Lecture Notes in Computer Science 10772

Commenced Publication in 1973Founding and Former Series Editors:Gerhard Goos, Juris Hartmanis, and Jan van Leeuwen

Editorial Board

David HutchisonLancaster University, Lancaster, UK

Takeo KanadeCarnegie Mellon University, Pittsburgh, PA, USA

Josef KittlerUniversity of Surrey, Guildford, UK

Jon M. KleinbergCornell University, Ithaca, NY, USA

Friedemann MatternETH Zurich, Zurich, Switzerland

John C. MitchellStanford University, Stanford, CA, USA

Moni NaorWeizmann Institute of Science, Rehovot, Israel

C. Pandu RanganIndian Institute of Technology, Madras, India

Bernhard SteffenTU Dortmund University, Dortmund, Germany

Demetri TerzopoulosUniversity of California, Los Angeles, CA, USA

Doug TygarUniversity of California, Berkeley, CA, USA

Gerhard WeikumMax Planck Institute for Informatics, Saarbrücken, Germany

More information about this series at http://www.springer.com/series/7409

Gabriella Pasi • Benjamin PiwowarskiLeif Azzopardi • Allan Hanbury (Eds.)

Advances inInformation Retrieval40th European Conference on IR Research, ECIR 2018Grenoble, France, March 26–29, 2018Proceedings

123

EditorsGabriella PasiDepartment of Informatics, Systems,and Communication

University of Milano-BicoccaMilanItaly

Benjamin PiwowarskiLIP6 – UPMC/CNRSUniversity Pierre et Marie CurieParisFrance

Leif AzzopardiUniversity of GlasgowGlasgowUK

Allan HanburyTechnical University of ViennaViennaAustria

ISSN 0302-9743 ISSN 1611-3349 (electronic)Lecture Notes in Computer ScienceISBN 978-3-319-76940-0 ISBN 978-3-319-76941-7 (eBook)https://doi.org/10.1007/978-3-319-76941-7

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Preface

These proceedings contain the papers presented at ECIR 2018, the 40th EuropeanConference on Information Retrieval. The conference is organized by the Laboratoired’Informatique de Grenoble (LIG), in cooperation with the Information RetrievalSpecialist Group of the British Computer Society (BCS-IRSG). It was supported by theSpecial Interest Group on Information Retrieval (ACM SIGIR), and the FrenchAssociation of Information Retrieval (ARIA).

ECIR 2018 received 171 full paper and 112 short paper submissions. All submittedpapers were reviewed by at least three members of the international Program Com-mittee. In all, 39 full papers (23%) were accepted for oral presentation and 39 shortpapers (35%) were accepted for poster presentation. The accepted papers come fromuniversities, research institutes, and/or commercial organizations. The traditional strongfocus on students was maintained with a student mentoring program and a student grantprogram.

Accepted papers cover the state of the art in information retrieval including topicssuch as: topic modeling, deep learning, evaluation, user behavior, document repre-sentation, recommendation systems, retrieval methods, learning and classification, andmicro-blogs.

The success of such a conference is made possible only by the huge effort of severalpeople and organizations. We wish to thank our various committees – for full papers,short papers, demonstrations, tutorials, workshops and awards – for their hard workensuring the quality of the ECIR 2018 program. We thank the researchers who sub-mitted their work. We also wish to thank the student mentoring chairs, the student grantchairs, the sponsor chairs, the publicity chairs, the proceedings chairs, the industry daychairs, and the website chair.

We thank our sponsoring institutions, Naver Labs, Google, Université GrenobleAlpes, Grenoble INP, Grenoble Alpes Data Institute, Grenoble Alpes Métropole, LabexPersyval, ARIA, SIGIR, and Springer for their support of ECIR 2018. We are alsograteful to our three keynote speakers.

Our final thanks are for the members of the local Organizing Committee for theirhard work over many months and to the local and student volunteers who contributedto a smooth running of ECIR 2018.

