poliaboy/webdataminingproject

Project: Web Datamining & Semantics Project

The Semantic Web project is a large and long practical exercise that consists in integrating all the pieces that have been seen during the first sessions into a consolidated application. To make sure you can advance sufficiently fast to cover everything, you will work by pair.

Main objectives

• Design a food delivery discovery service: We will describe different kinds of entities that are useful for the food delivery discovery service: food products, offers for the food items (including a single item or combos), restaurants and businesses that offer the food items; delivery services (deliveryman, or company: Delivroo, Uber Eats, ...) that work with the restaurants and business to deliver their food items; customers with their customers’s preferences.
• Develop an application that provide, given a customer’s description, the place where to order food at the time of request.

Pedagogical objectives

• Do a little software development, using Semantic Web programming frameworks
• Setup and interact with an RDF database
• Exploit multiple sources of heterogeneous data
• Present information online with rich metadata

Part I: Modeling the ontology

In this part, we aim to create an ontology, using the Protégé editor, which models the food delivery discovery schema in terms of classes hierarchy, properties and restrictions.

Indications:

• Define different class and propertie hiearchies (at leat three hiearchies and three restrictions)
• Define different class restrictions (eg. disjoint, existential and universal restrictions and other conditions on defined classes, ...) (at leat three)
• Define at leat three different type of the properties (transitive, symmetric, inverseOf, etc.) if necessary.

Your application should follows the Linked Data principles:

• As a starting point, individuals are recommeded to be described as instances of classes in Schema.org schemaorg.owl. For instance, food products, be instances of schema:Product;
• User preferences with respect to location, time, price range and, optionally, type of food should be stored in the Linked Data Platform. An example of preferences is provided in the pref-charpenay resource.
• The data of the service should be available online and represented in a standard vocabulary that any application can process.
• Check the consistency of your ontology with PELLET

Part II: Populating the ontology

You will populate you knowledge phase by:

• Manually: RDF instances that you could be manually created in Protégé
• Other sources: From non-RDF formats, you convert online available data (from open data sources, see bellow) into RDF, and load the resulting data. You can simply generate an RDF file that you load it manually, or (better) add the RDF programmatically using SPARQL Update queries. You need for instance to add Json Context to the different available Json files from open data sources, such us:
  • CoopCycle: CoopCycle is a federation of bike delivery coops, all over the world. Bike delivery coops are associations of cyclist who propose their service to restaurants and other businesses to deliver products to customers at home. From this page, you will have to find a JSON document that describes all the coops of this federation. Hint: use advanced capabilities of your browser. From the JSON file found from the web page above, it is possible to find the URIs of each coop, usually associated with a city or agglomeration. From there, CoopCycle exposes information in JSON-LD about local businesses whose products are delivered by the coop. To collect that information, you will have to write an HTML parser that is able to navigate and/or to extract JSON-LD.

Part III: Querying the ontology

Write SPARQL queries to response to the following:

• List the instances of the class food products, offers and customers
• List the name of all Paris restaurants.
• List the name of all vegetarian restaurant, for each one, display their delivery services
• List the name of deliverymen older than 51 years and thay can deliver in Lyon in less that 15 minutes
• List of restaurant that serve Italian food for a specific day and where and until when

Propose 5 SPARQL queries:

• A query that contains at least 2 Optional Graph Patterns
• A query that contains at least 2 alternatives and conjunctions
• A query that contains a CONSTRUCT query form
• A query that contains an ASK query form
• A query that contains a DESCRIBE query form

Part IV: Manipulating the ontology using Jena

Using Jena develop the following functionalities that:

• Loads the ontology and displays all the Persons (without using queries, without inference).
• Loads the ontology and displays all the Persons (using a query, without inference). Create the used query in text file under the data folder.
• Loads the ontology and displays all the Restaurants serving Italian food (

without using queries, using inference).

• Develops a program that:
  • Reads a name of a food
  • If it doesn’t exist displays an error message
  • Else, display its restaurants, delivery services, and offers
  • Display their availability where and when
  • Displays all entities that are restaurant and delivery compagny. Do this using a rule that defines a new class RestDelivery. The rule file must be saved in the data folder.
  • Specifies 3 different rules and implement them in a java program

These instructions assume that you are programming in Java, preferably with Eclipse, using the Apache Jena libraries. You may also use RDF4J in Java, RDFlib in Python, or Redland RDF libary in C, or dotNetRDF in C♯, or EasyRDF for PHP, or N3.js for JavaScript, or Ruby RDF for Ruby, or SWI-Prolog Semantic Web Library, etc.

Work to send:

You will be working on your project full time during the remaining sessions. On your last course session, you will deliver all of your working files, and give a presentation and a demo. You must additionally provide a written report explaining your choices, the functionalities, etc. A deadline will be specified later by your professors. Everything that comes after this deadline will be rejected as if nothing was delivered. Create an archive name1-name2-name3.zip with:

• The *.owl file generated by Protégé (part I and II)
• A (*.txt or *.doc) file containing the SPARQL queries (part III)
• The eclipse src and data folders of (part IV and V)
• The presentation file *.ppt

Upload you archive in DVO deposit;