JP2021111411A - 医学的事実の検証方法及び検証装置、電子機器、コンピュータ可読記憶媒体並びにコンピュータプログラム - Google Patents
医学的事実の検証方法及び検証装置、電子機器、コンピュータ可読記憶媒体並びにコンピュータプログラム Download PDFInfo
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Abstract
Description
Claims (13)
- 医学的事実の記述テキストを取得することと、
医学文書から前記医学的事実の記述テキストに関連する関連段落を選別することと、
前記医学的事実の記述テキスト及び対応する関連段落を訓練された判別モデルに入力して真実性を判別することで、前記医学的事実の検証結果を得ることであって、前記判別モデルは、医学文書から抽出された医療テキスト段落ペアに基づいて事前訓練され、事前訓練後、真実性ラベル情報を含む医学的事実サンプルセットを用いて反復調整される、ことと、
を含む医学的事実の検証方法。 - 前記した前記医学的事実の記述テキスト及び対応する関連段落を訓練された判別モデルに入力して真実性を判別することで、前記医学的事実の検証結果を得ることは、
前記訓練された判別モデルを用いて前記関連段落から前記医学的事実の記述テキストとの関連度が最も高い目標関連段落を選別し、前記目標関連段落と前記医学的事実の記述テキストとの関連度が予め設定された閾値に達したと確定されたことに応じて、前記医学的事実が正確な記述であると確定することを含む請求項1に記載の方法。 - 前記した前記医学的事実の記述テキスト及び対応する関連段落を訓練された判別モデルに入力して真実性を判別することで、前記医学的事実の検証結果を得ることは、
前記訓練された判別モデルを用いて確定された前記関連段落と前記医学的事実の記述テキストとの関連度が何れも前記予め設定された閾値に達していないと確定されたことに応じて、前記医学的事実が誤った記述であると確定することをさらに含む請求項2に記載の方法。 - 前記訓練された判別モデルは、
同一の医学文書から隣接する二つの段落を医療テキスト段落ペアのポジティブサンプルとして抽出し、異なる二つの医学文書からそれぞれ一つの段落を医療テキスト段落ペアのネガティブサンプルとして抽出し、
医療テキスト段落ペアのポジティブサンプル及びネガティブサンプルに基づいて、構築された初期の判別モデルを事前訓練し、
医学的事実サンプルが正確な記述であるか否かをラベル付けするためのラベル情報を含む真実性ラベル情報を含む医学的事実サンプルセットを取得し、
前記医学的事実サンプルセットに基づいて、事前訓練された判別モデルを反復調整する
ことによって訓練されて得る、請求項1〜3のいずれか1項に記載の方法。 - 前記真実性ラベル情報は、前記医学的事実サンプルが正確な記述である場合、前記医学的事実サンプルの裏付け証拠となる医学文書の段落をさらに含み、
前記医学的事実の検証結果は、前記医学的事実が正確な記述であるか否かの検証結果と、前記医学的事実が正確な記述である場合における前記医学的事実の裏付け証拠となる医学文書の段落と、を含む請求項4に記載の方法。 - 医学的事実の記述テキストを取得するように構成される取得手段と、
医学文書から前記医学的事実の記述テキストと関連する関連段落を選別するように構成される選別手段と、
前記医学的事実の記述テキスト及び対応する関連段落を訓練された判別モデルに入力して真実性を判別することで、前記医学的事実の検証結果を得るように構成される判別手段であって、前記判別モデルは、医学文書から抽出された医療テキスト段落ペアに基づいて事前訓練され、事前訓練後、真実性ラベル情報を含む医学的事実サンプルセットを用いて反復調整される、判別手段と、
を含む医学的事実の検証装置。 - 前記判別手段は、前記訓練された判別モデルを用いて前記関連段落から前記医学的事実の記述テキストとの関連度が最も高い目標関連段落を選別し、前記目標関連段落と前記医学的事実の記述テキストとの関連度が予め設定された閾値に達したと確定されたことに応じて、前記医学的事実が正確な記述であると確定することで、前記医学的事実を検証するように構成される請求項6に記載の装置。
- 前記判別手段は、前記訓練された判別モデルを用いて確定された前記関連段落と前記医学的事実の記述テキストとの関連度が何れも前記予め設定された閾値に達していないと確定されたことに応じて、前記医学的事実が誤った記述であると確定することで、前記医学的事実を検証するようにさらに構成される請求項7に記載の装置。
- 前記装置は、同一の医学文書から隣接する二つの段落を医療テキスト段落ペアのポジティブサンプルとして抽出し、異なる二つの医学文書からそれぞれ一つの段落を医療テキスト段落ペアのネガティブサンプルとして抽出し、
医療テキスト段落ペアのポジティブサンプル及びネガティブサンプルに基づいて、構築された初期の判別モデルを事前訓練し、
医学的事実サンプルが正確な記述であるか否かをラベル付けするためのラベル情報を含む真実性ラベル情報を含む医学的事実サンプルセットを取得し、
前記医学的事実サンプルセットに基づいて事前訓練後の判別モデルを反復調整することで前記訓練された判別モデルを得ることで、
前記訓練された判別モデルを生成するように構成される訓練手段をさらに含む請求項6〜8のいずれか1項に記載の医学的事実の検証装置。 - 前記真実性ラベル情報は、前記医学的事実サンプルが正確な記述である場合、前記医学的事実サンプルの裏付け証拠となる医学文書の段落をさらに含み、
前記医学的事実の検証結果は、前記医学的事実が正確な記述であるか否かの検証結果と、前記医学的事実が正確な記述である場合における前記医学的事実の裏付け証拠となる医学文書段落と、を含む請求項9に記載の装置。 - 一つ又は複数のプロセッサと、
一つ又は複数のプログラムを記憶するための記憶装置とを含み、
前記一つ又は複数のプログラムが前記一つ又は複数のプロセッサに実行されると、前記一つ又は複数のプロセッサに請求項1〜5の何れか1項に記載の方法を実現させる電子機器。 - プロセッサに実行されると請求項1〜5の何れか1項に記載の方法が実現されるコンピュータプログラムが記憶されているコンピュータ可読記憶媒体。
- コンピュータプログラムであって、
前記コンピュータプログラムがプロセッサにより実行されると、請求項1〜5のいずれか一項に記載の方法を実現する、コンピュータプログラム。
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