隨著物聯網的興起，資料分析和機器學習成為了熱門的研究議題。藉由大量的資料，我們能夠從中獲取重要的資訊。由於資料蒐集的方便性，所得到的資料集往往是高維度且未標籤的，若沒有經由適當的前處理，資料集當中容易出現冗餘或異常的資料，進而影響機器學習演算法的學習成效。為了解決上述困境，特徵選擇演算法成為了一個常見的前處理方法，用以篩選重要的特徵，在非監督式學習效果尤其顯著。
在非監督式學習中，最廣為人知的是分群問題。分群演算法有k-平均演算法、階層式分群法及均值偏移分群法…等等，即使透過這些傳統演算法能得到相對不錯的分群結果，但是依舊無法得知「哪些是重要的特徵？」及「如何決定適當的群聚數量？」。本文基於模糊邏輯及基因演算法提出了一個分群演算法，不僅能夠找出重要的分群特徵，也能找到該資料集適合分為幾群，並輸出if-then形式的模糊分群規則，讓人類能夠輕易地解讀分群依據。實驗部分將會將此演算法用於現實環境的資料集，以驗證演算法的表現。

With the increasing popularity of Internet of Things, big data analysis becomes an important topic. By using multi-sensors devices, we can easily gather real life data and mine important information from them. These datasets are mostly high-dimensional data, and most of them are unlabeled. Therefore, reducing high dimensional data by using feature selection to choose important feature sets becomes an important topic in machine learning, especially in unsupervised learning. There are many kinds of clustering algorithms, such as k-means, hierarchical clustering, mean shift clustering, etc. Although we can get comparatively better result, we are still interested in “Which feature contributes to the result of clustering?” and “What is the correct number of clusters?” . In this paper, we propose a clustering algorithm not only finds significant and important features, but also proper number of clusters with clustering rules which human can easily interpret. Experimental results show that the proposed algorithm can perform well in the real-environment wine dataset.

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