed. I tried various solutions, including restarting the desktop client, and the solution suggested here ([Problem installing graph algoritms](https://community.neo4j.com/t/problem-installing-graph-algoritms/4338)) which is to add the following to "settings": ```auto dbms.security.procedures.unrestricted=apoc.*, algo.* dbms.security.procedures.whitelist=apoc.*, algo.* ``` However, none of them worked. Anyone has any suggestions how to proceed? Thanks a lot! ---
**Author:** ![ganesanmithun323](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/ganesanmithun323/32/5414_2.png) [@ganesanmithun323](https://community.neo4j.com/u/ganesanmithun323)\ **Post date:** [February 12, 2020, 11:42am UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/2 "2020-02-12T11:42:35Z")
did you place the graph algorithms jar file in the plugins folder? ---
**Author:** ![alicia.frame](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/alicia.frame/32/4507_2.png) [@alicia.frame](https://community.neo4j.com/u/alicia.frame)\ **Post date:** [February 12, 2020, 12:43pm UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/3 "2020-02-12T12:43:00Z")
You need to install the graph algorithms library. To check what you have installed, you can use `CALL dbms.procedures()` to list out the procedures that are available. For installation instructions, check out [Introduction - Neo4j Graph Data Science](https://neo4j.com/docs/graph-algorithms/current/introduction/#_installation) ---
**Author:** ![elaine](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/elaine/32/4991_2.png) [@elaine](https://community.neo4j.com/u/elaine)\ **Post date:** [February 13, 2020, 1:41am UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/4 "2020-02-13T01:41:25Z")
Hi Alice. Thanks a lot for the reply. I tried to install the graph algorithms library but there doesn't seem to be an "install" button next to it on the plugins page (unlike what is shown in the installation guide): ![Screenshot 2020-02-13 at 9.35.54 AM](https://us1.discourse-cdn.com/flex021/uploads/neo4jcommunity/original/2X/f/f3642c44cc2965d044402acfb25bc12fd5eba531.png) Is there something I'm missing? ---
**Author:** ![elaine](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/elaine/32/4991_2.png) [@elaine](https://community.neo4j.com/u/elaine)\ **Post date:** [February 13, 2020, 1:48am UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/5 "2020-02-13T01:48:44Z")
I tried downloading the jar file from here: [Releases · neo4j-contrib/neo4j-graph-algorithms · GitHub](https://github.com/neo4j-contrib/neo4j-graph-algorithms/releases) and putting it into the plugins folder, but now the graph server won't start and gives me this error: ![Screenshot 2020-02-13 at 9.45.23 AM](https://us1.discourse-cdn.com/flex021/uploads/neo4jcommunity/original/2X/2/20e0b013757081a347bf7bcd2e05bf5b5c4e0777.png) ---
**Author:** ![ganesanmithun323](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/ganesanmithun323/32/5414_2.png) [@ganesanmithun323](https://community.neo4j.com/u/ganesanmithun323)\ **Post date:** [February 13, 2020, 5:56am UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/6 "2020-02-13T05:56:24Z")
hi elaine, could you please share the complete error log. open the logs window when you start the server . you can see the error there. or see the logs/neo4j.log file ---
**Author:** ![elaine](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/elaine/32/4991_2.png) [@elaine](https://community.neo4j.com/u/elaine)\ **Post date:** [February 13, 2020, 7:28am UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/7 "2020-02-13T07:28:18Z")
here's the complete error log for the session: ```auto Directories in use: home: /Users/elaine/Library/Application Support/Neo4j Desktop/Application/neo4jDatabases/database-f2804e32-e073-4bc4-84bb-994e20341e2c/installation-4.0.0 config: /Users/elaine/Library/Application Support/Neo4j Desktop/Application/neo4jDatabases/database-f2804e32-e073-4bc4-84bb-994e20341e2c/installation-4.0.0/conf logs: /Users/elaine/Library/Application Support/Neo4j Desktop/Application/neo4jDatabases/database-f2804e32-e073-4bc4-84bb-994e20341e2c/installation-4.0.0/logs plugins: /Users/elaine/Library/Application Support/Neo4j Desktop/Application/neo4jDatabases/database-f2804e32-e073-4bc4-84bb-994e20341e2c/installation-4.0.0/plugins import: NOT SET data: /Users/elaine/Library/Application Support/Neo4j Desktop/Application/neo4jDatabases/database-f2804e32-e073-4bc4-84bb-994e20341e2c/installation-4.0.0/data certificates: /Users/elaine/Library/Application Support/Neo4j Desktop/Application/neo4jDatabases/database-f2804e32-e073-4bc4-84bb-994e20341e2c/installation-4.0.0/certificates run: /Users/elaine/Library/Application Support/Neo4j Desktop/Application/neo4jDatabases/database-f2804e32-e073-4bc4-84bb-994e20341e2c/installation-4.0.0/run Starting Neo4j. 2020-02-13 07:23:06.088+0000 INFO ======== Neo4j 4.0.0 ======== 2020-02-13 07:23:06.097+0000 INFO Starting... 