• Security informatics, security big data; smart and connected health, health analytics; data, text, web mining.
• Digital library, intelligent information retrieval, automatic categorization and classification, machine learning for IR, large-scale information analysis and visualization.
• Internet resource discovery, digital libraries, IR for large-scale scientific and business databases, customized IR, multilingual IR.
• Knowledge-based systems design, knowledge discovery in databases, hypertext systems, machine learning, neural networks computing, genetic algorithms, simulated annealing.
• Cognitive modeling, human-computer interactions, IR behaviors, human problem-solving process.
