• Title/Summary/Keyword: OpenIE

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A Distance Approach for Open Information Extraction Based on Word Vector

  • Liu, Peiqian;Wang, Xiaojie
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.12 no.6
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    • pp.2470-2491
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    • 2018
  • Web-scale open information extraction (Open IE) plays an important role in NLP tasks like acquiring common-sense knowledge, learning selectional preferences and automatic text understanding. A large number of Open IE approaches have been proposed in the last decade, and the majority of these approaches are based on supervised learning or dependency parsing. In this paper, we present a novel method for web scale open information extraction, which employs cosine distance based on Google word vector as the confidence score of the extraction. The proposed method is a purely unsupervised learning algorithm without requiring any hand-labeled training data or dependency parse features. We also present the mathematically rigorous proof for the new method with Bayes Inference and Artificial Neural Network theory. It turns out that the proposed algorithm is equivalent to Maximum Likelihood Estimation of the joint probability distribution over the elements of the candidate extraction. The proof itself also theoretically suggests a typical usage of word vector for other NLP tasks. Experiments show that the distance-based method leads to further improvements over the newly presented Open IE systems on three benchmark datasets, in terms of effectiveness and efficiency.

Expression of Bombyx mori Nucleopolyhedrovirus ORF4 under the Control of BaculoviruS Ie1 Promoter by a Novel Bac-to-Bac/BmNPV Baculovirus Expression System

  • Su, Wujie;Wu, Yan;Wu, Huiling;Wang, Wenbing
    • International Journal of Industrial Entomology and Biomaterials
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    • v.15 no.2
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    • pp.131-135
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    • 2007
  • Open reading frame 4 of Bombyx mori nucleopolyhedrovirus (BmNPV), designated as Bm4, is a gene whose function is completely unknown. With the recently developed BmNPV bacmid and a modified pFastBac1 whose polyhedrin promoter was replaced with ie1 promoter, a recombinant bacmid expressing Bm4-EGFP fusion protein under the control of ie1 promoter in BmN cells was successfully constructed. The result not only showed that the polyhedrin promoter can be replaced efficiently with other promoters to direct the expression of foreign gene in BmN cells by using Bac-to-Bac/BmNPV baculovirus expression system but also laid the foundation for rescue experiment of Bm4 deletion mutant due to the ability of ie1 promoter to direct gene expression throughout the infection cycle.

IE-SASW Method for Nondestructive Testing of Geotechnical Concrete Structure : II. Experimental Studies (콘크리트 지반구조물의 비파괴검사를 위한 충격반향-표면파 병행기법 : II. 실험적 연구)

  • 김동수;서원석;이광명
    • Journal of the Korean Geotechnical Society
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    • v.18 no.4
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    • pp.271-283
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    • 2002
  • P-wave velocity of concrete is a crucial parameter in determining the thickness of concrete lining, the location of cracks or other defects in Impact-Echo(IE) method. This study introduces an IE-SASW method that may determine the P-wave velocity on a surface of each testing area using the Spectral Analysis of Surface Wave (SASW) method. In numerical studies(Part I), it was verified that P-wave velocities could be obtained from SASW. In this paper(Part II), experimental studies were made in slab type concrete model specimens in which voids and waterproof sheet were included at the known locations. Accordingly, the feasibility of the proposed method was evaluated. The IE-SASW method was also performed in the precast model tunnel on ground and open-cut tunnel in ground. SASW tests were performed to determine the P-wave velocity of the concrete and then IE tests were carried at regularly spaced points along the testing lines to determine the thickness of structures. The nondestructive testing method which combined SASW and IE tests showed the great potential in the field applications.

Identification and Characterization of a Putative Baculoviral Transcriptional Factor IE-1 from Choristoneura fumiferana Granulovirus

