WO2020118891A1 - 一种航空货邮配送方法 - Google Patents
一种航空货邮配送方法 Download PDFInfo
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- WO2020118891A1 WO2020118891A1 PCT/CN2019/075370 CN2019075370W WO2020118891A1 WO 2020118891 A1 WO2020118891 A1 WO 2020118891A1 CN 2019075370 W CN2019075370 W CN 2019075370W WO 2020118891 A1 WO2020118891 A1 WO 2020118891A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
- G06Q10/083—Shipping
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/10—Office automation; Time management
- G06Q10/109—Time management, e.g. calendars, reminders, meetings or time accounting
- G06Q10/1093—Calendar-based scheduling for persons or groups
Definitions
- the invention belongs to the field of aviation technology, and particularly relates to an air cargo and mail delivery method.
- the value of flight operations is uncertain. Under normal circumstances, the capacity of the flight (the total weight that can be carried in the belly cabin of the passenger aircraft) is fixed, and the weight of the items checked by the passengers of the aircraft is related to the flight operation and the capacity of the flight. The weight of passengers' checked items is inversely related to the availability of flights. Airlines generally estimate the availability of flights based on historical experience.
- the airline will sign an order contract with each freight forwarding company every year.
- the agent contracts part of the mail volume at a certain price, and the remaining cargo volume is placed on the market for free sales.
- the ratio of agent sales to free sales of cargo and mail orders is generally judged by airlines through experience, and has certain limitations on the routes of complicated sectors.
- the technical problem solved by the present invention is to propose a method of air cargo and mail delivery in view of the deficiencies of the existing technology, with the urgency of the delivery of cargo and mail orders as the secondary goal, and the balance of flight utilization rates on the same sector as the main Objective, establish the objective function, and solve the air cargo and mail delivery plan, and achieve the effect of multi-objective optimization.
- An air cargo and mail delivery method includes the following steps:
- Step 1 Obtain flight data and cargo and mail order data
- Step 2 Sort the flights on the same flight segment on the same day in the order of departure time
- Step 3 For the delivery of all cargo and mail orders on the same flight segment on the same day, establish a secondary target planning model that targets the urgency of the shipment:
- V yK 0 or 1
- Step 4 Iteratively adjust the value of ⁇ in the constraints of the secondary target programming model, and record the ⁇ value obtained after the mth iteration as ⁇ (m) . Perform the following operations after each iteration:
- Variance reflects the degree of dispersion in the utilization rate of each flight in this segment, and is used to measure the balance of flight utilization;
- Step 5 After several iterations of adjustment, solve the main target planning model that aims at the balance of flight utilization:
- ⁇ (m) corresponding to f is the optimal value of ⁇ , the corresponding That is the best cargo and mail delivery plan.
- the flight data and the cargo and mail order data are obtained, and the invalid and null data in the two types of data are removed to extract valid information;
- the valid information in the flight data includes the flight number, flight date, Take-off location, arrival location and take-off time;
- the valid information in the cargo and mail order data includes the main waybill number corresponding to each cargo and mail order, the weight of the goods, the urgency of delivery, and the flight information to which the cargo and mail order was originally assigned, including Flight number, flight date, place of departure, place of arrival and operation are available.
- the total available operation of all flights of the same flight segment on the same day and the total weight of goods corresponding to all cargo and mail orders of the same flight segment on the same day are calculated to calculate the flight of the flight segment Average utilization.
- the present invention provides an air cargo and mail order allocation method, which is different from the traditional operations research method.
- This method is based on multiple programming, which combines linear programming and dynamic programming to solve the optimization of the multi-objective multi-stage decision-making process.
- It uses dynamic programming as the basic framework.
- the objective function f of dynamic programming is the main goal of multiple programming.
- Linear programming is used to determine the variables of dynamic programming. The range of values is limited, that is, the optimal "definition domain" of the decision variable X K is determined on the basis of achieving the secondary goal max Z of multiple planning; the multi-stage decision problem is transformed into a series of interrelated single-stage problems, and then one by one Be resolved to achieve the ultimate goal.
- This method adopts multiple planning methods to achieve the distribution of air cargo and mail orders.
- the delivery priority of cargo and mail orders is set as a secondary target, and the utilization ratio of each flight segment is set as the main target, and it is reflected by the minimum variance.
- This method works well and satisfies the requirements of the balance of all flights in the same flight segment to a great extent.
