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ACM Transactions on Information Systems (TOIS), Volume 35 Issue 1, October 2016

Accounting for Language Changes Over Time in Document Similarity Search
Sara Morsy, George Karypis
Article No.: 1
DOI: 10.1145/2934671

Given a query document, ranking the documents in a collection based on how similar they are to the query is an essential task with extensive applications. For collections that contain documents whose creation dates span several decades, this task...

The Effects of Aggregated Search Coherence on Search Behavior
Jaime Arguello, Rob Capra
Article No.: 2
DOI: 10.1145/2935747

Aggregated search is the task of combining results from multiple independent search systems in a single Search Engine Results Page (SERP). Aggregated search coherence refers to the extent to which different sources on the SERP focus on similar...

Causal Relationship Detection in Archival Collections of Product Reviews for Understanding Technology Evolution
Yating Zhang, Adam Jatowt, Katsumi Tanaka
Article No.: 3
DOI: 10.1145/2937752

Technology progress is one of the key reasons behind today's rapid changes in lifestyles. Knowing how products and objects evolve can not only help with understanding the evolutionary patterns in our society but can also provide clues on effective...

Social Question Answering: Textual, User, and Network Features for Best Answer Prediction
Piero Molino, Luca Maria Aiello, Pasquale Lops
Article No.: 4
DOI: 10.1145/2948063

Community question answering (CQA) sites use a collaborative paradigm to satisfy complex information needs. Although the task of matching questions to their best answers has been tackled for more than a decade, the social question-answering...

Trip Recommendation Meets Real-World Constraints: POI Availability, Diversity, and Traveling Time Uncertainty
Chenyi Zhang, Hongwei Liang, Ke Wang
Article No.: 5
DOI: 10.1145/2948065

As location-based social network (LBSN) services become increasingly popular, trip recommendation that recommends a sequence of points of interest (POIs) to visit for a user emerges as one of many important applications of LBSNs....

Answering Arabic Why-Questions: Baseline vs. RST-Based Approach
Aqil M. Azmi, Nouf A. Alshenaifi
Article No.: 6
DOI: 10.1145/2950049

A Question Answering (QA) system is concerned with building a system that automatically answer questions posed by humans in a natural language. Compared to other languages, little effort was directed towards QA systems for Arabic. Due to the...

A Meta-Framework for Modeling the Human Reading Process in Sentiment Analysis
Ramy Baly, Roula Hobeica, Hazem Hajj, Wassim El-Hajj, Khaled Bashir Shaban, Ahmad Al-Sallab
Article No.: 7
DOI: 10.1145/2950050

This article introduces a sentiment analysis approach that adopts the way humans read, interpret, and extract sentiment from text. Our motivation builds on the assumption that human interpretation should lead to the most accurate assessment of...

A Probabilistic Lifestyle-Based Trajectory Model for Social Strength Inference from Human Trajectory Data
Wayne Xin Zhao, Ningnan Zhou, Wenhui Zhang, Ji-Rong Wen, Shan Wang, Edward Y. Chang
Article No.: 8
DOI: 10.1145/2948064

With the pervasiveness of location-based social networks, it becomes increasingly important to consider the social characteristics of locations shared among persons. Several studies have been proposed to infer social strength by using trajectory...