结合台风属性数据和多标签分类方法,以BERT-BiLSTM(Bidirectional Encoder Representations from Transformers-Bidirectional Long Short-Term Memory)为分类模型,提出基于微博文本与深度学习的台风灾情识别方法,对2010—2019年登陆广...结合台风属性数据和多标签分类方法,以BERT-BiLSTM(Bidirectional Encoder Representations from Transformers-Bidirectional Long Short-Term Memory)为分类模型,提出基于微博文本与深度学习的台风灾情识别方法,对2010—2019年登陆广东省的强台风/超强台风灾情进行识别,在粗分类获取台风灾情相关微博文本的基础上,进一步细分类为交通影响、社会影响、电力影响、林业影响和内涝积水等5类灾情。结果表明:1)提出的台风灾情识别方法粗分类和细分类精度分别达到0.907和0.814;2)强台风/超强台风的灾情占比受台风强度、路径和受灾地区发展水平等因素影响而存在差异;3)台风登陆前,灾情主要为台风预防措施导致的交通影响和社会影响。台风登陆后,灾情表现出单峰和双峰特征,反映台风灾情的变化趋势和特点。展开更多
In this work,it is found that the compressive stress on the surface of cubic-BN(c-BN)film is all smaller than that inside c-BN film and after a longer period,the depositing matter mainly is of hexagonal-BN phase rathe...In this work,it is found that the compressive stress on the surface of cubic-BN(c-BN)film is all smaller than that inside c-BN film and after a longer period,the depositing matter mainly is of hexagonal-BN phase rather than c-BN phase,those just are the reason why a pure thicker c-BN film cannot,as yet,be obtained.Up to now the lowest IR peak position of 1004.7cm-1 detected from a broken and part delaminated c-BN film may be one close to the stressless c-BN.展开更多
文摘结合台风属性数据和多标签分类方法,以BERT-BiLSTM(Bidirectional Encoder Representations from Transformers-Bidirectional Long Short-Term Memory)为分类模型,提出基于微博文本与深度学习的台风灾情识别方法,对2010—2019年登陆广东省的强台风/超强台风灾情进行识别,在粗分类获取台风灾情相关微博文本的基础上,进一步细分类为交通影响、社会影响、电力影响、林业影响和内涝积水等5类灾情。结果表明:1)提出的台风灾情识别方法粗分类和细分类精度分别达到0.907和0.814;2)强台风/超强台风的灾情占比受台风强度、路径和受灾地区发展水平等因素影响而存在差异;3)台风登陆前,灾情主要为台风预防措施导致的交通影响和社会影响。台风登陆后,灾情表现出单峰和双峰特征,反映台风灾情的变化趋势和特点。
基金Supported by the National Natural Science Foundation of China under Grant No.19774025Jilin Province Science and Technology Foundation.
文摘In this work,it is found that the compressive stress on the surface of cubic-BN(c-BN)film is all smaller than that inside c-BN film and after a longer period,the depositing matter mainly is of hexagonal-BN phase rather than c-BN phase,those just are the reason why a pure thicker c-BN film cannot,as yet,be obtained.Up to now the lowest IR peak position of 1004.7cm-1 detected from a broken and part delaminated c-BN film may be one close to the stressless c-BN.