March 2018 Gabriella PasiBenjamin Piwowarski

Leif AzzopardiAllan Hanbury

Organization

General Chairs

Éric Gaussier University of Grenoble Alpes, FranceLorraine Goeuriot University of Grenoble Alpes, FranceGeorges Quénot CNRS, France

Program Chairs

Gabriella Pasi University of Milano-Bicocca, ItalyBenjamin Piwowarski CNRS, France

Short Papers and Poster Chairs

Leif Azzopardi University of Glasgow, UKAllan Hanbury Technical University of Vienna, Austria

Workshop Chairs

Elaine Toms University of Sheffield, UKJian-Yun Nie University of Montréal, Canada

Tutorial Chairs

Claudia Hauff DEFT, The NetherlandsMohand Boughanem University of Toulouse, France

Demo Chairs

Jean-Pierre Chevallet University of Grenoble Alpes, FranceJaap Kamps University of Amsterdam, The Netherlands

Industry Day Chairs

Gabriella Kazai Lumi, UKMiguel Martinez Signal Media, UK

Proceedings Chairs

Philippe Mulhem CNRS, FranceMichel Beigbeder École Nationale Supérieure des Mines de Saint-Étienne,

France

Publicity Chairs

Laure Soulier University of Paris 6, FranceIngo Frommholz University of Bedfordshire, UK

Sponsor Chairs

Massih-Reza Amini University of Grenoble Alpes, FrancePatrice Bellot Université Aix-Marseille, FrancePavel Braslavski Ural Federal University, Russia

Student Mentoring Chairs

Jacques Savoy University of Neuchâtel, SwitzerlandMihai Lupu Vienna University of Technology, Austria

Student Grant Chairs

Fabio Crestani University of Lugano (USI), SwitzerlandJosiane Mothe University of Toulouse, France

Website Infrastructure

Christophe Brouard University of Grenoble Alpes, France

Program Committee

Ahlers Dirk Norwegian University of Science and Technology,Norway

Albakour M-Dyaa Signal Media, UKAlonso Omar Microsoft, USAAmati Giambattista Fondazione Ugo Bordoni, ItalyAmini Massih-Reza LIG, FranceAndersson Linda Vienna University of Technology, AustriaArampatzis Avi Democritus University of Thrace, GreeceArapakis Ioannis Telefonica Research, SpainArguello Jaime The University of North Carolina at Chapel Hill, USALeif Azzopardi University of Strathclyde, UKBalog Krisztian University of Stavanger, NorwayBarreiro Alvaro University of A Coruña, SpainBasili Roberto University of Rome Tor Vergata, ItalyBellogin Alejandro Universidad Autonoma de Madrid, SpainBellot Patrice Aix-Marseille Université - CNRS (LSIS), FranceBerrut Catherine LIG, Université Grenoble Alpes, FranceBordogna Gloria National Research Council of Italy - CNR, ItalyBoughanem Mohand IRIT, Université Paul Sabatier Toulouse, France

VIII Organization

Bozzon Alessandro Delft University of Technology, The NetherlandsBraslavski Pavel Ural Federal University, RussiaBuitelaar Paul Insight Centre for Data Analytics, National University

of Ireland Galway, IrelandCabanac Guillaume IRIT, Université Paul Sabatier Toulouse 3, FranceCacheda Fidel Universidad de A Coruña, SpainCalabretto Sylvie LIRIS, FranceCalado Pável Universidade de Lisboa, PortugalCambazoglu B. Barla NTENT Inc., SpainCan Fazli Bilkent University, TurkeyCarpineto Claudio Fondazione Ugo Bordoni, ItalyCastells Pablo Universidad Autónoma de Madrid, SpainChevalier Max IRIT, FranceChen Long University of Glasgow, UKCorney David Signal Media, UKCrestani Fabio University of Lugano (USI), SwitzerlandCroft Bruce University of Massachusetts Amherst, USACummins Ronan University of Cambridge, UKDe Cock Martine University of Washington, USAde La Fuente Pablo Universidad de Valladolid, Spainde Rijke Maarten University of Amsterdam, The Netherlandsde Vries Arjen Radboud University, The NetherlandsDi Buccio Emanuele University of Padua, ItalyDietz Laura University of New Hampshire, UKDi Nunzio Giorgio

MariaUniversity of Padua, Italy

Dixon Julie University of Aberdeen, UKDuan Huizhong WalmartLabs, USAEickhoff Carsten ETH Zurich, SwitzerlandFang Hui University of Delaware, USAFernández-Luna Juan M. University of Granada, SpainFerro Nicola University of Padua, ItalyFreire Ana Universitat Pompeu Fabra, SpainFrommholz Ingo University of Bedfordshire, UKFuhr Norbert University of Duisburg-Essen, GermanyGallinari Patrick LIP6 - University of Paris 6, FranceGanesan Kavita UIUC, USAGiannopoulos Giorgos Imis Institute, Athena R.C., GreeceGoeuriot Lorraine Laboratoire d’informatique de Grenoble, FranceGonzalo Julio UNED, SpainGranitzer Michael University of Passau, GermanyGrau Brigitte LIMSI, CNRS, ENSIIE, Université Paris-Saclay, FranceGravier Guillaume CNRS, IRISA, FranceGurrin Cathal DCU, IrelandHagen Matthias Bauhaus-Universität Weimar, GermanyHanbury Allan Vienna University of Technology, Austria

