1. 2617-2640 of 2664 « 1 2 ... 107 108 109 110 111 »
    1. Computers getting the drift.

      Related Articles Computers getting the drift. Philos Transact A Math Phys Eng Sci. 2007 Dec 15;365(1861):3019-31 Authors: McCarthy D Natural language processing is the study of computer programs that can understand and produce human language. An important goal in the research to produce such technology is identifying the right meaning of words and phrases. In this paper, we give an overview of current research in three areas: (i) inducing word meaning; (ii) distinguishing different meanings of words used in context; and (iii) determining when the meaning of a phrase cannot straightforwardly be obtained from its parts. Manual ...
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      Mentions: Brighton
    2. Medline search engine for finding genetic markers with biological significance.

      Related Articles Medline search engine for finding genetic markers with biological significance. Bioinformatics. 2007 Sep 15;23(18):2477-84 Authors: Xuan W, Wang P, Watson SJ, Meng F MOTIVATION: Genome-wide high density SNP association studies are expected to identify various SNP alleles associated with different complex disorders. Understanding the biological significance of these SNP alleles in the context of existing literature is a major challenge since existing search engines are not designed to search literature for SNPs or other genetic markers. The literature mining of gene and protein functions has received significant attention and effort while similar work on genetic ...
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    3. Fun&Co: identification of key functional differences in transcriptomes.

      Related Articles Fun&Co: identification of key functional differences in transcriptomes. Bioinformatics. 2007 Oct 15;23(20):2725-32 Authors: Gamberoni G, Lamma E, Lodo G, Marchesini J, Mascellani N, Rossi S, Storari S, Tagliavini L, Volinia S MOTIVATION: Microarray and other genome-wide technologies allow a global view of gene expression that can be used in several ways and whose potential has not been yet fully discovered. Functional insight into expression profiles is routinely obtained by using gene ontology terms associated to the cellular genes. In this article, we deal with functional data mining from expression profiles, proposing a novel approach ...
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      Mentions: Italy
    4. Biomedical data mining in clinical routine: expanding the impact of hospital information systems.

      Related Articles Biomedical data mining in clinical routine: expanding the impact of hospital information systems. Medinfo. 2007;12(Pt 1):340-4 Authors: Müller M, Markó K, Daumke P, Paetzold J, Roesner A, Klar R In this paper we want to describe how the promising technology of biomedical data mining can improve the use of hospital information systems: a large set of unstructured, narrative clinical data from a dermatological university hospital like discharge letters or other dermatological reports were processed through a morpho-semantic text retrieval engine ("MorphoSaurus") and integrated with other clinical data using a web-based interface and brought into ...
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    5. Multilingual information retrieval in thoracic radiology: feasibility study.

      Related Articles Multilingual information retrieval in thoracic radiology: feasibility study. Medinfo. 2007;12(Pt 1):387-91 Authors: Castilla AC, Furuie SS, Mendonça EA Most essential information contained in the electronic medical record is stored as text, and this imposes several difficulties on automated data extraction and retrieval. Natural language processing is an approach that can unlock clinical information from free texts. The proposed methodology uses the specialized natural language processor MEDLEE developed for the English language. To use this processor on Portuguese medical texts, chest X-ray reports were machine translated (MT) into English. The result of serial coupling of ...
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    6. Large-scale evaluation of a medical cross-language information retrieval system.

      Related Articles Large-scale evaluation of a medical cross-language information retrieval system. Medinfo. 2007;12(Pt 1):392-6 Authors: Markó K, Daumke P, Schulz S, Klar R, Hahn U We propose an approach to multilingual medical document retrieval in which complex word forms are segmented according to medically relevant morpho-semantic criteria. At its core lies a multilingual dictionary, in which entries are equivalence classes of subwords, i.e. semantically minimal units. Using two different standard test collections for the medical domain, we evaluate our approach for six languages covered by our system. PMID: 17911746 [PubMed - indexed for MEDLINE]
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    7. Evaluation of a simple method for the automatic assignment of MeSH descriptors to health resources in a French online catalogue.

      Related Articles Evaluation of a simple method for the automatic assignment of MeSH descriptors to health resources in a French online catalogue. Medinfo. 2007;12(Pt 1):407-11 Authors: Névéol A, Pereira S, Kerdelhué G, Dahamna B, Joubert M, Darmoni SJ BACKGROUND: The growing number of resources to be indexed in the catalogue of online health resources in French (CISMeF) calls for curating strategies involving automatic indexing tools while maintaining the catalogue's high indexing quality standards. OBJECTIVE: To develop a simple automatic tool that retrieves MeSH descriptors from documents titles. METHODS: In parallel to research on advanced ...
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    8. Using distributional analysis to semantically classify UMLS concepts.

      Related Articles Using distributional analysis to semantically classify UMLS concepts. Medinfo. 2007;12(Pt 1):519-23 Authors: Fan JW, Xu H, Friedman C The UMLS is a widely used and comprehensive knowledge source in the biomedical domain. It specifies biomedical concepts and their semantic categories, and therefore is valuable for Natural Language Processing (NLP) and other knowledge-based systems. However, the UMLS semantic classification is not always accurate, which adversely affects performance of these systems. Therefore, it is desirable to automatically validate, or, when necessary, to semantically reclassify UMLS concepts. We applied a distributional similarity method based on syntactic dependencies and ...
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      Mentions: Xu H Columbia
    9. Experiments with hierarchical concept-based search.