2020-02-13 07:23:17.429+0000 INFO Called db.clearQueryCaches(): Query cache already empty. 2020-02-13 07:23:34.095+0000 ERROR Failed to start Neo4j: Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabaseService@49d42faf' was successfully initialized, but failed to start. Please see the attached cause exception "Argument `nodeIds` at position 0 in `list` with type `List` cannot be converted to a Neo4j type: Default value `` could not be parsed as a LIST? OF INTEGER?". Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabaseService@49d42faf' was successfully initialized, but failed to start. Please see the attached cause exception "Argument `nodeIds` at position 0 in `list` with type `List` cannot be converted to a Neo4j type: Default value `` could not be parsed as a LIST? OF INTEGER?". org.neo4j.server.ServerStartupException: Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabaseService@49d42faf' was successfully initialized, but failed to start. Please see the attached cause exception "Argument `nodeIds` at position 0 in `list` with type `List` cannot be converted to a Neo4j type: Default value `` could not be parsed as a LIST? OF INTEGER?". at org.neo4j.server.exception.ServerStartupErrors.translateToServerStartupError(ServerStartupErrors.java:45) at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:163) at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:114) at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:89) at com.neo4j.server.enterprise.EnterpriseEntryPoint.main(EnterpriseEntryPoint.java:25) Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.server.database.LifecycleManagingDatabaseService@49d42faf' was successfully initialized, but failed to start. Please see the attached cause exception "Argument `nodeIds` at position 0 in `list` with type `List` cannot be converted to a Neo4j type: Default value `` could not be parsed as a LIST? OF INTEGER?". at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:465) at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:111) at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:156) ... 3 more Caused by: java.lang.RuntimeException: Error starting database server at /Users/elaine/Library/Application Support/Neo4j Desktop/Application/neo4jDatabases/database-f2804e32-e073-4bc4-84bb-994e20341e2c/installation-4.0.0/data/databases at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.startDatabaseServer(DatabaseManagementServiceFactory.java:167) at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.build(DatabaseManagementServiceFactory.java:145) at com.neo4j.server.database.EnterpriseGraphFactory.newDatabaseManagementService(EnterpriseGraphFactory.java:38) at org.neo4j.server.database.LifecycleManagingDatabaseService.start(LifecycleManagingDatabaseService.java:88) at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:444) ... 5 more Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.procedure.impl.GlobalProceduresRegistry@59f93db8' was successfully initialized, but failed to start. Please see the attached cause exception "Argument `nodeIds` at position 0 in `list` with type `List` cannot be converted to a Neo4j type: Default value `` could not be parsed as a LIST? OF INTEGER?". at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:465) at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:111) at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.startDatabaseServer(DatabaseManagementServiceFactory.java:158) ... 9 more Caused by: org.neo4j.internal.kernel.api.exceptions.ProcedureException: Argument `nodeIds` at position 0 in `list` with type `List` cannot be converted to a Neo4j type: Default value `` could not be parsed as a LIST? OF INTEGER? at org.neo4j.procedure.impl.MethodSignatureCompiler.signatureFor(MethodSignatureCompiler.java:115) at org.neo4j.procedure.impl.ProcedureCompiler.compileProcedure(ProcedureCompiler.java:251) at org.neo4j.procedure.impl.ProcedureCompiler.compileProcedure(ProcedureCompiler.java:225) at org.neo4j.procedure.impl.ProcedureJarLoader.loadProcedures(ProcedureJarLoader.java:114) at org.neo4j.procedure.impl.ProcedureJarLoader.loadProceduresFromDir(ProcedureJarLoader.java:85) at org.neo4j.procedure.impl.GlobalProceduresRegistry.start(GlobalProceduresRegistry.java:342) at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:444) ... 11 more 2020-02-13 07:23:34.096+0000 INFO Neo4j Server shutdown initiated by request ``` ---
