scholarly journals A User Interface for Exploring and Querying Knowledge Graphs (Extended Abstract)

2020 ◽  
Author(s):  
Hernán Vargas ◽  
Carlos Buil-Aranda ◽  
Aidan Hogan ◽  
Claudia López
Keyword(s):  
User Interface ◽  
Query Languages ◽  
Usability Study ◽  
Graph Query ◽  
Knowledge Graphs ◽  
Visual Interface

As the adoption of knowledge graphs grows, more and more non-experts users need to be able to explore and query such graphs. These users are not typically familiar with graph query languages such as SPARQL, and may not be familiar with the knowledge graph's structure. In this extended abstract, we provide a summary of our work on a language and visual interface -- called RDF Explorer -- that help non-expert users to navigate and query knowledge graphs. A usability study over Wikidata shows that users successfully complete more tasks with RDF Explorer than with the existing Wikidata Query Helper interface.

scholarly journals Correction: Constructing High-Fidelity Phenotype Knowledge Graphs for Infectious Diseases With a Fine-Grained Semantic Information Model: Development and Usability Study (Preprint)

2021 ◽  
Author(s):  
Lizong Deng ◽  
Luming Chen ◽  
Tao Yang ◽  
Mi Liu ◽  
Shicheng Li ◽  
...  
Keyword(s):  
Infectious Diseases ◽  
Semantic Information ◽  
Model Development ◽  
Information Model ◽  
High Fidelity ◽  
Usability Study ◽  
Systems Medicine ◽  
Medical Sciences ◽  
Fine Grained ◽  
Knowledge Graphs

UNSTRUCTURED In “Constructing High-Fidelity Phenotype Knowledge Graphs for Infectious Diseases With a Fine-Grained Semantic Information Model: Development and Usability Study” (J Med Internet Res 2021;23(6):e26892) the authors noted one error. The institution name of affiliation “Suzhou Institute of Systems Medicine” was not correct. It should be corrected from “Suzhou Institute of Systems Medicine” to “Center of Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College; Suzhou Institute of Systems Medicine”

scholarly journals Research on EEG-based Graphic User Interface Kansei Design Evaluation

2020 ◽  
Vol 179 ◽  
pp. 02103
Author(s):  
Hong Ren ◽  
Chunyu Zhang ◽  
Ningning Zhang
Keyword(s):  
User Interface ◽  
Graphical User Interface ◽  
Perceptual Experience ◽  
Evaluation Method ◽  
Design Evaluation ◽  
Graphic User Interface ◽  
Activity Levels ◽  
Design Elements ◽  
Visual Style ◽  
Visual Interface

Graphical user interface (GUI) is designed as the interaction medium between the user and the interface, and the perceptual experience of GUI design has been paid more and more attention by users. Based on the theory of perceptual engineering (KE), two groups of different visual style interfaces were taken as an example to record the EEG data when users watched two groups of visual interfaces, in order to explore the user’s perceptual imagery and perceptual experience for the visual interface. It aims to meet the user’s perceptual needs and provide an effective evaluation method and design basis for the graphical user interface design. Firstly, the EEG spectrogram and brain topographic maps were obtained by data analysis and processing. The results showed that the activity levels of the θ wave and α wave induced by the two groups of different visual style interfaces were significantly different. Secondly, this paper analyzed the user’s perceptual imagery with GUI perceptual design elements, and concluded that the perceptual design elements of GUI would affect the user’s cognitive interest and perceptual experience. GUI design should focus on the unity and coordination of perceptual design elements and perceptual imageries. Finally, it is concluded that the EEG-based perceptual design evaluation method can effectively evaluate the GUI visual interface.

