網際網路起源於為美國軍方及學術界所建立的訊息傳遞通訊協定,經過一段時間的發展後此通訊協定所提供的便利性、及時性及無國界限制的訊息傳遞特性,很快地吸引個人和企業使用此協定取代部分傳統的傳遞交換訊息的方式,例如電子信件、電子報和企業的公告訊息等等。 在90年代中期網際網路的應用面不再只是單純的非商業用途,許多的企業或個人成立各式各樣的營利網站,搶攻網際網路此新生尚未開發的市場,大量資金使得網路設備供應商、ISP及網路軟體公司等等相關產業都蓬勃發展,有的經濟學家甚至將它視為「新經濟」或「第三次工業革命」,造就許多一夕成名的企業或坐擁千萬財富的網路新貴。 對入口網站而言網路廣告是最大經營收入的來源,如何充分利用網際網路的特性吸引廣告商購買網路廣告增加收益,成為入口網站的經營課題,於是目標式廣告、市調式廣告、專案式廣告等等加值性廣告一一出籠,然而要讓這些加值廣告有效發揮有賴於正確的網路廣告存貨預測模式的建立,來提供較精準的廣告存貨預測,預先對資源作規劃與分配。 本文將以實際的網站首頁服務曝光數為觀察值,除了以指數平滑法及移動平均法來進行網路廣告存貨的預測外,也會以不同的迴歸模型進行分析及預測模型的建立,進而決選出最佳的預測模式並說明實務上的應用。
American army and the academia have applied the HTTP protocol to transmitting messages at first. Over a short span of several years a lot of people and corporations also have used it instead of some traditional interfaces of transmitting messages like email, eletter, webpage and so on, because people can use it easily and conveniently and get real-time information from others wherever he or she lives in. In the late twentieth century the Internet have been applied to business field. A lot of persons and enterprises have founded every kind of websites or application software to engage in making profile in the Internet, the new and unexploited market. Great deals of fund also have related industries thrive. Therefore some economists treat it as “New Economy” or “The Third Industrial Revolution” and it has made a lot of famous corporations and young billionaires. Network advertisement is the main profile for websites. So a lot of new styles of network advertisement are published in order to attract advertisers like targeting ads, survey ads and marketing ads. Then an exactly forecasting module of inventory of network advertisement is very important to have ads system sell and arrange ads well. I will build different time-serial method and regression modules by impressions of the real website and try to find out the best forecasting function of inventory for an ads per webpage and how to implement it in real cases.