立法委員法律提案與其網絡特性研究

本文使用立法院之開放資料，觀察立法行為之「共同提案關係」。本文並將提案人作為節點，共同提案關係作為線段建立「提案網絡」，並藉由第八屆第六會期之法案提案情形，以建立立法委員之觀察方法。就本次資料蒐集範圍所呈現結果而言，本研究適用社會網絡之概念。觀察總體立院之提案網絡密度、模塊性以及「網絡中心性」為討論重心，並於細項列舉程度中心性、中介中心性、接近中心性、影響力中心性四項指標，以此對所有立法委員之提案網路，做出數值化分析嘗試。本文發現性別、大小黨、連任屆數與提案網絡中心程度有關，而與執政／在野黨、分區/不分區則較無關係。

關鍵字

社會網絡分析；立法委員；提案；中心性；政黨

並列摘要

This essay analyzes one of the important legislative acts, ＂co-sponsor (bill proposing)＂ among legislators in Taiwan and establishes a ＂sponsorship network＂. We use the open data of legislators and bill proposals from September 2014 through January 2015, which is the sixth session of the eighth Legislative Yuan members. This study applies the concept of social networks on observing co-sponsorship behavior of legislators to measure network density, modularity and ＂network centrality＂ in the parliament by these four indicators: degree centrality, between centrality, closeness centrality, and influence centrality. In conclusion, it is found that gender of the legislator, party size, the year of serving as a legislator are more correlated with ＂centrality＂, while belonging to ruling/opposition party, regional/ non-regional legislators are not significant different.