关键词: PDA范式, 相关市场, 中心-外围, 生态垄断, 结构性权力

Abstract: The flow of data elements reflects the transmission of market supply and demand signalsThe essence of traffic competition is the competition for trading opportunitiesThe core function of digital platform is circulation，which focuses on improving the efficiency of information matching to compete for attention，which determines that the scope of matching objects can be infiniteHowever，the definition of relevant market focusing on production will be difficult to define the “benchmark product” because the matching market spans multiple production fields，so it is difficult to determine the attentionrelated market represented by trafficBased on the “connection-one structure”perspective，this paper argues that there are three roles in the digital ecology: center，sub-center and periphery，and further strengthens the pattern of the center monopolizing the traffic entrance from the three dimensions of “platform-data-algorithm”(PDA paradigm)，forming a “center-periphery” dependency exploitation system in which the center is to the sub-center and the subcenter is to the peripheral cost in turnIn this paper，three regulatory approaches are proposed for the traffic monopoly with the purpose of controlling the distribution of trading opportunitiesFirst，the relevant time market should be highlighted in the framework of antitrust analysisSecond，expand the connotation of transaction counterpart in the anti-monopoly law，and realize the interconnection between the structural platform and the connected platform with the goal of cross-ecological opening；Third，introduce the principle of open platform，define the necessary facilities for structural platform，and build the oligopoly competition rules of digital platform

Key words: PDA paradigm, relevant market, core and periphery theory, ecosystem monopoly, structural power