全国二手汽车车源信息去重数据

该数据是用于对全国二手车网站内和网站间的车源进行去重，是提升二手车数据质量的重要步骤。主要内容为根据经销商的车源信息，找出经销商关系。并根据经销商关系，对同一段时间内有关系的经销商，判断车源是否为重复车源。判断经销商关系，经销商“共享”车源或同一个经销商在不同网站上同时上架相同车源，通过计算经销商之间“共享车源”的比例，超过阈值则认为两个经销商为同一经销商或经销商联盟。判断重复车源，对同一经销商或经销商联盟，当城市，颜色、上牌时间、型号相同情况下，若两车的里程（万公里）不大于0.2，且里程差异百分比不大于5%，则判断两车为重复车源。该数据可以用于国内所有二手车平台的车源去重工作，从而为数据分析、数据建模提供高质量的数据来源。

This dataset is intended for deduplicating vehicle listings within and across national second-hand vehicle websites, serving as a critical step to enhance the quality of second-hand vehicle data. Its core tasks include identifying dealer relationships based on their vehicle listing information, and then judging whether listings from related dealers within the same time period are duplicate ones based on these relationships. For dealer relationship determination: if dealers "share" vehicle listings, or the same dealer publishes identical listings on multiple websites simultaneously, calculate the proportion of "shared listings" between two dealers. If the proportion exceeds a predefined threshold, the two dealers are considered the same entity or a dealer alliance. For duplicate listing detection: for the same dealer or dealer alliance, if two listings have matching cities, colors, registration dates and models, and their mileage (in ten thousand kilometers) differs by no more than 0.2, with the mileage difference percentage not exceeding 5%, the two listings are identified as duplicate ones. This dataset can be applied to vehicle listing deduplication for all domestic second-hand vehicle platforms, providing high-quality data sources for subsequent data analysis and data modeling.

搜集汇总

数据集介绍

特点

该数据集是全国二手汽车车源信息去重数据，主要用于提升二手车数据质量，通过经销商关系和车源信息判断重复车源。数据格式为CSV，月更新，数据量为15000条，适用于二手车估值、残值预测和车企决策等场景。