Organization IX

Hansen Preben Stockholm University, SwedenHarman Donna NIST, USAHauff Claudia Delft University of Technology, The NetherlandsHe Ben University of Chinese Academy of Sciences, ChinaHe Daqing University of Pittsburgh, USAHiemstra Djoerd University of Twente, The NetherlandsHopfgartner Frank University of Glasgow, UKHotho Andreas University of Würzburg, GermanyHubert Gilles IRIT, FranceIgnatov Dmitry National Research University Higher School

of Economics, RussiaIonescu Radu Tudor University of Bucharest, RomaniaJialie Shen Northumbria University, UKJiang Jiepu College of Information and Computer Sciences,

University of Massachusetts Amherst, USAJoho Hideo University of Tsukuba, JapanJones Gareth Dublin City University, IrelandJose Joemon University of Glasgow, UKKarlgren Jussi Gavagai and KTH, SwedenKamps Jaap UA, The NetherlandsKanoulas Evangelos University of Amsterdam, The NetherlandsKazai Gabriella Microsoft, UKKekäläinen Jaana University of Tampere, FinlandKelly Diane University of Tennessee, UKKelly Liadh Maynooth University, IrelandKompatsiaris Yiannis CERTH - ITI, GreeceKruschwitz Udo University of Essex, UKKurland Oren Technion, Israel Institute of Technology, IsraelLaporte Léa INSA Lyon - LIRIS, FranceLarsen Birger Aalborg University, DenmarkLee Kyumin Worcester Polytechnic Institute, UKLiddy Liz Center for Natural Language Processing,

Syracuse University, USALioma Christina University of Copenhagen, DenmarkLosada David University of Santiago de Compostela, SpainLupu Mihai Vienna University of Technology, AustriaMacdonald Craig University of Glasgow, UKMacfarlane Andrew City University London, UKMagdy Walid The University of Edinburgh, UKMaggini Marco University of Siena, ItalyMandl Thomas University of Hildesheim, GermanyMarchand-Maillet

StéphaneViper Group - University of Geneva, Switzerland

Markov Ilya University of Amsterdam, The NetherlandsMartinez-Alvarez

MiguelSignal, UK

X Organization

Martins Bruno IST - Instituto Superior Técnico, PortugalMass Yosi IBM Haifa Research Lab, IsraelMccreadie Richard University of Glasgow, UKMeij Edgar Bloomberg L.P., UKMelucci Massimo University of Padua, ItalyMendoza Marcelo Universidad Técnica Federico Santa María, ChileMicarelli Alessandro Roma Tre University, ItalyMizzaro Stefano University of Udine, ItalyMoshfeghi Yashar University of Strathclyde, UKMothe Josiane Institut de Recherche en Informatique de Toulouse, FranceMoussa Samir Signal Media, UKMulhem Philippe LIG-CNRS, FranceMüller Henning HES-SO, SwitzerlandNardini Franco Maria ISTI-CNR, ItalyNejdl Wolfgang L3S and University of Hannover, GermanyNguyen Dong University of Twente, The NetherlandsNie Jian-Yun University of Montreal, CanadaNuernberger Andreas Otto von Guericke University of Magdeburg, GermanyOakes Michael University of Wolverhampton, UKOrlando Salvatore Università Ca’ Foscari Venezia, ItalyOunis Iadh University of Glasgow, UKP Deepak Queen’s University Belfast, UKPasi Gabriella Università degli Studi di Milano Bicocca, ItalyPavlu Virgil Northeastern University, UKPecina Pavel Charles University in Prague, Czech RepublicPerego Raffaele ISTI-CNR, ItalyPetras Vivien HU Berlin, GermanyPinel-Sauvagnat Karen IRIT, FrancePiroi Florina Vienna University of Technology, ISIS, IFS, AustriaPiwowarski Benjamin CNRS/Pierre et Marie Curie University, FrancePlachouras Vassilis Thomson Reuters, UKQuénot Georges Laboratoire d’Informatique de Grenoble, CNRS, FranceRosso Paolo Universitat Politècnica de València, SpainRoussinov Dmitri University of Strathclyde, UKRueger Stefan Knowledge Media Institute, UKRussell-Rose Tony UXLabs, UKSaid Alan University of Skövde, SwedenSantos Rodrygo Universidade Federal de Minas Gerais, BrazilSebastiani Fabrizio Qatar Computing Research Institute, QatarSébillot Pascale IRISA, FranceSedes Florence IRIT P. Sabatier University, FranceSemeraro Giovanni University of Bari, ItalySerdyukov Pavel Yandex, RussiaShakery Azadeh University of Tehran, IranSormunsen Eero University of Tampere, Finland

