JP7344213B2 - 睡眠段階検出のための方法、コンピューティングデバイス、およびウェアラブルデバイス - Google Patents
睡眠段階検出のための方法、コンピューティングデバイス、およびウェアラブルデバイス Download PDFInfo
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Description
ステップ204において、プロセッサ101は、補償されているかどうかにかかわらず、バイタルサイン特徴を正規化する。
Claims (13)
- 睡眠段階検出の方法であって、
フォトプレチスモグラム(PPG)信号から抽出され、複数の時期のうちのそれぞれの時期に対応する複数の第1の特徴値を含んでいる第1のバイタルサイン特徴を受信するステップと、
前記複数の時期のうちの各々の中間時期について、該中間時期の睡眠段階を表す第1の指示値を、対応する前記中間時期の第1の特徴値ならびに前記複数の時期のうちの対応する前記中間時期より前の時期である先行の時期および対応する前記中間時期より後の時期である後続の時期の第1の特徴値に基づいて計算するために、第1のロジスティック回帰演算を実行するステップと
を含み、
前記第1のロジスティック回帰演算は、機械学習分類モデルを用いて実行される、方法。 - 前記第1のバイタルサイン特徴は、心拍数、パルス形状変動、および心拍変動の畳み込まれた高周波パワーのうちの1つに関する、請求項1に記載の方法。
- 前記第1のロジスティック回帰演算は、重み付けおよびシグモイド演算を含む、請求項1または2に記載の方法。
- 前記PPG信号から抽出され、前記複数の時期のうちのそれぞれの時期に対応する複数の第2の特徴値を含んでいる第2のバイタルサイン特徴であって、前記第1のバイタルサイン特徴のユーザに属する第2のバイタルサイン特徴を受信するステップと、
前記複数の時期のうちの各々の中間時期について、該中間時期の睡眠段階を表す第2の指示値を、対応する前記中間時期の第2の特徴値ならびに前記複数の時期のうちの対応する前記中間時期より前の時期である先行の時期および対応する前記中間時期より後の時期である後続の時期の第2の特徴値に基づいて計算するために、第2のロジスティック回帰演算を実行するステップと、
前記複数の時期のうちの各々の中間時期の睡眠段階を、前記対応する第1および第2の指示値に基づいて決定するために、さらなるロジスティック回帰演算を実行するステップと
をさらに含み、
前記第2のロジスティック回帰演算は、機械学習分類モデルを用いて実行される、請求項1~3のいずれか一項に記載の方法。 - 前記ロジスティック回帰演算のうちの一のロジスティック回帰演算は、前記ロジスティック回帰演算のうちの他のロジスティック回帰演算の重み値とは異なる重み値を有する、請求項4に記載の方法。
- 前記PPG信号から抽出され、前記複数の時期のうちのそれぞれの時期に対応する複数の第3の特徴値を含んでいる第3のバイタルサイン特徴であって、前記第1のバイタルサイン特徴のユーザに属する第3のバイタルサイン特徴を受信するステップと、
前記複数の時期のうちの各々の中間時期について、第3の指示値を、対応する前記中間時期の第3の特徴値ならびに前記複数の時期のうちの対応する前記中間時期より前の時期である先行の時期および対応する前記中間時期より後の時期である後続の時期の第3の特徴値に基づいて計算するために、第3のロジスティック回帰演算を実行するステップと
をさらに含み、
前記さらなるロジスティック回帰演算は、前記複数の時期のうちの各々の中間時期の睡眠段階を、前記対応する第3の指示値が前記対応する中間時期の睡眠段階を表す場合に、前記対応する第3の指示値にさらに基づいて決定するように実行され、
前記第3のロジスティック回帰演算は、機械学習分類モデルを用いて実行される、請求項4または5に記載の方法。 - ロジスティック回帰のための前記機械学習分類モデルをトレーニングするステップをさらに含み、
前記トレーニングするステップは、
基準睡眠段階情報に関連するトレーニングのためのバイタルサイン特徴を受信するステップと、
前記トレーニングのためのバイタルサイン特徴および前記基準睡眠段階情報から、複数のサブサンプルを含む相互検証セットを生成するステップと、
複数の機械学習パラメータセットの各々により、前記機械学習分類モデルを使用して、前記サブサンプルのうちの各サブサンプルを、前記サブサンプルのうちの他のサブサンプルを参照して計算するステップと、
前記基準睡眠段階情報と前記計算の結果との比較に基づいて、前記パラメータセットのうちの1つを前記機械学習分類モデルに関連付けるステップと
を含む、請求項1に記載の方法。 - 前記トレーニングのためのバイタルサイン特徴は、心拍数、パルス形状変動、および心拍変動の畳み込まれた高周波パワーのうちの1つに関する、請求項7に記載の方法。
- 前記基準睡眠段階情報に関連するさらなるトレーニングのためのバイタルサイン特徴を受信するステップ
をさらに含み、
前記さらなるトレーニングのためのバイタルサイン特徴は、前記トレーニングのためのバイタルサイン特徴のユーザに属し、前記トレーニングのためのバイタルサイン特徴とは異なっており、
前記相互検証セットは、前記さらなるトレーニングのためのバイタルサイン特徴からさらに生成される、請求項7または8に記載の方法。 - 前記相互検証セットを生成するステップは、
前記トレーニングのためのバイタルサイン特徴を前記基準睡眠段階情報と組み合わせて前記相互検証セットを導出すること
を含む、請求項7~9のいずれか一項に記載の方法。 - 前記トレーニングのためのバイタルサイン特徴は、正規化される、請求項7~10のいずれか一項に記載の方法。
- 前記トレーニングのためのバイタルサイン特徴は、欠落部分に関して補償される、請求項7~11のいずれか一項に記載の方法。
- 前記欠落部分は、最大プーリングを使用して補償される、請求項12に記載の方法。
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