scholarly journals Effectiveness of Lexico-syntactic Pattern Matching for Ontology Enrichment with Clinical Documents

2011 ◽  
Vol 50 (05) ◽  
pp. 397-407 ◽  
Author(s):  
W. W. Chapman ◽  
G. Savova ◽  
C. G. Chute ◽  
N. Sioutos ◽  
R. S. Crowley ◽  
...  
Keyword(s):  
Pattern Matching ◽  
National Cancer Institute ◽  
Semantic Knowledge ◽  
Acceptance Rate ◽  
Evaluation Metrics ◽  
Second Step ◽  
Matching Method ◽  
Domain Experts ◽  
Syntactic Pattern ◽  
The Relationship

SummaryObjective: To evaluate the effectiveness of a lexico-syntactic pattern (LSP) matching method for ontology enrichment using clinical documents.Methods: Two domains were separately studied using the same methodology. We used radiology documents to enrich RadLex and pathology documents to enrich National Cancer Institute Thesaurus (NCIT). Several known LSPs were used for semantic knowledge extraction. We first retrieved all sentences that contained LSPs across two large clinical repositories, and examined the frequency of the LSPs. From this set, we randomly sampled LSP instances which were examined by human judges. We used a twostep method to determine the utility of these patterns for enrichment. In the first step, domain experts annotated medically meaningful terms (MMTs) from each sentence within the LSP. In the second step, RadLex and NCIT curators evaluated how many of these MMTs could be added to the resource. To quantify the utility of this LSP method, we defined two evaluation metrics: suggestion rate (SR) and acceptance rate (AR). We used these measures to estimate the yield of concepts and relationships, for each of the two domains.Results: For NCIT, the concept SR was 24%, and the relationship SR was 65%. The concept AR was 21%, and the relationship AR was 14%. For RadLex, the concept SR was 37%, and the relationship SR was 55%. The concept AR was 11%, and the relationship AR was 44%.Conclusion: The LSP matching method is an effective method for concept and concept relationship discovery in biomedical domains.

scholarly journals A lexico-syntactic Pattern Matching Method to Extract Idm- Triz Knowledge from On-line Patent Databases

2015 ◽  
Vol 131 ◽  
pp. 418-425 ◽  
Author(s):  
Achille Souili ◽  
Denis Cavallucci ◽  
François Rousselot
Keyword(s):  
Pattern Matching ◽  
Matching Method ◽  
Syntactic Pattern ◽  
On Line

scholarly journals A novel optimal multi-pattern matching method with wildcards for DNA sequence

2021 ◽  
Vol 29 ◽  
pp. 115-124
Author(s):  
Xinlu Wang ◽  
Ahmed A.F. Saif ◽  
Dayou Liu ◽  
Yungang Zhu ◽  
Jon Atli Benediktsson
Keyword(s):  
Dna Sequence ◽  
Pattern Matching ◽  
Health Informatics ◽  
State Of The Art ◽  
Machine Language ◽  
Data Sets ◽  
Fundamental Issue ◽  
Matching Method ◽  
Dna Sequence Alignment ◽  
The Given

BACKGROUND: DNA sequence alignment is one of the most fundamental and important operation to identify which gene family may contain this sequence, pattern matching for DNA sequence has been a fundamental issue in biomedical engineering, biotechnology and health informatics. OBJECTIVE: To solve this problem, this study proposes an optimal multi pattern matching with wildcards for DNA sequence. METHODS: This proposed method packs the patterns and a sliding window of texts, and the window slides along the given packed text, matching against stored packed patterns. RESULTS: Three data sets are used to test the performance of the proposed algorithm, and the algorithm was seen to be more efficient than the competitors because its operation is close to machine language. CONCLUSIONS: Theoretical analysis and experimental results both demonstrate that the proposed method outperforms the state-of-the-art methods and is especially effective for the DNA sequence.

Komponisten, Interpreten und Editoren debattieren über Notation

2019 ◽  
Vol 33 (1) ◽  
pp. 64-81
Author(s):  
Dörte Schmidt
Keyword(s):  
New York ◽  
International Association ◽  
Contemporary Music ◽  
Second Step ◽  
John Cage ◽  
Musical Structure ◽  
New Developments ◽  
The Relationship

Abstract The article discusses how new developments in the notation of contemporary music were negotiated within the framework of the Darmstadt Summer Courses and which interests and actors played a role in this. The first part examines the publications and publication projects that emerged in the context of the Notation conference in 1964. The focus is on the interests of institutions such as the International Music Council and the International Association of Music Libraries, in whose name the New York publisher Kurt Stone attempted to persuade the International Music Institute Darmstadt to cooperate and, following on from the debates there, to systematically record various forms of notation together. In a second step, the content of the debates at the conference is examined, with a particular focus on the different and sometimes conflicting perspectives of interpreters and composers. Numerous connections to fundamental aesthetic discussions of the time can be worked out, in particular to the relationship between the composer’s intention and interpretation, which was renegotiated in a form of notation that was individualized to the extreme. Finally, with a view to later discussions, this topic is pointed to the question of the relationship between morphology and musical structure, exemplified by positions of Wolfgang Rihm (1982), Klaus Huber (1988) and John Cage (1990).

