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A Dependency Graph-Based Keyphrase Extraction Method Using Anti-patterns
Batsuren, Khuyagbaatar,Batbaatar, Erdenebileg,Munkhdalai, Tsendsuren,Li, Meijing,Namsrai, Oyun-Erdene,Ryu, Keun Ho Korea Information Processing Society 2018 Journal of information processing systems Vol.14 No.5
Keyphrase extraction is one of fundamental natural language processing (NLP) tools to improve many text-mining applications such as document summarization and clustering. In this paper, we propose to use two novel techniques on the top of the state-of-the-art keyphrase extraction methods. First is the anti-patterns that aim to recognize non-keyphrase candidates. The state-of-the-art methods often used the rich feature set to identify keyphrases while those rich feature set cover only some of all keyphrases because keyphrases share very few similar patterns and stylistic features while non-keyphrase candidates often share many similar patterns and stylistic features. Second one is to use the dependency graph instead of the word co-occurrence graph that could not connect two words that are syntactically related and placed far from each other in a sentence while the dependency graph can do so. In experiments, we have compared the performances with different settings of the graphs (co-occurrence and dependency), and with the existing method results. Finally, we discovered that the combination method of dependency graph and anti-patterns outperform the state-of-the-art performances.
Budsuren Batsuren,김형환,엄찬용,최진주,이재승 한국광학회 2013 Current Optics and Photonics Vol.17 No.1
We perform an optical vestigial sideband (VSB) filtering using a pair of Fabry-Perot (FP) filters. The transmittance curve of each FP filter is made to have sharp skirts using an offset between input and output coupling fibers. Moreover, the accurate periodicity of FP filters in the optical frequency domain enables the simultaneous VSB filtering of a large number of optical channels. With this VSB filtering technique,we transmit 12.5-GHz spaced 64 × 12.4-Gb/s wavelength-division-multiplexing channels over a single-mode fiber up to 150 km without any dispersion compensations. When the channel spacing is reduced to 10 GHz,we achieve the spectral efficiency of 1 bit/s/Hz in conventional optical intensity modulation systems up to 125 km.
A Dependency Graph-Based Keyphrase Extraction Method Using Anti-patterns
( Khuyagbaatar Batsuren ),( Erdenebileg Batbaatar ),( Tsendsuren Munkhdalai ),( Meijing Li ),( Oyun-erdene Namsrai ),( Keun Ho Ryu ) 한국정보처리학회 2018 Journal of information processing systems Vol.14 No.5
Keyphrase extraction is one of fundamental natural language processing (NLP) tools to improve many textmining applications such as document summarization and clustering. In this paper, we propose to use two novel techniques on the top of the state-of-the-art keyphrase extraction methods. First is the anti-patterns that aim to recognize non-keyphrase candidates. The state-of-the-art methods often used the rich feature set to identify keyphrases while those rich feature set cover only some of all keyphrases because keyphrases share very few similar patterns and stylistic features while non-keyphrase candidates often share many similar patterns and stylistic features. Second one is to use the dependency graph instead of the word co-occurrence graph that could not connect two words that are syntactically related and placed far from each other in a sentence while the dependency graph can do so. In experiments, we have compared the performances with different settings of the graphs (co-occurrence and dependency), and with the existing method results. Finally, we discovered that the combination method of dependency graph and anti-patterns outperform the state-of-the-art performances.
마디풀(Polygonum aviculare L.) 추출물의 대식구 면역증강 효과
전창배,김영훈,Dulamjav Batsuren,Jigjidsuren Tunsag,노주원,판철호,이재권 대한약학회 2013 약학회지 Vol.57 No.6
In this study we demonstrated whether the extract of Polygonum aviculare L. (PAE) can be applied to the immune-stimulating responses in macrophages (Raw 264.7 cells). Cell viability was determined by WST-8 assay, and all four doses of PAE (5, 10, 20, and 40 µg/ml) had no significant cytotoxicity during the entire experimental period. PAE ncreased the production of inducible nitric oxide synthase (iNOS) and nitric oxide (NO), and mRNA expressions and protein levels of pro-inflammatory cytokines(tumor necrotic factor (TNF)-α, interleukin (IL)-1β and IL-6) in the same cells. These immune-stimulating activities of PAE were found to be caused by the stimulation of NFκB signal and phosphorylation of MAP kinases (p38, ERK and JNK).