  • Rashidan, Kianoush Khajeh;Nassoury, Nasha;Merzouki, Abderrazzak;Guertin, Claude
    • BMB Reports
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    • v.35 no.6
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    • pp.553-561
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    • 2002
  • A gene that encodes a protein homologue to baculoviral IE-1 was identified and sequenced in the genome of the Choristoneura fumiferana granulovirus (ChfuGV). The gene has an 1278 nucleotide (nt) open-reading frame (ORF) that encodes 426 amino acids with an estimated molecular weight of 50.33 kDa. At the nucleotide level, several cis-acting regulatory elements were detected within the promoter region of the ie-1 gene of ChfuGV along with other studied granuloviruses (GVs). Two putative CCAAT elements were detected within the noncoding leader region of this gene; one was located on the opposite strand at -92 and the other at -420 nt from the putative start triplet. Two baculoviral late promoter motifs (TAAG) were also detected within the promoter region of the ie-1 gene of ChfuGV. A single polyadenylation signal, AATAAA, was located 18nt downstream of the putative translational stop codon of ie-1 from ChfuGV. At the protein level, the amino acid sequence data that was derived from the nucleotide sequence in ChfuGV IE-1 was compared to those of the Cydia pomonella granulovirus (CpGV), Xestia c-nigrum granulovirus (XcGV) and Plutella xylostella granulovirus (PxGV). The C-terminal regions of the granuloviral IE-1 sequences appeared to be more conserved when compared to the N-terminal regions. A domain, similar to the basic helix-loop-helix like (bHLH-like) domain in NPVs, was detected at the C-terminal region of IE-1 from ChfuGV (residues 387 to 414). A phylogenetic tree for baculoviral IE-1 was constructed using a maximum parsimony analysis. A phylogenetic estimation demonstrates that ChfuGV IE-1 is most closely related to that of CpGV.

An Investigation of Mild Steel with Nitrogen-containing Inhibitor in Hydrochloric Acid

  • Horng, Y.T.;Tsai, Yi-Liang;Tu, Ching-Fang;Lee, Chien-Ming;Wei, F.I.;Shih, H.C.
    • Corrosion Science and Technology
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    • v.2 no.5
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    • pp.233-237
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    • 2003
  • Pickling inhibitors can be used to form an adsorbed layer on the metal surface to hinder the discharge of H^+$ and dissolution of metal ions. Nitrogen-containing inhibitors were selected as corrosion inhibitors for mild steel (MS) in pickling acid process. In this study, the addition of inhibitor, the pickling temperatures and the pickling times were the parameters to investigate the effects on the inhibition efficiency (IE) for MS by using weight loss measurement. Preliminary results show that the IE increased with the increase in pickling time from 10 minutes to 60 minutes, and the IE also increased with the increase in temperature at room temperature and $40^{\circ}C$. At the higher temperature. the IE values are higher and almost independent with the pickling time. Furthermore, the potentiodynamic polarization, open circuit corrosion potential-time and corrosion current-time studies show that nitorgen-containing inhibitor behaves predominantly as cathodic polarization. The roughness test and SEM investigation are also studied in this paper.

A Study on the PKI based Technology for Internet Banking Service in the Open Software Environment (공개 소프트웨어 환경에서의 인터넷 뱅킹 서비스를 위한 PKI 기반 기술에 대한 연구)

  • Han, Myung-Mook;Lee, Chul-Soo
    • Convergence Security Journal
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    • v.6 no.2
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    • pp.13-20
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    • 2006
  • Since the domestic internet banking environment has established for Microsoft Internet Explorer (IE), the internet banking service is not able to use in the open operating system and web browser such as linux and freeBSD. To solve the :problem, we develop the digital signature system used the seed for the digital payment system in the open software environment. Because the domestic internet banking performs the certificate and digital signature verification through official certificate that the official certificate authority issues, we analyze and develop the verification of validity system for the official certificate. Since the virtual internet banking environment is already established in the web server developing under the self-abilities, the basic internet banking service can be performed installing the certificate in the client which has the mozilla porting the seed. Finally, we can confirm that the certificate and digital signature are performed normally through the experiment.

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The Effect of Guibiondamtang(歸脾溫膽湯) in an Animal Model of Depression using Chronic Mild Stress (우울증(憂鬱症) 모델 흰쥐에 대한 귀비온담탕(歸脾溫膽湯)의 실험적(實驗的) 연구(硏究))

  • Kim Jong-Woo;Whang Wei-Wan;Kim Hyun-Taek;Kwak So-Young;Kim Min-Jung;Cha Yun-Ju
    • Journal of Oriental Neuropsychiatry
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    • v.12 no.2
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    • pp.53-68
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    • 2001
  • This study was performed to investigate the anti-depression effect of Guibiondamtang in rat model of depression. The rats in the experiment were stratified into 3 groups, ie, Guibiondamtang, saline, normal (non-stressed) groups. Chronic exposure to mild unpredictable stress such as white noise, flashing lights and restriction of food and water, causes the behavioral symptoms correspondent to depression. Consumption of 1% sucrose solution fell in rats exposed to CMS for 4 weeks. In the open field test , the exploratory activity ie. locomotion and centering decreased after CMS. We then evaluated the sucrose consumption and activity during 4 weeks of treatment with experimental drugs. The results were as follows: 1) There was no relation between sucrose intake and weight. 2) The Guibiondamtang(歸脾溫膽湯) group reinstated sucrose consumption within 5-6 weeks while having no influence on sucrose intake in normal group. 3) The Guibiondamtang(歸脾溫膽湯) group restored some exploratory activity in the open field test. 4) The Guibiondamtang-group had a-reduced potentiated startle response.

