「參數化主義 Parametricism」這一詞彙於2008年的第11屆威尼斯雙年展中被提出，在建築領域內廣為流傳並影響當代設計思維。參數式的設計在今日已有越來越多的設計者採用並廣泛的使用在建築設計、工業設計當中，設計者能藉由程式邏輯快速演算出許多參數式設計的結果，但伴隨而生的兩個課題是1.如何評定設計的優劣？2.如何與施工實踐整合？

過去，設計思考(Design Thinking) 往往被視為是一種「黑箱」(Black Box)，依靠設計者自身的美感或設計經驗來判斷最終結果，卻可能造成錯誤的評估導致後續修正的耗時，缺乏整合的設計亦會造成後續施工上的諸多麻煩。本論文逐步透過設定「合適函式(Fitness Function)」，訂定「設計準則(Design Criteria)」，並使用「回饋迴路(Feedback Loops)」搭配性能評估及模擬軟體不斷地修正、檢討參數式設計的性能，由電腦運算找出數種最佳化方案，再利用人腦的判斷決定參數式設計的最終結果，將設計思考的黑箱透明化，使設計同時兼具美感與實用性能。

在施工實踐整合方面，「建築資訊模型」BIM(Building Information Modeling) 做為一種建築資訊整合平台，將所有建築生命週期裡的各階段資訊都整合在一起，減少不同階段建築資訊轉換的錯誤、降低人為作圖上的失誤亦可在設計早期先做各項建築評估使建築設計達到永續並及早修正設計錯誤，近年來參數式設計結合BIM技術更是解決數位設計問題的趨勢。
以BIM整合參數式設計的發展背景之下，本論文包含以下核心研究問題探討：
1.參數式設計結果最佳化的架構推演，將設計思考的黑箱透明化
2.使用BIM作為建築資訊整合平台，形成一種整合式的性能導向的建築設計流程，並探討人腦與電腦的決策與回饋機制
3.探討如何透過不同的設計原則與物理環境性能評估原則結合來尋求最佳的建築設計及參數式建築皮層設計方案。
4.討論目前BIM於設計流程上尚待解決的問題

本論文以「規劃與設計學院之數位設計大樓增建案」之建築設計專案做為設計命題，演示參數式設計最佳化的實踐流程。使用軟體包括Autodesk Vasari、Revit、NavisWorks、Rhinoceros、Grasshopper、Galapagos、Geco、Ecotect、Geometry Gym。

The term - ”Parametricism” was proposed on 11th Venice Biennale in 2008, which then became a wide spreading trend in architecture domain that influence the thinking of modern design. Today, a growing number of designers widely adapt the Parametricism Design in architecture and industrial design. By using programing logic, designers can generate various Parametric Designs rapidly. However, two critical issues accompanied with the design, they are: 1) How to evaluate the design?, and 2) How to integrate with construction?
In the past, design thinking normally seems as a black box. Designers' personal aesthetic or design experience are used to judge the final results, but may lead to incorrect evaluation that cause consuming works on fixing design. Moreover, the lack of integrating design may also create numerous problems on construction. In this research, we defined “Design Criteria” by setting up “Fitness Function” accordingly. Then, we fix and review the performance of Parametric Design by cooperating “Feedback Loops” with performance evaluation and simulation software, and calculate numerous optimized solutions via computers. Finally, we determine the final design via human brain. The whole process aims to transparentize the black box of design thinking, and involve both aesthetic and performance into design.
To the perspective of integrating construction, BIM is an integrating platform for building information. The platform integrates information of each stages in building life cycles, which may reduce errors while transforming building information between each stages, and minimize human documentation errors. In addition, building evaluation can also adapted in early stage of design to achieve the goal of sustainable and fix the design errors in advance. In recent years, together with Parametric Design and BIM techniques is a coming trend on solving problems in digital design.
In the design context of integrating BIM and Parametric Design, the major issues we are going to discuss in this research includes:
1) Develop optimized design results via Parametric Design process, and transparentize the black box of design thinking.
2)Use BIM as an integration platform for building information, which form as an integrated performance oriented building design process. We discuss the decision and feedback mechanics between human brain and computer.
3)Discuss the method of developing optimized architecture design and Parametric Design through numerous design criteria and physical environment performance evaluation principles.
4)Discuss the problems need to be solved on BIM design process.

This research target the project - “Continuation of digital design building in College of Planning and Design, NCKU” as the design proposition, and process the Parametric Design to find the optimized design. The used software includes: Autodesk Vasari, Revit, NavisWorks, Rhinoceros, Grasshopper, Galapagos, Geco, Ecotect and Geometry Gym.

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