A Pilot Crowdsourced City Governance System: CITY FEED. - Linlin You; Gianmario Motta; Kaixu Liu; Tianyi Ma (CSE, 2014)

A Threefold Similarity Analysis of Crowdsourcing Feeds. - Kaixu Liu; Gianmario Motta; Linlin You; Tianyi Ma (ICSS, 2015)

Personal Mobility Service System in Urban Areas: The IRMA Project. - Gianmario Motta; Daniele Sacco; Tianyi Ma; Linlin You; Kaixu Liu (SOSE, 2015)

XYZ Indoor Navigation through Augmented Reality: A Research in Progress. - Kaixu Liu; Gianmario Motta; Tianyi Ma (SCC, 2016)

MOBANA: A Distributed Stream-Based Information System for Public Transit. - Tianyi Ma; Gianmario Motta; Kaixu Liu; Dongmeng Liu (SCC, 2016)

Navigation Services for Indoor and Outdoor User Mobility: An Overview. - Kaixu Liu; Gianmario Motta; Tianyi Ma (ICSS, 2016)

Multi-floor Indoor Navigation with Geomagnetic Field Positioning and Ant Colony Optimization Algorithm. - Kaixu Liu; Gianmario Motta; Tianyi Ma; Tao Guo (SOSE, 2016)

CITY FEED: A Pilot System of Citizen-Sourcing for City Issue Management. - Linlin You; Gianmario Motta; Kaixu Liu; Tianyi Ma (ACM Trans. Intell. Syst. Technol., 2016)

Wi-Fi-Aided Magnetic Field Positioning with Floor Estimation in Indoor Multi-Floor Navigation Services. - Kaixu Liu; Gianmario Motta; Juncheng Dong (ICIOT, 2017)

An Analysis of Social Data Credibility for Services Systems in Smart Cities - Credibility Assessment and Classification of Tweets. - Iman Abu Hashish; Gianmario Motta; Tianyi Ma; Kaixu Liu (IISSC/CN4IoT, 2017)

A 2D and 3D Indoor Mapping Approach for Virtual Navigation Services. - Kaixu Liu; Gianmario Motta; Bige Tunçer; Iman Abuhashish (SOSE, 2017)

NavApp: An indoor navigation application: A smartphone application for libraries. - Iman Abu Hashish; Gianmario Motta; Michela Meazza; Guoqing Bu; Kaixu Liu; Lorenzo Duico; Antonella Longo (WPNC, 2017)

Delivering Real-Time Information Services on Public Transit: A Framework. - Tianyi Ma; Gianmario Motta; Kaixu Liu (IEEE Trans. Intell. Transp. Syst., 2017)

Sentiment analysis and spam detection in short informal text using learning classifier systems. - Muhammad Hassan Arif; Jianxin Li 002; Muhammad Iqbal 001; Kaixu Liu (Soft Comput., 2018)

Threefold similarity analysis: a case study on crowdsourcing feeds. - Kaixu Liu; Gianmario Motta; Tianyi Ma; Ke Fan (Int. J. Inf. Technol. Manag., 2019)

Research on Multi-Terminal's AC Offloading Scheme and Multi-Server's AC Selection Scheme in IoT. - Jiemei Liu; Fei Lin; Kaixu Liu; Yingxue Zhao; Jun Li (Entropy, 2022)