This book constitutes the refereed proceedings of the 18th International Conference on Applications of Natural Language to Information Systems, held in Salford, UK, in June 2013. The 21 long papers, 15 short papers and 17 poster papers presented in this volume were carefully reviewed and selected from 80 submissions.

Full Papers.- Extraction of Statements in News for a Media Response Analysis.- Sentiment-Based Ranking of Blog Posts Using Rhetorical Structure Theory.- Automatic Detection of Ambiguous Terminology for Software Requirements.- An OpenCCG-Based Approach to Question Generation from Concepts.- A Hybrid Approach for Arabic Diacritization.- EDU-Based Similarity for Paraphrase Identification.- Exploiting Query Logs and Field-Based Models to Address Term Mismatch in an HIV/AIDS FAQ Retrieval System.- Exploring Domain-Sensitive Features for Extractive Summarization in the Medical Domain.- A Corpus-Based Approach for the Induction of Ontology Lexica.- SQUALL: A Controlled Natural Language as Expressive as SPARQL 1.1.- Evaluating Syntactic Sentence Compression for Text Summarisation.- An Unsupervised Aspect Detection Model for Sentiment Analysis of Reviews.- Cross-Lingual Natural Language Querying over the Web of Data.- Extractive Text Summarization: Can We Use the Same Techniques for Any Text?.- Unsupervised Medical Subject Heading Assignment Using Output Label Co-occurrence Statistics and Semantic Predications.- Bayesian Model Averaging and Model Selection for Polarity Classification.- An Approach for Extracting and Disambiguating Arabic Persons’ Names Using Clustered Dictionaries and Scored Patterns.- ANEAR: Automatic Named Entity Aliasing Resolution.- Improving Candidate Generation for Entity Linking.- Person Name Recognition Using the Hybrid Approach.- A Broadly Applicable and Flexible Conceptual Metagrammar as a Basic Tool for Developing a Multilingual Semantic Web.- Short Papers.- MOSAIC: A Cohesive Method for Orchestrating Discrete Analytics in a Distributed Model.- Ranking Search Intents Underlying a Query.- Linguistic Sentiment Features for Newspaper Opinion Mining.- Text Classification of Technical Papers Based on Text Segmentation.- Product Features Categorization Using Constrained Spectral Clustering.- A New Approach for Improving Cross-Document KnowledgeDiscovery Using Wikipedia.- Using Grammar-Profiles to Intrinsically Expose Plagiarism in Text Documents.- Feature Selection Methods in Persian Sentiment Analysis.- Towards the Refinement of the Arabic Soundex.- An RDF-Based Semantic Index.- Experiments in Producing Playful “Explanations” for Given Names (Anthroponyms) in Hebrew and English.- Collaborative Enrichment of Electronic Dictionaries Standardized-LMF.- Enhancing Machine Learning Results for Semantic Relation Extraction.- GenDesc: A Partial Generalization of Linguistic Features for Text Classification.- Entangled Semantics.- Poster Papers.- Phrase Table Combination Deficiency Analyses in Pivot-Based SMT.- Analysing Customers Sentiments: An Approach to Opinion Mining and Classification of Online Hotel Reviews.- An Improved Discriminative Category Matching in Relation Identification.- Extracting Fine-Grained Entities Based on Coordinate Graph.- NLP-Driven Event Semantic Ontology Modeling for Story.- The Development of an Ontology for Reminiscence.- Chinese Sentence Analysis Based on Linguistic Entity-Relationship Model.- A Dependency Graph Isomorphism for News Sentence Searching.- Unsupervised Gazette Creation Using Information Distance.- A Multi-purpose Online Toolset for NLP Applications.- A Test-Bed for Text-to-Speech-Based Pedestrian Navigation Systems.- Automatic Detection of Arabic Causal Relations.- A Framework for Employee Appraisals Based on Inductive Logic Programming and Data Mining Methods.- A Method for Improving Business Intelligence Interpretation through the Use of Semantic Technology.- Code Switch Point Detection in Arabic.- SurveyCoder: A System for Classification of Survey Responses.- Rhetorical Representation and Vector Representation in Summarizing Arabic Text.

This book constitutes the refereed proceedings of the 18th International Conference on Applications of Natural Language to Information Systems, held in Salford, UK, in June 2013. The 21 long papers, 15 short papers and 17 poster papers presented in this volume were carefully reviewed and selected from 80 submissions. The papers cover the following topics: requirements engineering, question answering systems, named entity recognition, sentiment analysis and mining, forensic computing, semantic web, and information search.