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구문분석과 기계학습 기반 하이브리드 텍스트 논조 자동분석
홍문표 ( Mun Pyo Hong ),신미영 ( Mi Young Shin ),박신혜 ( Shin Hye Park ),이형민 ( Hyung Min Lee ) 한국언어정보학회 2010 언어와 정보 Vol.14 No.2
This paper presents a hybrid approach to the sentiment analysis of online texts. The sentiment of a text refers to the feelings that the author of a text has towards a certain topic. Many existing approaches employ either a pattern-based approach or a machine learning based approach. The former shows relatively high precision in classifying the sentiments, but suffers from the data sparseness problem, i.e. the lack of patterns. The latter approach shows relatively lower precision, but 100% recall. The approach presented in the current work adopts the merits of both approaches. It combines the pattern-based approach with the machine learning based approach, so that the relatively high precision and high recall can be maintained. Our experiment shows that the hybrid approach improves the F-measure score for more than 50% in comparison with the pattern-based approach and for around 1% comparing with the machine learning based approach. The numerical improvement from the machine learning based approach might not seem to be quite encouraging, but the fact that in the current approach not only the sentiment or the polarity information of sentences but also the additional information such as target of sentiments can be classified makes the current approach promising. (Sungkyunkwan University, Kyungpook National University)
톱밥재배에 의한 자흑색불로초(Ganoderma neo-japonicum)의 자실체 발생
조우식 ( Woo Sik JO ),박하나 ( Ha Na Park ),박신혜 ( Shin Hye Park ),정희영 ( Hee Young Jung ),유영복 ( Young Bok Yoo ) 한국균학회 2010 韓國菌學會誌 Vol.38 No.2
Ganoderma neo-japonicum, which is also known as black lingshi mushroom and medicinal mushroom. Present experiments were conducted to determine the possibility of artificial culture with oak sawdust of G. neo-japonicum. The duration of mycelial growth and days of pinhead formation of oak sawdust bag (2.4 kg) were 28~35 days and 25~29 days, respectively. The yield of mushroom fresh fruitbody was 135~157 g.