Elektronik satınalmada tedarikçi değerlendirmesi

E(lectronic)-procurement is the business-to-business purchase and sales of supplies and services over the Internet. Depending on the approach, buyers or sellers may specify prices or invite bids, and transactions can be initiated and completed. Participating companies expect to be able to control parts inventories more effectively, reduce purchasing agent overhead, and improve manufacturing cycles.As a part of e-procurement, multiple sellers of products vie for the business of a single buyer in reverse auctions. Bidding continues until a pre-established bidding period ends or until no seller is willing to bid any lower price. Reverse auctions have been identified by many large organizations as an effective tool to achieve procurement savings and with the advent of Internet, more and more companies are adopting its online version.An important problem with reverse auctions is that they are narrowly focused on price reduction. Most of the time, bidding companies are forced to sacrifice form their product quality to remain in the competition. To overcome this complication, we propose an evaluation framework where sellers can compete in several dimensions concurrently and buyers have the opportunity to procure the best compromise. The approach is based on a multi-criteria decision making technique, namely 2-additive Choquet Integral aggregation, where interactions among decision criteria pairs can be taken into account. An automatic recommendation system is developed for the sellers to adjust their offers based on the winner of the actual auction stage. The proposed framework is applied for the procurement of an IT system in a Turkish company.Keywords: E-procurement, Supplier selection, Bid evaluation, Multi-criteria decision making, Choquet integral