Organization XI

Soulier Laure Sorbonne Universités UPMC-LIP6, FranceTamine Lynda IRIT, FranceTombros Anastasios Queen Mary University of London, UKTonellotto Nicola ISTI-CNR, ItalyTsai Ming-Feng National Chengchi University, TaiwanTsikrika Theodora Information Technologies Institute, CERTH, GreeceTzitzikas Yannis University of Crete and FORTH-ICS, GreeceVargas Saúl Mendeley Ltd., UKVelupillai Sumithra TCS, KTH Royal Institute of Technology, SwedenVerberne Suzan LIACS, Leiden University, The NetherlandsViviani Marco Università degli Studi di Milano-Bicocca - DISCo, ItalyVrochidis Stefanos Information Technologies Institute, GreeceWomser-Hacker Christa University of Hildesheim, GermanyYang Tao Ask.com and UCSB, USAYu Hai-Tao University of Tsukuba, JapanZuccon Guido Queensland University of Technology, Australia

Additional Reviewers

AvgerinakisKonstantinos

Information Technologies Institute, Greece

Banerjee Somnath Jadavpur University, IndiaBasile Pierpaolo Aldo Moro University, ItalyBiancalana Claudio Roma Tre University, ItalyBibaev Vitaly Saint Petersburg Academic University, RussiaBlinov Vladislav Ural Federal University, RussiaCampillos Llanos

LeonardoLIMSI, France

Carvalho André Lisbon University, PortugalChakravarthi Bharathi

RajaInsight, Ireland

Corney David University of London, UKDaudert Tobias Insight, IrelandDelasalles Edouard LIP6, FranceDias Charles-Emmanuel LIP6, FranceDos Santos Ludovic LIP6, FranceEffrosynidis Dimitrios Democritus University of Thrace, GreeceElbeshausen Stefanie Hildesheim University, GermanyFarnadi Golnoosh University of California Santa Cruz, USAGaede Maria IBI, GermanyGasparetti Fabio Roma Tre University, ItalyGialampoukidis Ilias ITI, GreeceGossen Tatiana Magdeburg University, GermanyHansen Casper University of Copenhagen, DenmarkHoang Thi Bich Ngoc IRIT, FranceIvanschitz Bernd Research Studios, Austria

XII Organization

Ji Shiyu University of California, Santa Barbara, USAJurgovsky Johannes Passau University, GermanyKamateri Eleni ITI, GreeceKiesel Johannes Weimar University, GermanyKotzyba Michael Magdeburg University, GermanyLaclau Charlotte University of Grenoble Alpes, FranceLamrayah Mehdi LIP6, FranceLandín Alfonso University of A Coruña, SpainLi Wei DCU, IrelandLionakis Panagiotis University of Crete, CreteLow Thomas Magdeburg University, GermanyMarra Giuseppe DIIES, ItalyMavropoulos Thanassis ITI, GreeceMcCreadie Richard Glasgow University, UKMelo Tiago INESC-ID, PortugalMountantonakis

MichalisUniversity of Crete, Crete

Muntean Cristina ISTI, ItalyMusto Cataldo Bari University, ItalyNarducci Fedelucio Bari University, ItalyNiebler Thomas University of Würzburg, GermanyPajot Arthur LIP6, FrancePalotti Joao Vienna University of Technology, AustriaPapantoniou Katerina University of Crete, CreteParapar Javier University of A Coruña, SpainPerez Estruch Carlos PRLHT, SpainPortier Pierre-Edouard Insa de Lyon, FranceRecalde Lorena Pompeu Fabra University, SpainRoitero Kevin Udine University, ItalyRossiello Gaetano Bari University, ItalyRubtsova Yuliya Novosibirsk State University, RussiaSchinas Manos ITI, GreeceSchlör Daniel University of Würzburg, GermanySchlötterer Jörg Passau University, GermanySchwerdt Johannes Magdeburg University, GermanySgontzos Konstantinos University of Crete, CreteShao Jinji University of California, Santa Barbara, USASpitz Andreas Heidelberg University, GermanySushmita Shanu University of Washington, USASyed Shahbaz Weimar University, GermanySymeonidis Symeon Democritus University of Thrace, GreeceThiel Marcus Magdeburg University, GermanyTrani Roberto ISTI, ItalyTsikrika Theodora ITI, GreeceValcarce Daniel University of A Coruña, SpainVezzani Federic Padua University, Italy

