Invited Paper -- An Alternative Approach to Tagging -- Natural Language for Database Query Processing -- An Efficient Denotational Semantics for Natural Language Database Queries -- Email Management -- An Approach to Hierarchical Email Categorization Based on ME -- Developing Methods and Heuristics with Low Time Complexities for Filtering Spam Messages -- Semantic Annotation -- Exploit Semantic Information for Category Annotation Recommendation in Wikipedia -- A Lightweight Approach to Semantic Annotation of Research Papers -- Text Clustering -- A New Text Clustering Method Using Hidden Markov Model -- Identifying Event Sequences Using Hidden Markov Model -- The Dictionary-Based Quantified Conceptual Relations for Hard and Soft Chinese Text Clustering -- On-Line Single-Pass Clustering Based on Diffusion Maps -- Selecting Labels for News Document Clusters -- Ontology Engineering -- Generating Ontologies Via Language Components and Ontology Reuse -- Experiences Using the ResearchCyc Upper Level Ontology -- From OWL Class and Property Labels to Human Understandable Natural Language -- Ontological Text Mining of Software Documents -- Natural Language for Information System Design -- Treatment of Passive Voice and Conjunctions in Use Case Documents -- Natural Language Processing and the Conceptual Model Self-organizing Map -- Automatic Issue Extraction from a Focused Dialogue -- Information Retrieval Systems -- Character N-Grams Translation in Cross-Language Information Retrieval -- Cross-Lingual Information Retrieval by Feature Vectors -- Incomplete and Fuzzy Conceptual Graphs to Automatically Index Medical Reports -- Combining Vector Space Model and Multi Word Term Extraction for Semantic Query Expansion -- The Bootstrapping Based Recognition of Conceptual Relationship for Text Retrieval -- A Framework of NLP Based Information Tracking and Related Knowledge Organizing with Topic Maps -- Natural Language Processing Techniques -- DLSITE-1: Lexical Analysis for Solving Textual Entailment Recognition -- Text Segmentation Based on Document Understanding for Information Retrieval -- Named Entity Recognition for Arabic Using Syntactic Grammars -- Four Methods for Supervised Word Sense Disambiguation -- Enhancing Relation Extraction by Eliciting Selectional Constraint Features from Wikipedia -- A Computer Science Electronic Dictionary for NOOJ -- Applying Wikipedia’s Multilingual Knowledge to Cross–Lingual Question Answering -- Zero Anaphora Resolution in Chinese and Its Application in Chinese-English Machine Translation -- Short Papers -- Rule-Based Partial MT Using Enhanced Finite-State Grammars in NooJ -- Biomedical Named Entity Recognition: A Poor Knowledge HMM-Based Approach -- Unsupervised Language Independent Genetic Algorithm Approach to Trivial Dialogue Phrase Generation and Evaluation -- Large-Scale Knowledge Acquisition from Botanical Texts -- Lexical-Based Alignment for Reconstruction of Structure in Parallel Texts -- Electronic Dictionaries and Transducers for Automatic Processing of the Albanian Language -- Two Methods of Evaluation of Semantic Similarity of Nouns Based on Their Modifier Sets -- A Service Oriented Architecture for Adaptable Terminology Acquisition -- Domain Relevance on Term Weighting -- Flexible and Customizable NL Representation of Requirements for ETL processes.

The 12th International Conference on Applications of Natural Language to Infor- tion Systems (NLDB 2007) took place during June 27–29 in Paris (France). Since the first edition in 1995, the NLDB conference has been aiming at bringing together researchers, people working in industry and potential users interested in various - plications of natural language in the database and information system areas. Natural language and databases are core components in the development of inf- mation systems. NLP techniques may substantially enhance most phases of the information system lifecycle, starting with requirement analysis, specification and validation, and going up to conflict resolution, result processing and presentation. Furthermore, natural language-based query languages and user interfaces facilitate the access to information for all and allow for new paradigms in the usage of comput- ized services. Hot topics such as information retrieval and Semantic Web-based applications imply a complete fusion of databases and NLP techniques. Among an increasing number of submitted papers (110), the Program Committee selected 31 papers as full papers, thus coming up with an acceptance rate of 28%. These proceedings also include 12 short papers that were presented at the conference and two invited talks, one given by Andrew Basden and Heinz Klein and the other given by Max Silberztein.