Self-Anamnesis with a Conversational User Interface: Concept and Usability Study

2018 ◽  
Vol 57 (05/06) ◽  
pp. 243-252 ◽  
Author(s):  
Sandra Hochreutener ◽  
Annkathrin Pöpel ◽  
Richard May ◽  
Kerstin Denecke
Keyword(s):  
User Interface ◽  
Health Care Team ◽  
Markup Language ◽  
Usability Study ◽  
Medical Assistant ◽  
Current Version ◽  
Music Therapists ◽  
Rule Based ◽  
Rule Based Approach

Objective Self-anamnesis is a procedure in which a patient answers questions about the personal medical history without interacting directly with a doctor or medical assistant. If collected digitally, the anamnesis data can be shared among the health care team. In this article, we introduce a concept for digital anamnesis collection and assess the applicability of a conversational user interface (CUI) for realizing a mobile self-anamnesis application. Materials and Methods We implemented our concept for self-anamnesis for the concrete field of music therapy. We collected requirements with respect to the application from music therapists and by reviewing the literature. A rule-based approach was chosen for realizing the anamnesis conversation between the system and the user. The Artificial Intelligence Markup Language was exploited for encapsulating the questions and responses of the system. For studying the quality of the system and analyzing performance, humanity, effect, and accessibility of the system, we performed a usability test with 22 persons. Results The current version of the self-anamnesis application is equipped with 63 questions on the music biography of a patient that are asked subsequently to the user by means of a chatbot conversation. The usability study showed that a CUI is a practical way for collecting anamnesis data. Users felt engaged of answering the questions and liked the human characteristics of the chatbot. They suggested to extend the conversation capabilities of the chatbot so that the system can react appropriately, in particular when the user is not feeling well. Conclusions We could demonstrate the applicability of a CUI for collecting anamnesis data. In contrast to digital anamnesis questionnaires, the application of a CUI provides several benefits: the user can be encouraged to complete all queries and can ask clarifying questions in case something is unclear.

DESIGN AND IMPLEMENTATION OF AN EDITOR/INTERPRETER FOR A VISUAL LOGIC PROGRAMMING LANGUAGE

2013 ◽  
Vol 23 (06) ◽  
pp. 801-838
Author(s):  
OMID BANYASAD ◽  
PHILIP T. COX
Keyword(s):  
User Interface ◽  
Logic Programming ◽  
Programming Language ◽  
Interface Design ◽  
General Purpose ◽  
Programming Environment ◽  
Design Decisions ◽  
Logic Programming Language ◽  
Design And Implementation ◽  
Visual Interface

The design and implementation of a programming environment including an editor, a debugger and an interpreter engine for Lograph, a general-purpose visual logic programming language, is discussed. The rationale for user-interface design decisions is presented, the goal of which is to increase cognitive support for the creation, exploration and debugging of Lograph programs. The design of the interpreter engine allows for animation of execution in the debugger. The engine takes full advantage of an efficient implementation of Prolog, and operates on a Prolog translation of Lograph programs and queries. The translated Lograph programs are probed with instrumentation code at appropriate places so that applications of Lograph rules are reported to the visual interface of the Lograph debugger as a side effect of the execution of a program.

scholarly journals From Relation Algebra to Semi-join Algebra: An Approach to Graph Query Optimization

2020 ◽  
Author(s):  
Jelle Hellings ◽  
Catherine L Pilachowski ◽  
Dirk Van Gucht ◽  
Marc Gyssens ◽  
Yuqing Wu
Keyword(s):  
Query Optimization ◽  
Relation Algebra ◽  
Expressive Power ◽  
Query Languages ◽  
Query Evaluation ◽  
Relation Algebras ◽  
Ordered Trees ◽  
Graph Query ◽  
Study Techniques ◽  
The Relationship

