J. Liu

Publications91
h-index12
Citations477
Highly Influential Citations6
Author pages are created from data sourced from our academic publisher partnerships and public sources.

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What Becomes of the Broken Hearted?: An Agent-Based Approach to Self-Evaluation, Interpersonal Loss, and Suicide Ideation
TLDR
A model that is consistent with social psychological theories and connects individuals' emotional states with their social relations is proposed, using a centrality-based measure of self-evaluation to quantify the amount of interpersonal loss experienced by agents as theirsocial relations change. Expand
Distributed Community Detection over Blockchain Networks Based on Structural Entropy
TLDR
A distributed community detection method based on the Propose-Select-Adjust (PSA) framework that runs in an asynchronous way and successfully detects communities with low structural entropy is proposed. Expand
MANDY: Towards a Smart Primary Care Chatbot Application
TLDR
A proof-of-concept of \(\mathsf {Mandy}\), a primary care chatbot system created to assist healthcare staffs by automating the patient intake process, which combines data-driven natural language processing capability with knowledge-driven diagnostic capability. Expand
REM: From Structural Entropy to Community Structure Deception
TLDR
This paper proposes a community-based structural entropy to express the amount of information revealed by a community structure and devise residual entropy minimization (REM) as an efficient procedure to solve CSD. Expand
HHH: An Online Medical Chatbot System based on Knowledge Graph and Hierarchical Bi-Directional Attention
TLDR
This paper builds HHH, an online question-and-answer (QA) Healthcare Helper system for answering complex medical questions, and proposes a chatbot framework that adopts a hybrid model which consists of a knowledge graph and a text similarity model. Expand
From the Periphery to the Center: Information Brokerage in an Evolving Network
TLDR
This paper proposes three tactics and shows their superior performance over alternative methods on four real-world datasets and four network models, proving that a winning tactic always exists for certain types of network dynamics. Expand
Decision Problems for Finite Automata over Infinite Algebraic Structures
TLDR
Several decidability and undecidability results are proved and the way the finite automata model connects with the existential first order theory of algebraic structures is explained. Expand
Blockchain-based anomaly detection of electricity consumption in smart grids
TLDR
This article presents a new framework that aims to detect electricity consumption anomalies accurately and timely using sensor processing, smart meter readings, machine learning and blockchain. Expand
How to Build Your Network? A Structural Analysis
TLDR
It is proved that obtaining optimal solutions to this problem is NP-complete, and several efficient algorithms to solve this problem are presented and compared with each other. Expand
Dynamic Relationship Building: Exploitation Versus Exploration on a Social Network
TLDR
This work asks the question: How would an individual build relations with members of a dynamic social network in order to arrive at a central position in the network, and formalizes this question using the dynamic network building problem. Expand
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