Organization XIII

Voelske Michael Weimar University, GermanyWang Bingyu Northeastern University, USAWatt Stuart Turalt, CanadaYang Liu University of Massachusetts, USAYang Peilin University of Delaware, USAYu Haitao University of Tsukuba, JapanZablocki Éloi LIP6, FranceZamani Hamed University of Massachusetts, USAZampoglou Markos ITI, GreeceZayed Omnia Insight, IrelandZehe Albin University of Würzburg, GermanyZhao Haozhen Legal Technology Solutions, USAZlabinger Markus Vienna University of Technology, AustriaZoller Daniel University of Würzburg, GermanyZuccon Guido Queensland University of Technology, Australia

Sponsors

Silver Sponsors

Grenoble Data Institute

Naver Labs

Persyval Lab

XIV Organization

ACM SIGIR

Bronze Sponsors

ARIA

Google

Grenoble Alpes Métropole

Organization XV

Grenoble INP

Springer

Université Grenoble Alpes

XVI Organization

Contents

Topic Modelling

Entity-Centric Topic Extraction and Exploration:A Network-Based Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Andreas Spitz and Michael Gertz

Predicting Topics in Scholarly Papers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Seyed Ali Bahrainian, Ida Mele, and Fabio Crestani

Topic Lifecycle on Social Networks: Analyzing the Effectsof Semantic Continuity and Social Communities . . . . . . . . . . . . . . . . . . . . . 29

Kuntal Dey, Saroj Kaushik, Kritika Garg, and Ritvik Shrivastava

Health Applications

Medical Forum Question Classification Using Deep Learning . . . . . . . . . . . . 45Raksha Jalan, Manish Gupta, and Vasudeva Varma

Multi-task Learning for Extraction of Adverse Drug ReactionMentions from Tweets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Shashank Gupta, Manish Gupta, Vasudeva Varma, Sachin Pawar,Nitin Ramrakhiyani, and Girish Keshav Palshikar

Choices in Knowledge-Base Retrieval for Consumer Health Search. . . . . . . . 72Jimmy, Guido Zuccon, and Bevan Koopman

Deep Learning

An Adversarial Joint Learning Model for Low-Resource LanguageSemantic Textual Similarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Junfeng Tian, Man Lan, Yuanbin Wu, Jingang Wang, Long Qiu,Sheng Li, Lang Jun, and Luo Si

Reproducing a Neural Question Answering Architecture Appliedto the SQuAD Benchmark Dataset: Challenges and Lessons Learned. . . . . . . 102

Alexander Dür, Andreas Rauber, and Peter Filzmoser

Bringing Back Structure to Free Text Email Conversationswith Recurrent Neural Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Tim Repke and Ralf Krestel

A Hybrid Embedding Approach to Noisy Answer Passage Retrieval . . . . . . . 127Daniel Cohen and W. Bruce Croft

Deep Learning for Detecting Cyberbullying Across Multiple SocialMedia Platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Sweta Agrawal and Amit Awekar

Affective Neural Response Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154Nabiha Asghar, Pascal Poupart, Jesse Hoey, Xin Jiang,and Lili Mou

Web2Text: Deep Structured Boilerplate Removal . . . . . . . . . . . . . . . . . . . . 167Thijs Vogels, Octavian-Eugen Ganea, and Carsten Eickhoff

Attention-Based Neural Text Segmentation. . . . . . . . . . . . . . . . . . . . . . . . . 180Pinkesh Badjatiya, Litton J. Kurisinkel, Manish Gupta,and Vasudeva Varma

Evaluations and User Behavior

Modelling Randomness in Relevance Judgmentsand Evaluation Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

Marco Ferrante, Nicola Ferro, and Silvia Pontarollo

Information Scent, Searching and Stopping: Modelling SERP LevelStopping Behaviour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

David Maxwell and Leif Azzopardi

Investigating Result Usefulness in Mobile Search . . . . . . . . . . . . . . . . . . . . 223Jiaxin Mao, Yiqun Liu, Noriko Kando, Cheng Luo,Min Zhang, and Shaoping Ma