Understanding the Sexual Victimization of Children by Juveniles: Identifying Criminal Event Patterns

2021 ◽  
Author(s):  
Julien Chopin ◽  
Eric Beauregard
Keyword(s):  
Latent Class Analysis ◽  
External Validity ◽  
Latent Class ◽  
Sexual Victimization ◽  
Situational Crime Prevention ◽  
Second Step ◽  
Crime Commission ◽  
Victim Assistance ◽  
The Relationship ◽  
Practical Implications

The purpose of this study is to explore the crime-commission process involved in the sexual victimization of children perpetrated by juveniles. Specifically, this study aims to explore the interconnectedness of pre-crime, crime, and post-crime phases with victimological characteristics using a criminal event perspective. The sample used in this study consists of 185 cases of child sexual abuses perpetrated by juveniles. The first step of this study uses latent class analysis to explore the relationship between each step of the crime-commission process. As a second step, additional variables were used to test the external validity of our model. Results suggest that there are three different criminal event patterns: familiar sexually non-intrusive, familiar sexually intrusive, and stranger sexually non-intrusive. Moreover, we found that specific victimological characteristics were associated with each of the patterns. Practical implications in terms of situational crime prevention and victim assistance are discussed.

Government failures and non-performing loans in European countries: a spatial approach

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ferdinando Ofria ◽  
Massimo Mucciardi
Keyword(s):  
Public Debt ◽  
Geographically Weighted Regression ◽  
European Countries ◽  
Weighted Regression ◽  
Second Step ◽  
Ols Regression ◽  
Content Type ◽  
The Impact ◽  
The Relationship ◽  
The Eu

PurposeThe purpose is to analyze the spatially varying impacts of corruption and public debt as % of GDP (proxies of government failures) on non-performing loans (NPLs) in European countries; comparing two periods: one prior to the crisis of 2007 and another one after that. The authors first modeled the NPLs with an ordinary lest square (OLS) regression and found clear evidence of spatial instability in the distribution of the residuals. As a second step, the authors utilized the geographically weighted regression (GWR) to explore regional variations in the relationship between NPLs and the proxies of “Government failures”.Design/methodology/approachThe authors first modeled the NPL with an OLS regression and found clear evidence of spatial instability in the distribution of the residuals. As a second step, the author utilized the Geographically Weighted Regression (GWR) (Fotheringham et al., 2002) to explore regional variations in the relationship between NPLs and proxies of “Government failures” (corruption and public debt as % of GDP).FindingsThe results confirm that corruption and public debt as % of GDP, after the crisis of 2007, have affected significantly on NPLs of the EU countries and the following countries neighboring the EU: Switzerland, Iceland, Norway, Montenegro, and Turkey.Originality/valueIn a spatial prospective, unprecedented in the literature, this research focused on the impact of corruption and public debt as % of GDP on NPLs in European countries. The positive correlation, as expected, between public debt and NPLs highlights that fiscal problems in Eurozone countries have led to an important rise of problem loans. The impact of institutional corruption on NPLs reports that the higher the corruption, the higher is the level of NPLs.

scholarly journals Research on the Relative Positions-Constrained Pattern Matching Method for Underwater Gravity-Aided Inertial Navigation

2015 ◽  
Vol 68 (5) ◽  
pp. 937-950 ◽  
Author(s):  
Lin Wu ◽  
Hubiao Wang ◽  
Hua Chai ◽  
Houtse Hsu ◽  
Yong Wang
Keyword(s):  
South China Sea ◽  
Pattern Matching ◽  
Inertial Navigation System ◽  
Inertial Navigation ◽  
Success Rates ◽  
Simulation Test ◽  
Matching Method ◽  
Contour Matching ◽  
Simulation Results ◽  
Straight Lines

A Relative Positions-Constrained pattern Matching (RPCM) method for underwater gravity-aided inertial navigation is presented in this paper. In this method the gravity patterns are constructed based on the relative positions of points in a trajectory, which are calculated by Inertial Navigation System (INS) indications. In these patterns the accumulated errors of INS indicated positions are cancelled and removed. Thus the new constructed gravity patterns are more accurate and reliable while the process of matching can be constrained, and the probability of mismatching also can be reduced. Two gravity anomaly maps in the South China Sea were chosen to construct a simulation test. Simulation results show that with this RPCM method, the shape of the trajectory in gravity-aided navigation is not as restricted as that in traditional Terrain Contour Matching (TERCOM) algorithms. Moreover, the performance included matching success rates and position accuracies are highly improved in the RPCM method, especially for the trajectories that are not in straight lines. Thus the proposed method is effective and suitable for practical navigation.

SUBSTANTIATION OF PARAMETERS OF THE 3D CDP FIELD OBSERVATION SYSTEM

2021 ◽  
pp. 40-47
Author(s):  
A. P. Sysoev ◽  
Keyword(s):  
Comparative Analysis ◽  
Distribution Density ◽  
Second Step ◽  
Image Point ◽  
Observation System ◽  
Kirchhoff Migration ◽  
Observation Systems ◽  
The Common ◽  
Gaussian Beam Migration ◽  
The Relationship

The substantiation of parameters of the 3D observation system is considered from the perspective of the Kirchhoff migration. At the first step of this transformation, on the basis of diffraction transformation on a gather of CSP, the problem of wavelet extraction reflected from specified points of the medium (image points) is solved. The characteristic of the directivity of this transformation is determined by parameters of the arrangement of devices. At the second step, summation is performed by gathers of the common image point (СIP). The distribution density of the observation system sources determines the stacking fold by CIP. In the process of selecting survey parameters, the comparative analysis of equivalent observation systems with the same data properties for the migration task, but with different parameters of the observation system, is of great important. The relationship between the step of common midpoints of the observation system and the step of traces of resulting images of the medium is discussed. The Gaussian beam migration algorithm is considered as a method for solving the problem of constructing an image of the medium that correctly takes into account the irregularity of the initial data.

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