Neo4j | Intelligent Question Answering System Based on Movie

 by   NTDXYG Java Version: Current License: Apache-2.0

kandi X-RAY | Neo4j Summary

kandi X-RAY | Neo4j Summary

Neo4j is a Java library. Neo4j has no bugs, it has build file available, it has a Permissive License and it has low support. However Neo4j has 3 vulnerabilities. You can download it from GitHub.

Intelligent Question Answering System Based on Movie Knowledge Graph and WeChat Mini Program

            kandi-support Support

              Neo4j has a low active ecosystem.
              It has 27 star(s) with 4 fork(s). There are 2 watchers for this library.
              It had no major release in the last 6 months.
              There are 1 open issues and 0 have been closed. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of Neo4j is current.

            kandi-Quality Quality

              Neo4j has 0 bugs and 0 code smells.

            kandi-Security Security

              Neo4j has 3 vulnerability issues reported (2 critical, 0 high, 1 medium, 0 low).
              Neo4j code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              Neo4j is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              Neo4j releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              Neo4j saves you 529 person hours of effort in developing the same functionality from scratch.
              It has 1240 lines of code, 111 functions and 28 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed Neo4j and discovered the below as its top functions. This is intended to give you an instant insight into Neo4j implemented functionality, and help decide if they suit your requirements.
            • Ask the user to answer a question
            • Analyze query string
            • Load custom dictionary
            • Returns abstract query string
            • Load Spark Bayes model
            • Convert a sentence to a double array
            • Load content of file
            • Start the downloader
            • Downloads a file from a URL
            • Load questions pattern
            • Load vocabulary
            • Request to chat with a question
            • Query for movie files
            • Main entry point
            • Get a list of genres
            • Get movie by title
            • Get people by name
            • Display path
            Get all kandi verified functions for this library.

            Neo4j Key Features

            No Key Features are available at this moment for Neo4j.

            Neo4j Examples and Code Snippets

            No Code Snippets are available at this moment for Neo4j.

            Community Discussions


            Cypher query in a neo4j graph
            Asked 2021-Jun-14 at 23:24

            I have the following graph in Neo4j:
            Book: book_id, isbn, language_code, title, image_url, small_image_url, avg_ratings,
            Author: name,
            Reader: id,
            with 3 relationships:
            (Reader)-[:Rated]->(Book) that has the property {rating: value},

            I want to find the book that has been most recommended with a query in Cypher.
            I wrote a query but I'm not too sure about it because I'm not familiar using count() and max() operators.

            Here is my attempt:



            Answered 2021-Jun-14 at 22:16


            spring data neo4j 6.1.1 Repository Relationship primary_id not allowing to use UUID String where as for Node Primary_id UUID String is working
            Asked 2021-Jun-12 at 17:00

            I have the following relationship entity for neo4j Graph Model using Spring data neo4j 6.1.1 to represent relationship like Person-BookedFor->Movie where i can use UUID string for node repositories (Person, Movie) but not for the following relationship Entity BookedFor.

            Note: since the neo4j doc describes this neo4j doc ref



            Answered 2021-Jun-10 at 15:17

            You cannot access relationship properties directly via repositories. Those classes are just an encapsulation for properties on relationships and are not meant to represent a "physical" relationship or more a relationship entity. Repositories are for @Node annotated classes solely.

            If you want to access and modify the properties of a relationship, you have to fetch the relationship defining entity. A relationship on its own is always represented by its start and end node.

            The lately introduced required @Id is for internal purposes only. If you have a special need to persist an id-like property on the relationship, it would be just another property in the @RelationshipProperties annotated class.



            Dynamic Neo4j Cypher Query
            Asked 2021-Jun-10 at 09:28

            Is there a way to write the below neo4j cypher script to handle n case whens depending on the size of the array being read? I have varying array sizes on which to calculate co2 consumption so to use a one size fits all case when would be highly inefficient.



            Answered 2021-Jun-10 at 09:28

            I did this in the end using the python library py2neo, and created the cypher query using python



            Neo4j: Applying index and constraint changes query results
            Asked 2021-Jun-09 at 22:27

            I am encountering an issue with Neo4j where the results for the same query change after applying the below:

            • an index on a property for nodes with a given label
            • a constraint that asserts the existence of the same property for nodes with the same label as above
            • Neo4j version: 4.2.1 Enterprise, default runtime (slotted)
            • Neo4j Desktop 1.4.1
            • Operating system: macOS Big Sur Version 11.4
            Steps to reproduce:

            Create one set of nodes and relationships by running the following:



            Answered 2021-Jun-09 at 22:27

            Yes, this is a good illustration of a bug that was fixed in Neo4j 4.2.3, and happens when the label is present in an OPTIONAL MATCH on a previously-bound variable.

            From the changelog:

            Fixed a bug where an index scan would be used to solve an OPTIONAL MATCH incorrectly.


            The workaround until the fix was to remove the redundant label.

            We highly recommend staying updated to at least the latest patch for your minor version to avoid known and fixed bugs.