A Comparative Study of Native and Non-native InformationSeeking Behaviours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

David Brazier and Morgan Harvey

Representation

Indiscriminateness in Representation Spaces of Terms and Documents. . . . . . 251Vincent Claveau

On the Reproducibility and Generalisation of the Linear Transformationof Word Embeddings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263

Xiao Yang, Iadh Ounis, Richard McCreadie, Craig Macdonald,and Anjie Fang

XVIII Contents

Discriminative Path-Based Knowledge Graph Embedding for PreciseLink Prediction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276

Maoyuan Zhang, Qi Wang, Wukui Xu, Wei Li, and Shuyuan Sun

Spherical Paragraph Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289Ruqing Zhang, Jiafeng Guo, Yanyan Lan, Jun Xu, and Xueqi Cheng

Aggregating Neural Word Embeddings for Document Representation . . . . . . 303Ruqing Zhang, Jiafeng Guo, Yanyan Lan, Jun Xu, and Xueqi Cheng

Unsupervised Sentiment Analysis of Twitter Posts Using DensityMatrix Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316

Yazhou Zhang, Dawei Song, Xiang Li, and Peng Zhang

Recommendation

Explicit Modelling of the Implicit Short Term User Preferencesfor Music Recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333

Kartik Gupta, Noveen Sachdeva, and Vikram Pudi

Benefits of Using Symmetric Loss in Recommender Systems . . . . . . . . . . . . 345Gaurav Singh and Sandra Mitrović

Time-Aware Novelty Metrics for Recommender Systems . . . . . . . . . . . . . . . 357Pablo Sánchez and Alejandro Bellogín

Employing Document Embeddings to Solve the “New Catalog” Problemin User Targeting, and Provide Explanations to the Users . . . . . . . . . . . . . . 371

Ludovico Boratto, Salvatore Carta, Gianni Fenu, and Luca Piras

Retrieval

Statistical Stemmers: A Reproducibility Study . . . . . . . . . . . . . . . . . . . . . . 385Gianmaria Silvello, Riccardo Bucco, Giulio Busato, Giacomo Fornari,Andrea Langeli, Alberto Purpura, Giacomo Rocco, Alessandro Tezza,and Maristella Agosti

Cross-Lingual Document Retrieval Using RegularizedWasserstein Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398

Georgios Balikas, Charlotte Laclau, Ievgen Redko,and Massih-Reza Amini

T-Shaped Mining: A Novel Approach to Talent Findingfor Agile Software Teams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411

Sajad Sotudeh Gharebagh, Peyman Rostami, and Mahmood Neshati

Contents XIX

Modeling Relevance Judgement Inspired by Quantum Weak Measurement. . . 424Panpan Wang, Tianshu Wang, Yuexian Hou, and Dawei Song

Learning/Classification

Active Learning Strategies for Technology Assisted Sensitivity Review . . . . . 439Graham McDonald, Craig Macdonald, and Iadh Ounis

Authorship Verification in the Absence of Explicit Featuresand Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 454

Oren Halvani, Lukas Graner, and Inna Vogel

Efficient Context-Aware K-Nearest Neighbor Search . . . . . . . . . . . . . . . . . . 466Mostafa Haghir Chehreghani and Morteza Haghir Chehreghani

Micro-blogs

An Optimization Approach for Sub-event Detection and Summarizationin Twitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 481

Polykarpos Meladianos, Christos Xypolopoulos, Giannis Nikolentzos,and Michalis Vazirgiannis

Spatial Statistics of Term Co-occurrences for Location Predictionof Tweets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 494

Ozer Ozdikis, Heri Ramampiaro, and Kjetil Nørvåg

Learning to Leverage Microblog Information for QA Retrieval . . . . . . . . . . . 507Jose Herrera, Barbara Poblete, and Denis Parra

Short Papers

Biomedical Question Answering via Weighted Neural NetworkPassage Retrieval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 523

Ferenc Galkó and Carsten Eickhoff

Topical Stance Detection for Twitter: A Two-Phase LSTM ModelUsing Attention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 529

Kuntal Dey, Ritvik Shrivastava, and Saroj Kaushik

A Neural Passage Model for Ad-hoc Document Retrieval . . . . . . . . . . . . . . 537Qingyao Ai, Brendan O’Connor, and W. Bruce Croft