      Related Articles Experiments with hierarchical concept-based search. Medinfo. 2007;12(Pt 1):422-6 Authors: Moskovitch R, Sa'adon R, Behiri E, Martins S, Weiss A, Shahar Y Many digital libraries use hierarchical indexing schema, such as MeSH to enable concept based search in the retrieval phase. However, improving or outperforming the traditional full text search isn't trivial. We present an extensive set of experiments using a hierarchical concept based search retrieval method, applied in addition to several baselines, within the Vaidruya search and retrieval framework. Concept Based Search applied in addition to a low baseline is outperforming significantly, especially ...
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    10. A reappraisal of sentence and token splitting for life sciences documents.

      Related Articles A reappraisal of sentence and token splitting for life sciences documents. Medinfo. 2007;12(Pt 1):524-8 Authors: Tomanek K, Wermter J, Hahn U Natural language processing of real-world documents requires several low-level tasks such as splitting a piece of text into its constituent sentences, and splitting each sentence into its constituent tokens to be performed by some preprocessor (prior to linguistic analysis). While this task is often considered as unsophisticated clerical work, in the life sciences domain it poses enormous problems due to complex naming conventions. In this paper, we first introduce an annotation framework for sentence ...
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      Mentions: Germany
    11. Defining medical words: transposing morphosemantic analysis from French to English.

      Related Articles Defining medical words: transposing morphosemantic analysis from French to English. Medinfo. 2007;12(Pt 1):535-9 Authors: Deléger L, Namer F, Zweigenbaum P Medical language, as many technical languages, is rich with morphologically complex words, many of which take their roots in Greek and Latin-in which case they are called neoclassical compounds. Morphosemantic analysis can help generate definitions of such words. This paper reports work on the adaptation of a morphosemantic analyzer dedicated to French (DériF) to analyze English medical neoclassical compounds. It presents the principles of this transposition and its current performance. The analyzer was ...
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      Mentions: France Paris
    12. Finding malignant findings from radiological reports using medical attributes and syntactic information.

      Related Articles Finding malignant findings from radiological reports using medical attributes and syntactic information. Medinfo. 2007;12(Pt 1):540-4 Authors: Imai T, Aramaki E, Kajino M, Miyo K, Onogi Y, Ohe K Radiology reports are written primarily in natural language. Automated extraction of malignant findings from narrative reports is an important technique for clinical support or alert generation for physicians. This paper proposes a method for automatically extracting malignant findings from narrative radiological reports written in Japanese. First, sentences are parsed and a medical attribute of each phrase is determined. Next, sub-trees related to radiological findings are extracted from ...
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      Mentions: Japan Tokyo
    13. Extracting subject demographic information from abstracts of randomized clinical trial reports.

      Related Articles Extracting subject demographic information from abstracts of randomized clinical trial reports. Medinfo. 2007;12(Pt 1):550-4 Authors: Xu R, Garten Y, Supekar KS, Das AK, Altman RB, Garber AM In order to make more informed healthcare decisions, consumers need information systems that deliver accurate and reliable information about their illnesses and potential treatments. Reports of randomized clinical trials (RCTs) provide reliable medical evidence about the efficacy of treatments. Current methods to access, search for, and retrieve RCTs are keyword-based, time-consuming, and suffer from poor precision. Personalized semantic search and medical evidence summarization aim to solve this problem ...
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    14. A normalized lexical lookup approach to identifying UMLS concepts in free text.

      Related Articles A normalized lexical lookup approach to identifying UMLS concepts in free text. Medinfo. 2007;12(Pt 1):545-9 Authors: Bashyam V, Divita G, Bennett DB, Browne AC, Taira RK The National Library of Medicine has developed a tool to identify medical concepts from the Unified Medical Language System in free text. This tool - MetaMap (and its java version MMTx) has been used extensively for biomedical text mining applications. We have developed a module for MetaMap which has a high performance in terms of processing speed. We evaluated our module independently against MetaMap for the task of identifying UMLS ...
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    15. Coupling ontology driven semantic representation with multilingual natural language generation for tuning international terminologies.

      Related Articles Coupling ontology driven semantic representation with multilingual natural language generation for tuning international terminologies. Medinfo. 2007;12(Pt 1):555-9 Authors: Rassinoux AM, Baud RH, Rodrigues JM, Lovis C, Geissbühler A OBJECTIVES: The importance of clinical communication between providers, consumers and others, as well as the requisite for computer interoperability, strengthens the need for sharing common accepted terminologies. Under the directives of the World Health Organization (WHO), an approach is currently being conducted in Australia to adopt a standardized terminology for medical procedures that is intended to become an international reference. METHOD: In order to achieve such ...
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    16. Statistical selector of the best multiple ICD-coding method.

