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About the Community

SHACL Validation: Validating fields on edge

Hello, I'm trying to figure out how to use the SHACL validation to validate fields on an edge. For example, with the following data, how would I validate that the performanceRating exists and is in a range of 1-5? CREATE (:Person {name: "Emil"})-[:ACTED_IN {performanceRating: 4}]->(:Play { title: "Macbeth", released: "2020"}) Thanks, John
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‎11-16-2021 08:17 PM

Trying to visualize the entire graph

Hi all, This feels like a serious case of RTFM, but I can't seem to find the answer to a rather silly question. I am trying to display the entire graph in http://localhost:7474/browser/ , so I entered MATCH (n) RETURN n and it shows a large graph, however, not complete. If I double click on nodes, I see more edges and more nodes popping up. I searched some more and found MATCH (n) OPTIONAL MATCH (n)-[r]-(m) RETURN n,r,m , but that returned pretty much the same result, and I could expand nodes by double clicking on them.. What am I missing? Thanks!
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‎11-16-2021 12:51 AM

Adding a where clause on a privilege?

Hi, I am wondering if when giving privileges to a role i am able to provide a where clause when granting/denying READ and TRAVERSE privileges. for example GRANT TRAVERSE ON GRAPH healthcare NODES * WHERE n.disease = "Flu" // is This possible? TO researcherW; Any help will be greatly appreciated!!!!
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‎11-10-2021 04:25 PM

Finding associations between nodes from different types

Hello everyone, I have a question, and I would appreciate it if you can help me. I have modeled a graph in Neo4j as a 5-layer multipartite graph such that no two nodes of the same type(label) are connected, but nodes from different layers are. It is a simple model like this: 5 types of nodes( i.e. 5 layers) A--> B --> C <-- D --> E. I want to find the ( possible ) associations between the set of nodes of type A (the first in that chain) with nodes of type E (the last in that chain). I would like to ask if someone can help by suggesting a way of doing so. I thought of centrality measures but I found that none of the supported centrality algorithms works with heterogeneous data. Thanks in advance.
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‎11-08-2021 06:47 AM

Bachelor Thesis - Great ideas are welcome - Please think out of the box

Hi, I'm new to the forum and currently on my 5th semester of my Bachelor in Data Science. My main interest within Data Science is the translation of Data Science capabilities into real business value. So as cool as projects like ' Network analysis of cycling infrastructure are from a technical point of view, I would like to do my Bachelor Thesis about a business relevant issue. So my question to anybody that would like to help, is do you have a great idea for a thesis topic with real business value? One idea I was thinking about was building a predictive model for salespeople's performance based past performance, client base, CRM data etc. I don't know if that is going to be to big a task or? So any ideas? Any help is greatly appreciated. Thank you Chris
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‎11-04-2021 02:47 PM

