从移动众包到尼日利亚人群信任的食品价格:统计预处理和采样后处理
Giuseppe Arbia1, Gloria Solano-Hermosilla2, Vincenzo Nardelli3
1Catholic University of Sacred Heart, Rome, Italy.
Scientific data
|July 12, 2023
概括
新的移动应用数据提供了更准确的食品价格监测. 重新权衡众包价格观察提高了粮食安全分析和政策决策的可靠性.
科学领域:
- 农业经济学 农业经济学
- 粮食安全监测 粮食安全监测
- 数据科学为发展提供了数据科学.
背景情况:
- 准确,高分辨率的食品市场价格数据对于食品安全评估和政策至关重要.
- 现有的数据收集方法往往缺乏必要的时间和空间细节.
- 移动技术为更频繁,更细致的价格数据收集提供了潜力.
研究的目的:
- 开发和验证一种使用众包移动应用数据实时,高分辨率的食品价格监测的新方法.
- 与未加权数据相比,评估重新加权的,地理位置的众包价格数据的准确性.
- 提高价格信息对政策和决策的可靠性.
主要方法:
- 利用尼日利亚一个移动应用程序的每日众包食品价格观测.
- 在时空市场背景下实施实时数据验证 (预处理数据).
- 使用基于地理位置的每周重权,以模仿正式的采样设计 (采样后数据).
主要成果:
- 该研究提出了两个新的数据集:预处理和采样后众包食品价格数据.
- 与未加权 (预处理) 数据相比,重新加权 (采样后) 估计显示出更好的准确性.
- 该方法允许从众包价格信息中得出更可靠的统计推断.
结论:
- 基于移动应用程序的众包数据,经过验证和重新加权后,为食品价格监测提供了可靠和准确的方法.
- 这种方法显著提高了市场信息的及时性和空间分辨率.
- 这些发现对政府,食品行业利益相关者和旨在改善粮食安全的研究人员具有实际意义.
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