            How to sync postgres database with neo4j in realtime while using Django-admin?
            Asked 2021-Jun-09 at 20:59

            So currently I am working on a Django project where I have two different databases. one is PostgreSQL and the second is Neo4j. what I want is real-time sync between both databases. I am using the Django-admin panel for crud operation in the Postgres database. now I want every crud operation update in the neo4j database also. but I don't know how to do it.



            Answered 2021-Jun-09 at 20:59

            There are a few routes you could go with this. I think you are going to want to leave Postgres as your main Django database and use Neo4j as an accessory DB, not managed by the Django framework. You can do this by using the Neo4j client library similar to this post for interfacing with the graph DB yourself.

            To keep Neo4j in sync with the Postgres managed by Django, I think signals are going to be your best friend, specifically the post_save signal. Essentially, anytime that you save a Django model, this signal will fire a function that you can write to use the Neo4j client API to reflect the changes in the graph database.

            However, depending on how complex your models are, this is where it can get tricky determining which fields were changed to only update those. I had a similar issue a while back and used this custom Mixin (I cant find the original author but kept this in my notes):



            Embedded Neo4j with Graph Data Science - BFS Procedure appears to be missing
            Asked 2021-Jun-04 at 20:45

            The documentation here describes a callable "".

            In order to call that, to the best of my knowledge, it needs to be registered with the embedded DB. Something along the lines of



            Answered 2021-Jun-04 at 20:45

            The required procedure is conveniently called "TraverseProc" and allows use of both BFS and DFS.

            The file doesn't include the name of the callable, either. Discovered it through search of all my neo4j dependencies with



            @Transactional in Spring Data Neo4j 6
            Asked 2021-Jun-04 at 05:08

            I have a simple Spring Boot project with Neo4j SDN (v6.1.1). The problem is that when I mark a method with @Transactional, it seems that it does not consider that (as opposed to when I used Neo4j-OGM and a previous version of SDN). When I checked the database after "", the update was visible in the database, even before the whole method is run. What should I do?

            The method:



            Answered 2021-Jun-04 at 05:08

            The method needs to have a public visibility. Otherwise Spring cannot create the needed infrastructure around this (proxy related).

            There is a little bit more information around this in the documentation A few lines under the linked section there is a box

            When you use proxies, you should apply the @Transactional annotation only to methods with public visibility. If you do annotate protected, private or package-visible methods with the @Transactional annotation, no error is raised, but the annotated method does not exhibit the configured transactional settings. If you need to annotate non-public methods, consider using AspectJ (described later).



            Correct use of UNWIND and COLLECT
            Asked 2021-Jun-03 at 19:11

            I am trying to COLLECT the list of ids for each iteration in UNWIND of Cypher in Neo4j. As usual, COLLECT is collecting all ids for UNWIND then returning everything as one vector. But I am looking to get vectors of the vector.



            Answered 2021-Jun-03 at 19:11

            So the part you're missing is how grouping keys work in aggregations. The non-aggregation terms act as the grouping key, providing context for the rows that will be emitted, and for what rows the aggregations are being applied.

            Your collect() aggregation has no other terms, so there is no grouping key, and you end up with a single list.

            If you want the collect() to apply per session_id, then you need to include the session_id as a non-aggregation term so it can act as a grouping key for the aggregation:



            How to make relationships between already created nodes of different columns from a single csv file?
            Asked 2021-Jun-02 at 18:43

            I have a single csv file whose contents are as follows -



            Answered 2021-Jun-02 at 18:43

            You can ignore the cartesian product warning, since that exact approach is needed in order to create the relationships that form the patterns you need.

            As for the multiple relationships, it's possible you may have run the query twice. The second run would have created the duplicate relationships. You could use MERGE instead of CREATE for the relationships, that would ensure that there would be no duplicates.



            Related to neo4j and csv files
            Asked 2021-Jun-02 at 16:26

            enter image description hereI'm new to neo4j and cypher. I want to create node for multiple sub nodes. I have patient file and I have one allergy file so first I want to create node allergies and then I want to add sub nodes to this node. Then I want to add that allergies node to patient. such as patient-[:has allergies]-allergies<-latex allergy allergies another node for another allergy connected to allergies. how can I do that in neo4j? allergy.csv file contains



            Answered 2021-Jun-02 at 16:26

            After a long conversation, I cannot leave this thread without an answer.


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            Due to incorrect access control in Neo4j Enterprise Database Server 3.4.x before 3.4.9, the setting of LDAP for authentication with STARTTLS, and System Account for authorization, allows an attacker to log into the server by sending any valid username with an arbitrary password.
            Multiple cross-site request forgery (CSRF) vulnerabilities in Neo4J 1.9.2 allow remote attackers to hijack the authentication of administrators for requests that execute arbitrary code, as demonstrated by a request to (1) db/data/ext/GremlinPlugin/graphdb/execute_script or (2) db/manage/server/console/.

            Install Neo4j

            You can download it from GitHub.
            You can use Neo4j like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the Neo4j component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer For Gradle installation, please refer .


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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