**Author:** ![ganesanmithun323](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/ganesanmithun323/32/5414_2.png) [@ganesanmithun323](https://community.neo4j.com/u/ganesanmithun323)\ **Post date:** [February 13, 2020, 8:58am UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/8 "2020-02-13T08:58:55Z")
the error says that there is some procedure using incompatible data type . Do you have any other jars in plugins folder ? And were you able to start the neo4j without graph algorithms jar ? ---
**Author:** ![elaine](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/elaine/32/4991_2.png) [@elaine](https://community.neo4j.com/u/elaine)\ **Post date:** [February 13, 2020, 9:16am UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/9 "2020-02-13T09:16:59Z")
I also have the apoc jar in the same folder (apoc-4.0.0.2.jar). The graph server is able to start without the graph algorithm jar. ---
**Author:** ![alicia.frame](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/alicia.frame/32/4507_2.png) [@alicia.frame](https://community.neo4j.com/u/alicia.frame)\ **Post date:** [February 13, 2020, 3:27pm UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/10 "2020-02-13T15:27:59Z")
It looks like you're using Neo4j 4.0, which is not compatible with graph algorithms. If you downgrade your database to 3.5.X, you'll be able to download the algos plugin via desktop. ---
**Author:** ![elaine](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/elaine/32/4991_2.png) [@elaine](https://community.neo4j.com/u/elaine)\ **Post date:** [February 14, 2020, 1:02am UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/11 "2020-02-14T01:02:36Z")
Thanks Alicia, that solved it! ---
**Author:** ![dorsaf.baccari16](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/dorsaf.baccari16/32/5034_2.png) [@dorsaf.baccari16](https://community.neo4j.com/u/dorsaf.baccari16)\ **Post date:** [April 4, 2020, 2:43pm UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/12 "2020-04-04T14:43:07Z")
Please can you show me the link of neo4j version 3.5 because i just found neo4j version 4.0 ? ---
**Author:** ![alicia.frame](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/alicia.frame/32/4507_2.png) [@alicia.frame](https://community.neo4j.com/u/alicia.frame)\ **Post date:** [April 6, 2020, 1:20pm UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/13 "2020-04-06T13:20:46Z")
You can find both versions on our download center page: [https://neo4j.com/download-center/](https://neo4j.com/download-center/) ---
**Author:** ![veri-chris](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/veri-chris/32/4087_2.png) [@veri-chris](https://community.neo4j.com/u/veri-chris)\ **Post date:** [April 9, 2020, 4:06am UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/14 "2020-04-09T04:06:54Z")
Alicia - Thank you for this very clear statement which is completely missing from anyplace in release notes, implementation instructions, the Migrating to 4.0 notes or really anyplace except here. Thank you also to Google Search for making it possible to stop beating my head against the monitor trying to reconcile this statement from the release notes: Compatibility Warning: Graph algorithms 3.5.14.0 is only compatible with Neo4j 3.5.9 and above. Though we now know (again, thank you) that this is false 4.0 does technically meet the definition of "above" 3.5.9 - yes? When can we expect to see 4.x compatible GAs? Or is the technical direction to eliminate GAs in favor of GDS somehow and if so, then same question. ---
**Author:** ![alicia.frame](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/alicia.frame/32/4507_2.png) [@alicia.frame](https://community.neo4j.com/u/alicia.frame)\ **Post date:** [April 9, 2020, 6:14pm UTC](https://community.neo4j.com/t/problem-with-graph-algorithms-jaccard-similarity/14626/15 "2020-04-09T18:14:39Z")
Please see the compatibility matrix in our documentation: [Installation - Neo4j Graph Data Science](https://neo4j.com/docs/graph-data-science/current/installation/#_supported_neo4j_versions) , or the compatibility section at the bottom of our release notes: [Graph Data Science 1.0.0 - Neo4j Graph Data Platform](https://neo4j.com/graph-data-science-1-0-0-release-notes/) Look for a 4.0 compatible release of GDS at the end of the month -- we're currently targeting April 23 for a preview release of a 4.0 compatible binary, GA in early May. The Graph Algorithms library has been deprecated and will no longer be updated, now that the graph data science library has been launched. There will not be a 4.0 compatible release of the Graph Algorithms library.