A Fruit Extract of Paeonia anomala Attenuates Chronic Alcohol-induced Liver Damage in Rats
Sarangerel Oidovsambuu,윤지호,강경수,Batsuren Dulamjav,Jigjidsuren Tunsag,남의정,노주원 한국생약학회 2016 Natural Product Sciences Vol.22 No.4
Prolonged alcohol consumption causes alcoholic liver damage due to the generation of reactive oxygen species, the accumulation of fatty acids, and an increase in inflammatory cytokines in the liver. In this study, the protective effect of a fruit extract of Paeonia anomala (FEPA) against chronic alcohol-induced liver damage was evaluated in Sprague-Dawley rats fed an ethanol or a control Lieber-DeCarli diet for 5 weeks to induce alcoholic liver damage. FEPA (50, 25, and 10 mg/kg body weight/day) as well as the reference control silymarin (25 mg/kg body weight/day) were administered along with the ethanol diet. FEPA protected against increases in alanine aminotransferase and aspartate aminotransferase in serum and attenuated alcohol-induced increases in triglycerides, tumor necrosis factor alpha, thiobarbituric acid-reactive substances, and cytochrome P450 2E1 enzyme activity in the liver compared with the group treated with ethanol only. Anti-oxidative defenses such as the total glutathione level and glutathione peroxidase activity were increased by FEPA treatment. These results suggest that FEPA exerts protective effects against chronic alcohol-induced liver damage by attenuating hepatosteatosis and pro-inflammatory cytokine production and enhancing anti-oxidative defense mechanisms in the liver.
김영훈 ( Young Hoon Kim ),박은규 ( Eun Gyu Park ),( Dulamjav Batsuren ),( Jamsranjav Ganbaatar ),노주원 ( Chu Won Nho ),판철호 ( Cheol Ho Pan ),이재권 ( Jae Kwon Lee ) 한국응용생명화학회(구 한국농화학회) 2014 Journal of Applied Biological Chemistry (J. Appl. Vol.57 No.4
본 연구에서는 아직 까지 연구되지 않은 말굽버섯의 면역증강 효과를 설치류 대식세포에서 검증하였다. 연구결과에 따르면 말굽버섯 메탄올 추출물(FFE)의 처리에 의해 대식세포의 산화질소의 생성이 농도 의존적으로 증가되었다. 산화질소의 생성이 증가된 이유는 산호질소의 생성을 유도하는 효소인 iNOS의 발현이 FFE에 의해 증가되었기 때문이었다. FFE는 면역반응에 중요한 cytokine인 TNF-α, IL-1β, IL-6의 생성도 농도 의존적으로 증가 시켰다. 이 같은 FFE의 면역증강 활성은 면역활성을 중계하는 세포 신호전달분자 중 NF-κB와 MAP Kinases의 활성증가에 의한 것임을 확인 할 수 있었다. 본 연구 결과는 말굽버섯의 임상적 적용에 중요한 자료로 활용될 것이며, 만일 말굽버섯으로부터 분리한 단일성분에서 면역증강활성을 검증 하게 된다면 새로운 식·의약소재로서의 가치를 인정 받을 수 있을 것으로 생각된다. In this study, we demonstrated whether the extract of Fomes fomentarius (FFE; FF extract) could be used to stimulate macrophages (RAW 264.7 cells). All four doses of FFE (5, 10, 20, and 40 μg/mL) had no significant cytotoxicity during the entire experimental period. FFE potently increased the production of nitric oxide (NO). Consistent with these observations, inducible NO synthase levels were increased by FFE in a dose-dependent manner. Moreover, FFE increased the production of tumor necrosis factor-α, interleukin (IL)-1β, and IL-6 in the same cells. These stimulating effects of FFE were found to be caused by the stimulation of phosphorylation of IκBα and MAP kinases (p38,ERK, and JNK). These results suggest that FFE may be used as new agents for wide application in the immune study of mushroom.