On the Cost of Negation for Dynamic Pruning . . . . . . . . . . . . . . . . . . . . . . 544Joel Mackenzie, Craig Macdonald, Falk Scholer,and J. Shane Culpepper

XX Contents

A Meta-Evaluation of Evaluation Methods for Diversified Search . . . . . . . . . 550Suneel Kumar Kingrani, Mark Levene, and Dell Zhang

Co-training for Extraction of Adverse Drug Reaction Mentionsfrom Tweets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 556

Shashank Gupta, Manish Gupta, Vasudeva Varma, Sachin Pawar,Nitin Ramrakhiyani, and Girish Keshav Palshikar

Concept Embedding for Information Retrieval . . . . . . . . . . . . . . . . . . . . . . 563Karam Abdulahhad

Patient-Age Extraction for Clinical Reports Retrieval . . . . . . . . . . . . . . . . . . 570Rúben Ramalho, André Mourão, and João Magalhães

Inverted List Caching for Topical Index Shards . . . . . . . . . . . . . . . . . . . . . 577Zhuyun Dai and Jamie Callan

ALF-200k: Towards Extensive Multimodal Analyses of Music Tracksand Playlists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 584

Eva Zangerle, Michael Tschuggnall, Stefan Wurzinger,and Günther Specht

Proposing Contextually Relevant Quotes for Images . . . . . . . . . . . . . . . . . . 591Shivali Goel, Rishi Madhok, and Shweta Garg

To Cite, or Not to Cite? Detecting Citation Contexts in Text . . . . . . . . . . . . 598Michael Färber, Alexander Thiemann, and Adam Jatowt

Automated Assistance in E-commerce: An Approach Basedon Category-Sensitive Retrieval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 604

Anirban Majumder, Abhay Pande, Kondalarao Vonteru,Abhishek Gangwar, Subhadeep Maji, Pankaj Bhatia, and Pawan Goyal

Neural Multi-step Reasoning for Question Answeringon Semi-structured Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 611

Till Haug, Octavian-Eugen Ganea, and Paulina Grnarova

Document Ranking Applied to Second Language Learning . . . . . . . . . . . . . 618Rodrigo Wilkens, Leonardo Zilio, and Cédrick Fairon

Generating High-Quality Query Suggestion Candidatesfor Task-Based Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625

Heng Ding, Shuo Zhang, Darío Garigliotti, and Krisztian Balog

An Incremental Approach for Collaborative Filteringin Streaming Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 632

Rama Syamala Sreepada and Bidyut Kr. Patra

Contents XXI

Collection-Document Summaries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 638Nils Witt, Michael Granitzer, and Christin Seifert

Towards an Understanding of Entity-Oriented Search Intents . . . . . . . . . . . . 644Darío Garigliotti and Krisztian Balog

Towards Measuring Content Coordination in Microblogs . . . . . . . . . . . . . . . 651Dmitri Roussinov

Long-Span Language Models for Query-Focused UnsupervisedExtractive Text Summarization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 657

Mittul Singh, Arunav Mishra, Youssef Oualil, Klaus Berberich,and Dietrich Klakow

Topic-Association Mining for User Interest Detection . . . . . . . . . . . . . . . . . 665Anil Kumar Trikha, Fattane Zarrinkalam, and Ebrahim Bagheri

A Study of an Automatic Stopping Strategy for TechnologicallyAssisted Medical Reviews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 672

Giorgio Maria Di Nunzio

Improving Deep Learning for Multiple Choice Question Answeringwith Candidate Contexts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 678

Bogdan Nicula, Stefan Ruseti, and Traian Rebedea

A Text Feature Based Automatic Keyword Extraction Methodfor Single Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 684

Ricardo Campos, Vítor Mangaravite, Arian Pasquali,Alípio Mário Jorge, Célia Nunes, and Adam Jatowt

Simplified Hybrid Approach for Detection of Semantic Orientationsin Economic Texts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 692

Jan Štihec, Martin Žnidaršič, and Senja Pollak

Towards Maximising Openness in Digital Sensitivity Review UsingReviewing Time Predictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 699

Graham McDonald, Craig Macdonald, and Iadh Ounis

Towards a Unified Supervised Approach for Ranking Triplesof Type-Like Relations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 707

Mahsa S. Shahshahani, Faegheh Hasibi, Hamed Zamani,and Azadeh Shakery

ParsTime: Rule-Based Extraction and Normalization of PersianTemporal Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 715

Behrooz Mansouri, Mohammad Sadegh Zahedi, Ricardo Campos,Mojgan Farhoodi, and Maseud Rahgozar

