Results 21 to 30 of about 18,329 (166)
Zhejiang Daxue xuebao. Lixue ban, 2023 基于POI大数据，采用最邻近距离分析、核密度估计、辛普森多样性指数以及地理探测器模型等空间数据计量方法，量化分析了浙江省乡村旅游产业空间布局特征、混合活力以及影响因素。结果表明：（1）浙江省乡村旅游产业整体呈现“两大核心区、多个增长极”的空间集聚特征；（2）浙江省乡村旅游产业发展水平区域差异仍然显著，北部乡村旅游产业活力明显高于南部；（3）浙江省乡村旅游产业布局受经济条件影响显著，受交通条件影响最弱；双因素交互作用的影响均高于单因素作用，并产生双因子增强与非线性增强两种效应 ...
葛丹东(GE Dandong) +2 more
doaj +1 more source
, 2023 The challenges faced by text classification with large tag systems in natural language processing tasks include multiple tag systems, uneven data distribution, and high noise.
ChenZi, Wang +6 more
core
Document-Level Event Detection Method Based on Information Aggregation and Data Augmentation [PDF]
Event detection is a key task in the field of natural language processing, aiming to identify event trigger words and correctly classify their event types.
TAN Lijun, HU Yanli, CAO Jianwei, TAN Zhen
core +1 more source
A Few‑Shot Learning Algorithm for Defect Image Generation and Data Augmentation Based on DID‑AugGAN [PDF]
To address the issues of low quality， lack of realism， and poor diversity in defect images generated by generative adversarial network （GAN） under small-sample conditions， this paper proposes a defect image generation algorithm， named defect image data ...
DENG Yafeng +3 more
core +4 more sources
Image Data Augmentation Method for Random Channel Perturbation [PDF]
The simulation of object occlusion strategies in data augmentation sets all the pixels in the randomly cropped region of the input image to zero, which erases the effective texture features and leads to poor network generalization.
JIANG Wentao, LIU Yuwei, ZHANG Shengchong
core +1 more source
Design and Implementation of Insurance Operating Expenses Monitoring System [PDF]
, 2015 费用监控系统主要是实现销售费用差异化配置及调整功能，实现按照基本规则、特殊规则、特批保单规则、阶段性奖励推动系统化跟单配置；在统一的费用管理平台中及时为用户提供费用监控数据，为公司各层级管理人员提供清晰、高效、便捷的费用监控数据。目的是加强财险公司对费用成本管理、合规经营意识，提高资源差异化配置能力，为公司持续健康发展、经营决策提供有力支持。 费用监控系统采用INFORMIX数据库+ETL+J2EE体系结构来搭建系统框架；展示层采用Html+JavaScript+Jquery ...
黄涛
core
Effects of parachute science on local research capacity 降落伞科学对当地研究能力的影响
Conservation Biology, EarlyView.Abstract Strengthening research capacity is essential to address the global biodiversity crisis. Yet, parachute science often undermines this goal, and its prevalence, costs, and benefits are unclear. We analyzed 13,502 publications on primate research that we extracted from Scopus (1960–2022) to evaluate the effects of parachute science on local ...
Li Yang +11 more
wiley +1 more source
Gaoya dianqi, 2022 作为一种新兴的环保绝缘气体，七氟异丁腈（C4F7N）因其优异的绝缘性能和远低于六氟化硫（SF6）的全球增温潜势引起了研究人员的广泛关注。在C4F7N电子碰撞截面等基础数据不完整的情况下，文中基于气体流注放电判据，提出了C4F7N-CO2混合气体有效电离反应系数的计算方法，分析了C4F7N-CO2混合气体的临界击穿场强及绝缘性能的变化规律。研究结果表明，当C4F7N气体的热化系数为1.2或1.4时，C4F7N-CO2混合气体的临界击穿场强计算值与实验数据吻合较好。此外，C4F7N ...
邓云坤 +5 more
doaj
Fault diagnosis method of timing signal based on Nadam-TimeGAN and XGBoost [PDF]
In order to improve the diagnostic performance and model generalization ability of the fault diagnosis model in data imbalance scenarios, a time series signal fault diagnosis method based on Nadam-TimeGAN and XGBoost was proposed.
FEI Rong +5 more
core +1 more source
A link between increased temperature and avian body condition in a logged tropical forest
Conservation Biology, EarlyView.Abstract The combined effects of anthropogenic disturbances, such as logging and climate change, remain poorly understood; yet, they are the main threats to tropical biodiversity. Most tropical African countries lack long‐term climate data, so climate impacts on biodiversity cannot be assessed.
Moreen Uwimbabazi +7 more
wiley +1 more source