      Related Articles Statistical selector of the best multiple ICD-coding method. Medinfo. 2007;12(Pt 1):645-9 Authors: Aramaki E, Imai T, Kajino M, Miyo K, Ohe K The International Classification of Diseases 10th version (ICD-10) is one of the standard and most important disease classifications. Since computerized ICD-10 coding systems have drawn a great deal of attention in the medical field, a great number of different coding systems have been proposed. This paper proposes a hybrid architecture of different coding systems. First, given an input disease name, three coding systems output codes with their confidence scores. A C4.5-based system ...
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      Mentions: Japan Tokyo
    17. Creation and evaluation of a terminology server for the interactive coding of discharge summaries.

      Related Articles Creation and evaluation of a terminology server for the interactive coding of discharge summaries. Medinfo. 2007;12(Pt 1):650-4 Authors: Navas H, Osornio AL, Baum A, Gomez A, Luna D, de Quiros FG Free text entry versus structured data has been proposed as models in data entry in health information systems. A new user interface was developed with the objective of improving data capture. It also implemented a modification of the discharge summary data entry user interface that allowed the selection of already coded terms from a local terminology in the context of an inpatient electronic medical ...
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    18. Structuring of free-text diagnostic report.

      Related Articles Structuring of free-text diagnostic report. Medinfo. 2007;12(Pt 1):669-73 Authors: Fujii H, Yamagishi H, Ando Y, Tsukamoto N, Kawaguchi O, Kasamatsu T, Kurosaki K, Osada M, Kaneko H, Kubo A PURPOSE: It is useful to convert free-text diagnostic reports into structured diagnostic reports by semantic analysis for the secondary investigation of their contents. In this study, we propose a system in which description units are automatically extracted to create structured text reports and we evaluated its usefulness. METHODS: We defined the rules to create description units and developed the system that can automatically extract these description ...
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    19. Medication reconciliation using natural language processing and controlled terminologies.

      Related Articles Medication reconciliation using natural language processing and controlled terminologies. Medinfo. 2007;12(Pt 1):679-83 Authors: Cimino JJ, Bright TJ, Li J Medication reconciliation (MR) is a process that seeks to assure that the medications a patient is supposed to take are the same as what they are actually taking. We have developed a method in which medication information (consisting of both coded data and narrative text) is extracted from twelve sources from two clinical information systems and assembled into a chronological sequence of medication history, plans, and orders that correspond to periods before, during and after a ...
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      Mentions: New York Cimino JJ
    20. Machine learning approach for automatic quality criteria detection of health web pages.

      Related Articles Machine learning approach for automatic quality criteria detection of health web pages. Medinfo. 2007;12(Pt 1):705-9 Authors: Gaudinat A, Grabar N, Boyer C The number of medical websites is constantly growing [1]. Owing to the open nature of the Web, the reliability of information available on the Web is uneven. Internet users are overwhelmed by the quantity of information available on the Web. The situation is even more critical in the medical area, as the content proposed by health websites can have a direct impact on the users' well being. One way to control the reliability ...
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    21. Using discourse analysis to improve text categorization in Medline.

      Related Articles Using discourse analysis to improve text categorization in MEDLINE. Medinfo. 2007;12(Pt 1):710-5 Authors: Ruch P, Geissbühler A, Gobeill J, Lisacek F, Tbahriti I, Veuthey AL, Aronson AR PROBLEM: Automatic keyword assignment has been largely studied in medical informatics in the context of the MEDLINE database, both for helping search in MEDLINE and in order to provide an indicative "gist" of the content of an article. Automatic assignment of Medical Subject Headings (MeSH), which is formally an automatic text categorization task, has been proposed using different methods or combination of methods, including machine learning (na ...
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    22. Keeping up with changing source system terms in a local health information infrastructure: running to stand still.

      Related Articles Keeping up with changing source system terms in a local health information infrastructure: running to stand still. Medinfo. 2007;12(Pt 1):775-9 Authors: Vreeman DJ Keeping up with changes in source system terms in a local health information infrastructure requires substantial effort. I developed a program to assist us that returns candidate mappings based on string similarities between newly encountered source test names, existing source test names, and our master dictionary term names. I evaluated this program's performance in identifying correct mappings through a retrospective study of term mappings to our master dictionary from four radiology ...
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    23. Reconciliation of ontology and terminology to cope with linguistics.

      Related Articles Reconciliation of ontology and terminology to cope with linguistics. Medinfo. 2007;12(Pt 1):796-801 Authors: Baud RH, Ceusters W, Ruch P, Rassinoux AM, Lovis C, Geissbühler A OBJECTIVES: To discuss the relationships between ontologies, terminologies and language in the context of Natural Language Processing (NLP) applications in order to show the negative consequences of confusing them. METHODS: The viewpoints of the terminologist and (computational) linguist are developed separately, and then compared, leading to the presentation of reconciliation among these points of view, with consideration of the role of the ontologist. RESULTS: In order to encourage appropriate ...
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      Discourse, Entailment, Machine Translation, NER, Parsing, Segmentation, Semantic, Sentiment, Summarization, WSD