Abstract Many graph query languages rely on composition to navigate graphs and select nodes of interest, even though evaluating compositions of relations can be costly. Often, this need for composition can be reduced by rewriting toward queries using semi-joins instead, resulting in a significant reduction of the query evaluation cost. We study techniques to recognize and apply such rewritings. Concretely, we study the relationship between the expressive power of the relation algebras, which heavily rely on composition, and the semi-join algebras, which replace composition in favor of semi-joins. Our main result is that each fragment of the relation algebras where intersection and/or difference is only used on edges (and not on complex compositions) is expressively equivalent to a fragment of the semi-join algebras. This expressive equivalence holds for node queries evaluating to sets of nodes. For practical relevance, we exhibit constructive rules for rewriting relation algebra queries to semi-join algebra queries and prove that they lead to only a well-bounded increase in the number of steps needed to evaluate the rewritten queries. In addition, on sibling-ordered trees, we establish new relationships among the expressive power of Regular XPath, Conditional XPath, FO-logic and the semi-join algebra augmented with restricted fixpoint operators.

scholarly journals ROBOKOP: an abstraction layer and user interface for knowledge graphs to support question answering

2019 ◽  
Vol 35 (24) ◽  
pp. 5382-5384 ◽  
Author(s):  
Kenneth Morton ◽  
Patrick Wang ◽  
Chris Bizon ◽  
Steven Cox ◽  
James Balhoff ◽  
...  
Keyword(s):  
User Interface ◽  
Question Answering ◽  
Supplementary Information ◽  
Knowledge Graph ◽  
Graph Database ◽  
Database Queries ◽  
Complex Queries ◽  
Abstraction Layer ◽  
Software License ◽  
Knowledge Graphs

Abstract Summary Knowledge graphs (KGs) are quickly becoming a common-place tool for storing relationships between entities from which higher-level reasoning can be conducted. KGs are typically stored in a graph-database format, and graph-database queries can be used to answer questions of interest that have been posed by users such as biomedical researchers. For simple queries, the inclusion of direct connections in the KG and the storage and analysis of query results are straightforward; however, for complex queries, these capabilities become exponentially more challenging with each increase in complexity of the query. For instance, one relatively complex query can yield a KG with hundreds of thousands of query results. Thus, the ability to efficiently query, store, rank and explore sub-graphs of a complex KG represents a major challenge to any effort designed to exploit the use of KGs for applications in biomedical research and other domains. We present Reasoning Over Biomedical Objects linked in Knowledge Oriented Pathways as an abstraction layer and user interface to more easily query KGs and store, rank and explore query results. Availability and implementation An instance of the ROBOKOP UI for exploration of the ROBOKOP Knowledge Graph can be found at http://robokop.renci.org. The ROBOKOP Knowledge Graph can be accessed at http://robokopkg.renci.org. Code and instructions for building and deploying ROBOKOP are available under the MIT open software license from https://github.com/NCATS-Gamma/robokop. Supplementary information Supplementary data are available at Bioinformatics online.

scholarly journals Design and usability study of an iconic user interface to ease information retrieval of medical guidelines

2014 ◽  
Vol 21 (e2) ◽  
pp. e270-e277 ◽  
Author(s):  
N. Griffon ◽  
G. Kerdelhue ◽  
S. Hamek ◽  
S. Hassler ◽  
C. Boog ◽  
...  
Keyword(s):  
Information Retrieval ◽  
User Interface ◽  
Usability Study ◽  
Medical Guidelines

Pictorial Navigation Aids for Electronic Picture Displays on Digital Cameras

1998 ◽  
Vol 42 (6) ◽  
pp. 574-578
Author(s):  
Prasad Prabhu ◽  
Michael Miller ◽  
Carolyn Bussi ◽  
Sarah Bartoo
Keyword(s):  
User Interface ◽  
Graphical User Interface ◽  
Digital Cameras ◽  
Usability Study ◽  
Optimal Parameters

Many of today's digital cameras allow the user to review the pictures they have captured on an LCD on the back of the camera. These cameras are capable of storing numerous pictures which the user may navigate through to share ideas, concepts, or memories with others. In this paper we present two graphical user interface concepts that were designed to provide navigation aids on Kodak digital cameras. A study is described which utilized prototypes to test the concepts before they were implemented into a product. This usability study allowed the designers to select optimal parameters for these navigation aids, including recommended picture sizes and the number of pictures to be displayed within a navigation aid that is based on a film strip metaphor.

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