지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2022.2
- 수록면
- 481 - 485 (5page)
이용수
초록· 키워드
오류제보하기
It is difficult to evaluate the reduction rate of a species that has a high number of habitats and populations. In addition to the amount of insufficient data present to cover the entire habitat, the inconsistency of study areas and investigation efforts between monitoring programs is a major obstacle to quantifying long-term population decline. To overcome the bias from (1) data insufficiency and (2) inconsistency derived from compiling various investigative sources, including citizen science projects, this study proposes a procedure to estimate the reduction rate using machine learning. After predicting the possibility of occupancy every year through a fitted model in all habitats where target species have been recorded, a trend line is formulated and used for approximating reduction. By the newly described oversampling approach, including indirect occupancy data points, we were able to secure about three times the amount of information on the direct occupancy data points. Compared to the model that learned only the direct occupancy data set, the performance matrix of the model utilizing the new oversampling approach was about 10% higher overall. As a result, the estimated reduction rate of Coccinella novemnotata was 31.2% over the past decade, which corresponds to the VU status in the IUCN Red List. In addition, the machine learning method showed a lower degree of fluctuation in approximations (within 13%) than the relative abundance method (within 42%) and the segmented linear extrapolation method (within 55%), when we integrated 10% of fake information into the data set.
목차
ABSTRACT
1. INTRODUCTION
2. MATERIALS AND METHODS
3. RESULTS AND DISCUSSION
4. CONCLUSION
REFERENCES
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