非線形物理学・非平衡統計力学の分野で大きな業績を上げてきた藤坂博一京大情報学研究科教授が2007年８月21日にくも膜下出血で急逝した．ここでは，大偏差統計解析に焦点をあて，時間変動する力学量の局所平均の大偏差統計特性や二時間相関関数やパワースペクトルの大偏差統計解析の枠組みでの拡張などの彼の過去の研究から，死の直前に公表された大偏差統計解析とレベルダイナミクスを結び付ける研究までを一瞥し，彼の残した問題とその一部に対する答えや今後の展望を述べる．Professor Hirokazu Fujisaka (Graduate School of Informatics, Kyoto University), who had produced good achievements in the field of the non-linear physics and nonequilibrium statistical mechanics died suddenly of subarachnoid hemorrhage on August 21, 2007. We focus to large deviation statistics and glance at his past studies including distributions of local averages and generarizations of the two-time correlation functions or power spectra within the framework of large deviation statistics. His antemortem work such as level dynamics approaches to the large deviation statistics is also reviewed. Various issues left by him are discussed.