- This method meets the secondary goal while satisfying the optimal decision set.
- the optimal decision set based on the decision variables determined in the linear programming stage is determined, and the optimal goal to be achieved is determined in the dynamic planning stage.
- the application of this method to air cargo and mail orders is conducive to promoting the development of air cargo and mail transportation business, reducing the flight empty load rate, meeting the people's demand for air cargo speed, optimizing the flight utilization rate of the same flight segment, and reducing the cost of individual flights.
- the load consumption based on this method, can provide a reasonable distribution plan for the distribution of future cargo and mail orders, which is of great significance to the development of the overall logistics industry.
- Figure 1 is a schematic diagram of the process of the present invention
- Figure 3 is a comparison diagram of the probability distribution of flight utilization variance before and after the use of this method for January-March 2018 cargo and mail orders.
- Figures 3(a) and 3(b) are the cargo and mail order utilization books for January 2018, respectively.
- Comparison graphs of the probability distribution of the variance of flight utilization before and after method optimization are the comparison graphs of the probability distribution of variance of flight utilization before and after the optimization of the February 2018 cargo and mail order using this method;
- Figure 3 (e) and Figure 3(f) are comparison graphs of the probability distribution of variance of flight utilization before and after the optimization of the cargo and mail orders in March 2018 using this method.
- the present invention proposes an air cargo and mail order delivery method.
- the following describes the present invention in further detail with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.
- the specific implementation of the present invention is shown in FIG. 1 and includes the following steps .
- Step 1 Obtain the flight data and cargo and mail order data of Civil Aviation from January to March 2018, and remove the invalid and null data from the two types of data to extract valid information.
- the valid information in the flight data includes the flight number, flight date, departure location, arrival location, departure time, and arrival time;
- the valid information in the cargo and mail order data includes the main waybill number, product code, and product corresponding to each cargo and mail order
- flight segment The interval formed by one take-off point and one arrival point is called a flight segment.
- Step 2 Calculate the average flight utilization rate of each flight segment
- P is the sum of the weight of the goods corresponding to all cargo and mail orders of that segment on that day
- T is the sum of the available operations of all flights of that segment on that day.
- G K is available for the Kth flight;
- each flight of each flight segment is regarded as one stage, and there are N flights in a certain flight segment.
- state variable S K represents the total cargo volume initially owned by the Kth flight
- the Kth flight is one of the N flights, which is expressed as:
- Step three according to the order's urgency, determine the priority shipping factor B of the same day's cargo and mail order and the 0-1 variable V to determine whether the order is loaded.
- the yth cargo and mail order is one of the d orders.
- the weight of the y-th order is W y kg, W y ⁇ 0, and the priority shipping factor of the y-th order is defined as B y to indicate the priority of the delivery of the cargo and mail order.
- V yK indicates whether the yth cargo and mail order is loaded into the Kth flight
- V yK 0 indicates that the yth cargo and mail order is not loaded Enter the Kth flight.
- Step 4 Establish a secondary goal planning model that targets the urgency of transportation:
- V yK 0 or 1
- V yK 0 or 1
- ⁇ ′ is the adjustment parameter
- ⁇ is the variance of the utilization rate of each flight in this segment when it is not optimized
- Q K represents the utilization rate of the Kth flight without optimization, It represents the sum of the weight of the goods corresponding to the original (not optimized) cargo and mail orders assigned to the Kth flight;
- Step 5 Iteratively adjust ⁇ ′ to find the optimal target for the entire flight segment; the specific steps are:
- Variance reflects the degree of dispersion in the utilization rate of each flight in this segment, and is used to measure the balance of flight utilization.
- Step 6 Solve the main goal planning model aiming at the balance of flight utilization:
- ⁇ (m) corresponding to f is the optimal value of ⁇ , the corresponding That is the best cargo and mail delivery plan.
- the method of the present invention is used to reallocate historical cargo and mail orders and compare it with the original distribution plan. The results are shown in Figures 2 and 3.
- 1 hour is the length of the time window (24 time windows a day) , Divide the departure time of the flight carrying cargo and mail into 24 time windows, calculate the probability distribution by the ratio of the number of orders in the unit time window to the total number of orders, and make the historical cargo and mail orders and the orders distributed by using the invention Compare the probability distribution graph.