XXII Contents

Active Search for High Recall: A Non-stationary Extensionof Thompson Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 722

Jean-Michel Renders

Classifying Short Descriptions of Past Events . . . . . . . . . . . . . . . . . . . . . . . 729Yasunobu Sumikawa and Adam Jatowt

Stopword Detection for Streaming Content . . . . . . . . . . . . . . . . . . . . . . . . . 737Hossein Fani, Masoud Bashari, Fattane Zarrinkalam,Ebrahim Bagheri, and Feras Al-Obeidat

Generating Adversarial Text Samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . 744Suranjana Samanta and Sameep Mehta

Controlling Information Aggregation for Complex Question Answering . . . . . 750Heeyoung Kwon, Harsh Trivedi, Peter Jansen, Mihai Surdeanu,and Niranjan Balasubramanian

Local Is Good: A Fast Citation Recommendation Approach . . . . . . . . . . . . . 758Haofeng Jia and Erik Saule

On Refining Twitter Lists as Ground Truth Data for Multi-communityUser Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 765

Ting Su, Anjie Fang, Richard McCreadie, Craig Macdonald,and Iadh Ounis

Entity Retrieval via Type Taxonomy Aware Smoothing . . . . . . . . . . . . . . . . 773Xinshi Lin and Wai Lam

A Data Collection for Evaluating the Retrieval of Related Tweetsto News Articles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 780

Axel Suarez, Dyaa Albakour, David Corney, Miguel Martinez,and José Esquivel

Content Based Weighted Consensus Summarization . . . . . . . . . . . . . . . . . . 787Parth Mehta and Prasenjit Majumder

Demonstrations

NOA: A Search Engine for Reusable Scientific Images Beyondthe Life Sciences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 797

Jean Charbonnier, Lucia Sohmen, John Rothman, Birte Rohden,and Christian Wartena

Contents XXIII

A Micromodule Approach for Building Real-Time Systemswith Python-Based Models: Application to Early Risk Detectionof Depression on Social Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 801

Rodrigo Martínez-Castaño, Juan C. Pichel, David E. Losada,and Fabio Crestani

YAKE! Collection-Independent Automatic Keyword Extractor . . . . . . . . . . . 806Ricardo Campos, Vítor Mangaravite, Arian Pasquali,Alípio Mário Jorge, Célia Nunes, and Adam Jatowt

SIREN - Security Information Retrieval and Extraction eNgine. . . . . . . . . . . 811Lalit Mohan Sanagavarapu, Neeraj Mathur, Shriyansh Agrawal,and Y. Raghu Reddy

CITEWERTs: A System Combining Cite-Worthinesswith Citation Recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 815

Michael Färber, Alexander Thiemann, and Adam Jatowt

Elastic ChatNoir: Search Engine for the ClueWeband the Common Crawl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 820

Janek Bevendorff, Benno Stein, Matthias Hagen, and Martin Potthast

Workshops

Bibliometric-Enhanced Information Retrieval: 7th InternationalBIR Workshop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 827

Philipp Mayr, Ingo Frommholz, and Guillaume Cabanac

BroDyn’18: Workshop on Analysis of Broad Dynamic Topicsover Social Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 829

Tamer Elsayed, Walid Magdy, Mucahid Kutlu, Maram Hasanain,and Reem Suwaileh

Second International Workshop on Recent Trends in NewsInformation Retrieval (NewsIR’18) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 831

Miguel Martinez, Dyaa Albakour, David Corney, Julio Gonzalo,Barbara Poblete, and Andreas Vlachos

Workshop on Social Aspects in Personalization and Search (SoAPS 2018). . . 832Ludovico Boratto and Giovanni Stilo

First International Workshop on Narrative Extraction from Texts:Text2Story 2018 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 833

Alípio Mário Jorge, Ricardo Campos, Adam Jatowt, and Sérgio Nunes

XXIV Contents

Tutorials

Neural Networks for Information Retrieval . . . . . . . . . . . . . . . . . . . . . . . . . 837Tom Kenter, Alexey Borisov, Christophe Van Gysel, Mostafa Dehghani,Maarten de Rijke, and Bhaskar Mitra

Tutorial on Semantic Search on Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 838Lynda Tamine and Lorraine Goeuriot

Extreme Multi-label Classification for Information Retrieval . . . . . . . . . . . . . 839Krzysztof Dembczyński and Rohit Babbar

Author Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 841

Contents XXV