Journals

Selected Publications

 

Apostolos Filippas, Theodoros Lappas
Strength in Numbers: Using Big Data to Simplify Sentiment Classi cation
Minor Revision in Big Data

 

Georgios Valkans, Theodoros Lappas, and Dimitrios Gunopulos
Mining Competitors from Large Unstructured Datasets
IEEE Transactions on Knowledge and Data Engineering

 

Theodoros Lappas, Gaurav Sabnis, and Georgios Valkanas
The Impact of Fake Reviews on Online Visibility: A Vulnerability Assessment of the Hotel Industry.
Information Systems Research journal.

Video Summary

INFORMS Journal Highlights,  November 2016 (Interview)

Article @Stevens News

 

Serhan Kotiloglu, Theodoros Lappas , Kostantinos Pelechrinis, Panagiotis P.Repoussis
Personalized multi-period tour recommendations
Tourism Management.

 

Ke Zhang, Theodoros Lappas , Kostantinos Pelechrinis
Effects of Promotions on Location-Based Social Media: Evidence from Foursquare
Accepted, International Journal of Electronic Commerce.

Post Gazzette

Pitt News

Wesa FM

 

Pei Yang, Hongxia Yang, Haoda Fu, Dawei Zhou, Jieping Ye, Theodoros Lappas, and Jingrui He
Jointly Modeling Label and Feature Heterogeneity in Medical Informatics
Transactions on Knowledge Discovery from Data, 2015

 

Dimitrios Kotzias, Theodoros Lappas, Dimitrios Gunopulos
Home is Where your Friends Are: Utilizing the Social Graph to Locate Twitter Users in a City.
Elsevier’s Information Systems, 2015.

 

Under Review

Reputation and Contribution in Online Question-Answering Communities
with Chris Dellarocas and Neda Derakhshani.

User Activation, Deactivation and Online Community Welfare
with Marios Kokkodis and Sam Ransbotham

 

Working Papers

Apples and Oranges: Challenging the Spatial Homogeneity of Online Reviews
with Marios Kokkodis and Kostantinos Pelechrinis.

The Guided Team-Partitioning Problem: Definition, Complexity, and Algorithm
with Sanaz Bahargam and Evimaria Terzi

Importance of Interaction between Content Characteristics and Creator Charactertics for Studying Virality in Social Media with Gaurav Sabnis and Yue Han.