Extracting Relevant Questions to an RDF Dataset Using Formal ...
Extracting Relevant Questions to an RDF Dataset Using Formal Concept Analysis 2016.05.09 Outline Introduction Formal Concept Analysis Generating questions building formal context creating concept lattice
query interface find interesting questions Validation Inspiration Introduction a potentially interesting dataset has been discovered significant efforts are currently required in order to understand its schema, its content, the way to query it and what it can answer automatically discover questions that can be answered by an
RDF dataset sets of entities => answers a hierarchy of meaningful sets of entities from a dataset => query interface identifying relevant questions to act as a starting point to the navigation in the question hierarchy empirical analysis metrics (formal concept analysis & ontology summarisation) Introduction
questions: "Who knows Tom?" query: "" "What are the people that Tom knows?" "What are the things that Tom knows?" "What are the people that Tom met?" Formal Concept Analysis formal context
set of objects set of attributes binary relation concept extent intent objects
attributes concept lattice set of all concepts derived from a formal context subconcept relation () => and Building Formal Context consider 3 types of attributes applied to instance
example & Creating Concept Lattice Figure: Concept lattice generated from http://kmi.open.ac.uk/people/tom/rdf
Query Interface pseudo-natural language "What are the that and that ?" ,, example "What are the that ?"
a complete hierarchy of questions Query Interface Find Interesting Questions generate a reasonable entry point into a large question hierarchy. Ontology Summarization coverage level density
union of not too high not too low not too high FCA support not a large number intensional stability extensional stability Find Interesting Questions
Experiment ask 12 users to inspect a reasonably large dataset and express up to 5 questions they believe to be interesting. 27(61%) out of 44 questions match the format of questions produced by the method. the use of disjunctive clauses Which Greek plays have been performed in Kenneth McLeishs translations or versions? numerical manipulations/tests on values What are the restaurants that have ratings higher than 2.5
Find Interesting Questions generate a reasonable entry point into a large question hierarchy. Ontology Summarization level density : d(concept level, average level) : diff(density(concetp), 2) FCA support
depends on dataset intensional stability vary low (0.0008) to high (0.82) extensional stability always high (0.75~1.0) linear combination of the 3 metrics Validation Inspiration use FCA to analyze baidu baike. Class and property
automatically extract questions from baidu baike and extend questions. generate question-answer pairs
Welcome to U.S. Soccer's online training for the Grade 7 Referee Course. Training for this course is specific to preparing officials for the amateur adult game. This presentation focuses on advantage. Classroom. Instructor Talking Points:
A technique for outlining all of the alternative ways to reach the decided goal. The technique works by analyzing users' behavior. ... A user-story also describes several scenarios, each with a precondition, a trigger, and an expected outcome.
POTASSIUM. Deficiency symptoms: Dark green plants with yellowish brown leaf margins or dark brown necrotic spots first appear on the tip of older leaves. Causes of N deficiency. Low soil K supply. Insuficient application of K. Rice straw burned and...
Approximately 156,000 Allied troops invaded France. Hitler forced to fight a two-front war. Allies victorious and force Germans to retreat eastward. By 1944, the Allies liberated France, Belgium, Luxembourg, and the Netherlands. Answer the Aim: Why was D-Day a significant...
Retained earnings 30 Inventory 30 Change in Inventory Methods - Example 2017 2018 Cost of Goods Sold - FIFO 40 38 Cost of Goods Sold - Average 56 52 Difference 16 14 Total 30 Prepare the journal entry at the...
Aerobic Exercices Jogging Basketball Soccer Swimming Biking Skateboarding Kick-boxing Stair-Climbing Jumping Rope Racquet Sports Brisk Walking Ice Skating FITT PRINCIPLE to Improve the Cardiorespiratory System F = MINIMUM OF 3 TIMES A WEEK I = WITHIN YOUR TARGET HEART RATE...
Ready to download the document? Go ahead and hit continue!