Neo4j database in the desktop can't be started

Hello, I have already tried uninstalling/installing, deleting all the related files but, I still cannot start a new database when I reinstall the fresh version of the Neo4j Desktop. Your support will be truly helpful in this regard. Here is my log: [2021-10-31 11:10:08.494] [info] Starting Neo4j Desktop 1.4.9 @ Windows_NT 10.0.19042 [2021-10-31 11:10:08.799] [info] Initializing persistence [2021-10-31 11:10:08.801] [info] GraphQL server is running @ http://127.0.0.1:11001 [2021-10-31 11:10:08.818] [info] Creating persistent store - projects [2021-10-31 11:10:08.831] [info] Creating persistent store - databases [2021-10-31 11:10:08.837] [info] Creating persistent store - userData [2021-10-31 11:10:08.842] [info] Creating persistent store - graphApps [2021-10-31 11:10:09.219] [info] Creating persistent store - plugins [2021-10-31 11:10:09.224] [info] Creating persistent store - distributions [2021-10-31 11:10:09.229] [info] Creating persistent store - licenses [2021-10-31 11:10:09.355] [info] Creating persistent store - notifications [2021-10-31 11:10:09.361] [info] Creating persistent store - karhu [2021-10-31 11:10:09.459] [info] Creating persistent store - permissions [2021-10-31 11:10:09.504] [info] Creating persistent store - certificates [2021-10-31 11:10:09.511] [info] Configuring crash reporting [2021-10-31 11:10:09.512] [info] Creating new client ID [2021-10-31 11:10:09.515] [info] Reading settings [2021-10-31 11:10:09.517] [info] PowerShell compatibility check [2021-10-31 11:10:12.642] [info] PowerShell version: 5. Required version: 5. [2021-10-31 11:10:12.970] [info] PowerShell language mode: FullLanguage [2021-10-31 11:10:12.987] [info] Reading bundled resources C:\Program Files\Neo4j Desktop\resources [2021-10-31 11:10:12.989] [info] Distribution folder for java should exist [2021-10-31 11:10:12.991] [info] Will copy [ 'zulu11.41.23-ca-jdk11.0.8-win_x64.zip', 'zulu8.48.0.53-ca-jdk8.0.265-win_x64.zip' ] [2021-10-31 11:10:26.884] [info] Starting Neo4j Desktop 1.4.9 @ Windows_NT 10.0.19042 [2021-10-31 11:10:26.940] [error] Protocol Manager error TypeError [ERR_INVALID_URL]: Invalid URL: --allow-file-access-from-files at onParseError (internal/url.js:259:9) at new URL (internal/url.js:335:5) at t.default (C:\Program Files\Neo4j Desktop\resources\app.asar\dist\main.prod.js:1:201924) at App. (C:\Program Files\Neo4j Desktop\resources\app.asar\dist\main.prod.js:1:231481) at App.emit (events.js:315:20) at App.EventEmitter.emit (domain.js:467:12) at App.emitter.emit (C:\Program Files\Neo4j Desktop\resources\app.asar\node_modules@sentry\electron\dist\main\integrations\electron.js:63:25) [2021-10-31 11:10:44.151] [info] Starting Neo4j Desktop 1.4.9 @ Windows_NT 10.0.19042 [2021-10-31 11:10:44.206] [error] Protocol Manager error TypeError [ERR_INVALID_URL]: Invalid URL: --allow-file-access-from-files at onParseError (internal/url.js:259:9) at new URL (internal/url.js:335:5) at t.default (C:\Program Files\Neo4j Desktop\resources\app.asar\dist\main.prod.js:1:201924) at App. (C:\Program Files\Neo4j Desktop\resources\app.asar\dist\main.prod.js:1:231481) at App.emit (events.js:315:20) at App.EventEmitter.emit (domain.js:467:12) at App.emitter.emit (C:\Program Files\Neo4j Desktop\resources\app.asar\node_modules@sentry\electron\dist\main\integrations\electron.js:63:25) [2021-10-31 11:11:04.358] [info] Starting Neo4j Desktop 1.4.9 @ Windows_NT 10.0.19042 [2021-10-31 11:11:04.415] [error] Protocol Manager error TypeError [ERR_INVALID_URL]: Invalid URL: --allow-file-access-from-files at onParseError (internal/url.js:259:9) at new URL (internal/url.js:335:5) at t.default (C:\Program Files\Neo4j Desktop\resources\app.asar\dist\main.prod.js:1:201924) at App. (C:\Program Files\Neo4j Desktop\resources\app.asar\dist\main.prod.js:1:231481) at App.emit (events.js:315:20) at App.EventEmitter.emit (domain.js:467:12) at App.emitter.emit (C:\Program Files\Neo4j Desktop\resources\app.asar\node_modules@sentry\electron\dist\main\integrations\electron.js:63:25) [2021-10-31 11:11:10.680] [info] Distribution folder for neo4j should exist [2021-10-31 11:11:10.681] [info] Will copy [ 'neo4j-enterprise-4.3.5-windows.zip' ] [2021-10-31 11:11:10.765] [info] Reading bundled resources C:\Program Files\Neo4j Desktop\resources [2021-10-31 11:11:10.768] [info] Distribution folder for graphApps should exist
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‎10-31-2021 03:26 AM
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