- the expedited orders are delivered from the original daily flights from 6 to 24 o'clock. After being distributed through this method, they are mainly concentrated on the daily flights from 6 to 9 o'clock in the morning, and all deliveries can be delivered before 19:00 complete.
- Figure 3 is a comparison chart of the probability distribution of flight utilization variance between January and March 2018 before and after the use of this method for cargo and mail orders.
- 0.05 is used as the sub-interval length, and each segment of the flight is used every day.
- the variance of the rate is divided into sub-intervals between [minimum variance, maximum variance], and the probability distribution is calculated by the ratio of the number of variances falling within each sub-interval to the total number of variances.
- Figure 3(a) and Figure 3(b) are the comparison graphs of the probability distribution of the variance of flight utilization before and after the optimization of the cargo and mail orders in January 2018 using this method, from Figure 3(a) and Figure 3(b). It can be seen that the variance in January was up to 1.12 from the original, and the highest variance dropped to 0.32 after optimization, and by calculating the measurement index ⁇ of the optimization degree of flight utilization balance, the average optimization degree of flight utilization balance in January was 33.22 %; Figure 3(c) and Figure 3(d) are the comparison graphs of the probability distribution of the variance of flight utilization before and after the optimization of the February 2018 cargo and mail orders using this method.
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Abstract
Description
Claims (5)
- 一种航空货邮配送方法,其特征在于,包括以下步骤:步骤一,获取航班数据和货邮订单数据;步骤二,以起飞时间的先后为顺序,对同一天同航段的航班进行排序;步骤三,针对同一天同航段所有货邮订单配送,建立以运送的缓急程度为目标的次要目标规划模型:约束条件为:其中,d为该天该航段的货邮订单总数,N为该天该航段的航班总数,B y表示第y个货邮订单的优先运送系数,其值根据货邮订单运送的缓急程度确定,V yK表示第y个货邮订单是否被装入第K个航班,V yK=1表示第y个货邮订单被装入第K个航班,V yK=0表示第y个货邮订单不装入第K个航班;W y为第y个货邮订单对应的商品重量;G K为第K个航班的运行可供,β是对于 的调节参数,β的取值范围为 为该航段的航班平均利用率, P为该天该航段所有货邮订单对应的商品重量总和,T为该天该航段所有航班的运行可供总和;步骤四,迭代调整次要目标规划模型约束条件中β的取值,记第m次迭代之后得到的β值为β (m),每次迭代之后进行以下操作:4)计算反映该航段第K个航班利用率与该航段所有航班平均利用率的离散程度的指标函数:5)计算航段中各航班利用率的方差:步骤五,若干次迭代调整之后,求解以航班利用率的均衡性为目标的主要目标规划模型:f=min{δ (0),δ (1),δ (2),...};
- 根据权利要求1所述的航空货邮配送方法,其特征在于,所述步骤一中,获取航班数据和货邮订单数据,将两种数据中的无效、空值数据进行剔除处理后提取有效信息;航班数据中的有效信息包括航班号、航班日期、起飞地点、到达地点和起飞时间;货邮订单数据中的有效信息包括每个货邮订单对应的主运单号、商品重量、运送的缓急程度以及该货邮订单原始分配至的航班信息,包括航班号、航班日期、起飞地点、到达地点和运行可供。
- 根据权利要求2所述的航空货邮配送方法,其特征在于,根据货邮订单数据中的有效信息,统计得到同一天同航段所有航班的运行可供总和,以及同一天同航段所有货邮订单对应的商品重量总和,进而计算航段的航班平均利用率。
- 根据权利要求1所述的航空货邮配送方法,其特征在于,根据货邮订单运送的缓急程度将优先运送系数划分为三个等级:第一等级B y=3,为加急订单的优先运送系数;第二等级B y=2,为易腐类订单运的优先运送系数;第三等级B y=1,为普通订单的优先运送系数。
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CN112990519B (zh) * | 2019-12-12 | 2023-06-13 | 顺丰科技有限公司 | 货件分流方法、装置、计算机可读存储介质和计算机设备 |
CN113591953B (zh) * | 2021-07-20 | 2022-06-28 | 深圳市德邦物流有限公司 | 一种动态物流大数据有效信息提取算法 |
CN114330879B (zh) * | 2021-12-29 | 2022-09-16 | 蔷薇大树科技有限公司 | 一种多维度约束的订单分配方法及系统 |
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