【正文】 , 1993, pp. 516– 519. [7] K. Itonori, Table structure recognition based on textblock arrangement and ruled line position, Proceedings of 2nd International Conference on Document Analysis and Recognition, Tsukuba Science City, Japan, Oct. 20– 22, 1993, pp. 765– 768. [8] . Shamilian, . Baird, . Wood, A retargetable table reader, Proceedings of 4th International Conference on Document Analysis and Recognition, Ulm, Germany, Aug. 18– 20,1997, pp. 158–163. [9] . Chiang, . Tue, . Leu, A new algorithm for line image vectorization, Pattern Recognition 31 (10) (1998) 1541–1549. 7 建筑項目招投標 楊曹 *,王建民 ,b, 李亨 a 建筑部門和房地產(chǎn)、香港理工大學(xué)、香港、中國 b 國家重點實驗室的小說軟件技術(shù)、南京大學(xué)、南京 210093,中國 摘要 目前在工程建設(shè)項目行業(yè)中，以工程招投標為特征的建筑市場已經(jīng)形成，施工企業(yè)為創(chuàng)造良好經(jīng)濟效益，必須嚴格控制成本，加強成本控制管理，才能提高市場適應(yīng)能力和競爭力。s risk appetite and behavioral characteristics with changes in the external environment change, when the default punishment is light, the bidder preference appetite for risk and default penalties, with the increase exceeds a certain value, the risk of bidders to show preference for behavior change to avoid the risk of penalties, the greater the bidder biased in favor of a more riskaverse behavior, the results of the control and prevention of risk behavior of bidders has an important and practical significance Construction Cost Management from the quantityone price plan model to price of separation volume model of the market, and gradually establish a market pricebased price formation mechanism, the price of the decision in the hands of the parties involved in the market, and ultimately the allocation of resources through the market in order to realize through the market mechanism to decide on project cost. This will standardize the construction marketpetitive behavior and the promotion of project bidding mechanisms play an important role in innovation. It can be said that the implementation of the project bill of quantities is a project cost mana gement 4 system in our country a big step forward, but also in China39。s macro regulation and control, enterprise autonomy offer, the market will price principle, to implement the implementation specification bill of quantity. Inventory Valuation bidding activities are based on market economy mechanism, based on legal, scientific, fair, open and reasonable way to determine the winning bidder of an economic activity. Bidding is bidding activities constitute two basic aspects. The bidding activity is merely that by bidding to choose the one with the work Construction process capability, moderate cost, quality is excellent, short duration of construction enterprises, and this is the ultimate goal tender. I have participated in internships over the course of the project bidding, and pleted over part of the calculation of quantities, bined with graduate experience in the design process, a brief analysis of the mode Quantities Call for Tender The meaning of risk and risk characteristics of the general construction, the lowest price sealed bidding construction method produces several risks and incentives, according to their characteristics discussed the feasibility of risk control and prevention. Comparison of engineering and engineering security risk management, insurance, similarities and differences between the two projects and benefits。s construction market, improve the construction quality and played an active role. But in the process of implementing exist some disadvantages, needs to perfect, enrich and improve. This project bidding documents in accordance with the bidding law of the People39。s construction market, impr