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Comparison of Infective Endocarditis between Children and Adults with Congenital Heart Disease: A 16-Year, Single Tertiary Care Center Review (선천성 심장병을 가진 소아와 성인에서 발생한 감염성 심내막염의 비교: 1개 3차 병원의 16년간 경험)

  • Kwon, Jung Eun;Kim, Yeo Hyang
    • Pediatric Infection and Vaccine
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    • v.23 no.3
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    • pp.209-216
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    • 2016
  • Purpose: This study aimed to evaluate and compare the characteristics of infective endocarditis (IE) between children and adults with congenital heart disease (CHD) at a single tertiary care center. Methods: In this retrospective medical record review, we extracted the demographic characteristics, diagnostic variables, and outcomes of patients diagnosed with IE and CHD between 2000 and 2016. Results: We identified a total of 14 pediatric patients (nine male; median age at diagnosis, 3 years). Of the 14 patients, six had a history of previous open heart surgery, while four had undergone tetralogy of Fallot repair, with transannular patch or Rastelli procedure. Among the 10 children with positive blood cultures, the most common isolated organism was Staphylococcus spp. (8/10, 80%). Eleven adult patients had IE and CHD. Among the adult patients, only four were diagnosed with CHD before IE, and ventricular septal defect was the most common CHD. The most common isolated organism was Streptococcus spp. (6/11, 55%). Compared with adult patients, pediatric patients had a higher incidence of previously diagnosed CHD (P=0.001), with Staphylococcus spp. as the causative organism (P=0.027). The median duration between the onset of symptoms and diagnosis of IE was 9 days in children and 42 days in adults (P=0.012). Conclusions: Significant differences with regard to the diagnosis and progress of IE were observed between children and adults. Age-adjusted and systematic reassessment may be necessary for the diagnosis and management of IE.

Design and Implementation of 3D Geospatial Open Platform Based on HTML5/WebGL Technology (HTML5/WebGL 기반 3D 공간정보 오픈플랫폼 소프트웨어 설계 및 구현)

  • Kim, Min Soo;Jang, In Sung
    • Spatial Information Research
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    • v.23 no.6
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    • pp.57-66
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    • 2015
  • Recently, the utilization of geospatial open platforms has been constantly increased and the interest in 3D geospatial data such as terrain, building and shopping mall has been increased significantly. In particular, rather than simplified 3D geospatial data, interest in high-precision 3D geospatial data which similarly represents the real world objects has increased significantly. In order to satisfy the demand for such the high-precision 3D geospatial data, various kinds of 3D geospatial open platforms has been developed and has provided services on the web. However, most of the 3D geospatial open platforms have been used plug-in module in order to ensure a fast 3D rendering performance on the web, despite the many problems such as difficulty of the installation, no supporting of cross browser/operating system and security issues. In addition, recently, the existing 3D geospatial open platforms based on plug-in module are facing a serious problem, by declaring the NPAPI service interruption in Chrome and Firefox browsers. In this study, we presents the design and implementation of a new 3D geospatial open platform based on HTML5/WebGL technology without the use of plug-ins. Such the new 3D geospatial open platform based on HTML5/WebGL may support cross browsers such as IE, Chrome, Firefox, Safari and cross OS platforms such as Windows, Linux, Mac and mobile OS platforms.

An integration of process planning and scheduling in FMS (FMS 에서 공정계획을 고려한 스케쥴링)

  • Chung, Nam-Kee;Gee, Byung-Sung;Ju, Hyun-Jun
    • IE interfaces
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    • v.7 no.1
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    • pp.59-66
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    • 1994
  • In scheduling open-field type FMS, process planning of decision making between alternate machines is taken into consideration. This idea is validated via implementing two experimental systems; One is a knowledge-based system and the other is to solve a Constraint Satisfaction Problem. The former generates some promising schedules in view of improving machine utilization, makespan and meanflow time, and the latter does in view of meeting due date.

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