1. 研究目的与意义（文献综述）

the intra-city freight belongs to the professionallogistics distribution services, and known as "the last kilometer oflogistics". companied with shunfeng, deppon, zhongtong, yuantong and otherprofessional logistics companies, the business focus of intra-city freight are different .intra-city freight only provides short-distance logistics distribution within acity from point to point, which is usually characterized by small batch,multi-frequency and timeliness. the intra-city freight greatly meets users'growing demand for direct distribution, residential distribution and"door-to-door" distribution, and it effectively fills the gap between b2bfreight logistics and e-commerce logistics, providing customers with more diversifiedservice options. the traditional intra-city freight industry has somedisadvantages, such as low information conversion rate, low pricingtransparency, and lacks of protection for the rights and interests ofshippers and drivers, etc. however, the rapid development of sharing economyhas promoted the transformation and upgrading of the traditional intra-cityfreight industry. under the sharing economy, a new economic type and resourceallocation method has been created, massive decentralized idle resources areintegrated and shared based on modern technologies. at the same time, the intra-city freight platform has been developed, whichmatches the information of goods and vehicles, helps enterprises to simplifyunnecessary links, saves a lot of labor costs and provides personalizedservices for shippers.

the intra-city freight platform saves the processof shipper looking for vehicle, drivers waiting for the goods and thenegotiation between shippers and drivers. the platform can significantlyimprove the efficiency of transactions, but also brought new problems: thefreight platform is responsible for the integration of vehiclesinformation and the shippers' demand information. then the drivers will pickupgoods from the shippers and deliver them to the appointed places after thesuccessful match of their information. during thkis process, the platform can’tget directly contact with the goods but charge according the estimate volumefrom the photos uploaded by shippers. affectedby the personal shooting skills, there are always exsiting some errors in theestimation of the volume of goods, which leads to the mismatch between shippersand drivers and unreasonable charges .the purpose of this paper is to correctthe deviation of the estimation volume by the freight platform, so as to matchthe vehicle according to the accurate volume, reasonably charge the shipper forshipping, and finally achieve a win-win situation among the three parties underthe sharing economy.

2. 研究的基本内容与方案

共享经济以及同城o2o货运平台的发展推动了社会闲散运力资源的整合与利用，而合理的运费定价是货运平台在共享经济下扩大市场份额的关键。在同城零担快运业务中，涉及货主、平台、司机三方角色，当货主托运的货物为不满整车的小件货时，则作为零星货物交运，承运人（司机）将不同货主的货物先集货再配送。由于零担运输车辆一次访问多个取货点与送货点，需要更多的装载和卸载操作，因此零担运输通常较慢且每单元成本更高，而同城货运平台则可以通过提前收集车辆与货物信息，大大提高了司机与货主间供需匹配的效率，降低车辆空载率的同时提高客户服务水平。然而当货物为轻抛货物时，平台首先通过客户拍摄的照片对货物体积进行预估、分段收费。这可能与货物实际体积存在一定的偏差，导致平台在进行供需匹配时运输成本的改变，产生平台潜在收费不合理现象。论文以同城货运平台中的零担快运业务为研究对象，考虑同城零担业务中可变收费体积对运输成本的影响，从而优化平台收费定价，实现共享经济下三方的互利共赢。

the main contents and objectives of the paper areas follows:

3. 研究计划与安排

1) 2019年2月18日-2019年2月24日（第1周）：文献查阅与资料阅读（强烈建议从假期开始），并翻译相关的英文资料（不少于2万印刷符号）；

2) 2019年2月25日-2019年3月1日（第2周）：明确论文写作内容，绘制技术路线图；

3) 2019年3月4日-2019年3月8日（第3周）：撰写、修改并提交开题报告，完成开题；

4. 参考文献（12篇以上）

[1] mengke yang,movahedipour mahmood, xiaoguang zhou等. design and implementation of cloudplatform for intelligent logistics in the trend of intellectualization[j]. 中国通信, 2017, 第14卷(10):180-191

[2] 宋娟娟, 刘伟. 双边市场理论视角下物流平台运营机制分析--以公路货运平台为例[j]. 中国流通经济, 2015, 第29卷(10):28-33.

[3] 潘雯雯, 郭海湘, 周光勇, 等. 基于两阶段算法的需求可拆分多车型车辆路径问题[j]. 中国管理科学, 2016, 24(s1): 55-61.