The document discusses distances between data and similarity measures in data analysis. It introduces the concept of distance between data as a quantitative measure of how different two data points are, with smaller distances indicating greater similarity. Distances are useful for tasks like clustering data, detecting anomalies, data recognition, and measuring approximation errors. The most common distance measure, Euclidean distance, is explained for vectors of any dimension using the concept of norm from geometry. Caution is advised when calculating distances between data with differing scales.
- The document discusses linear regression models and methods for estimating coefficients, including ordinary least squares and regularization methods like ridge regression and lasso regression.
- It explains how lasso regression, unlike ordinary least squares and ridge regression, has the property of driving some of the coefficient estimates exactly to zero, allowing for variable selection.
- An example using crime rate data shows how lasso regression can select a more parsimonious model than other methods by setting some coefficients to zero.
文献紹介:Selective Feature Compression for Efficient Activity Recognition InferenceToru Tamaki
Chunhui Liu, Xinyu Li, Hao Chen, Davide Modolo, Joseph Tighe; Selective Feature Compression for Efficient Activity Recognition Inference, Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV), 2021, pp. 13628-13637
https://openaccess.thecvf.com/content/ICCV2021/html/Liu_Selective_Feature_Compression_for_Efficient_Activity_Recognition_Inference_ICCV_2021_paper.html
The document discusses distances between data and similarity measures in data analysis. It introduces the concept of distance between data as a quantitative measure of how different two data points are, with smaller distances indicating greater similarity. Distances are useful for tasks like clustering data, detecting anomalies, data recognition, and measuring approximation errors. The most common distance measure, Euclidean distance, is explained for vectors of any dimension using the concept of norm from geometry. Caution is advised when calculating distances between data with differing scales.
- The document discusses linear regression models and methods for estimating coefficients, including ordinary least squares and regularization methods like ridge regression and lasso regression.
- It explains how lasso regression, unlike ordinary least squares and ridge regression, has the property of driving some of the coefficient estimates exactly to zero, allowing for variable selection.
- An example using crime rate data shows how lasso regression can select a more parsimonious model than other methods by setting some coefficients to zero.
文献紹介:Selective Feature Compression for Efficient Activity Recognition InferenceToru Tamaki
Chunhui Liu, Xinyu Li, Hao Chen, Davide Modolo, Joseph Tighe; Selective Feature Compression for Efficient Activity Recognition Inference, Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV), 2021, pp. 13628-13637
https://openaccess.thecvf.com/content/ICCV2021/html/Liu_Selective_Feature_Compression_for_Efficient_Activity_Recognition_Inference_ICCV_2021_paper.html
Paper Introduction "RankCompete:Simultaneous ranking and clustering of info...Kotaro Yamazaki
Paper Introduction.
RankCompete:Simultaneous ranking and clustering of information networks
https://www.researchgate.net/publication/257352130_RankCompete_Simultaneous_ranking_and_clustering_of_information_networks
cvpaper.challengeにおいてECCVのOral論文をまとめた「ECCV 2020 報告」です。
ECCV2020 Oral論文 完全読破(2/2) [https://www.slideshare.net/cvpaperchallenge/eccv2020-22-238640597/1]
pp. 7-10 ECCVトレンド
pp. 12-81 3D geometry & reconstruction
pp. 82-137 Geometry, mapping and tracking
pp. 138-206 Image and Video synthesis
pp. 207-252 Learning methods
cvpaper.challengeはコンピュータビジョン分野の今を映し、トレンドを創り出す挑戦です。論文サマリ作成・アイディア考案・議論・実装・論文投稿に取り組み、凡ゆる知識を共有します。2020の目標は「トップ会議に30+本投稿」することです。
3. はじめに ②
■ SCEDを用いた研究の共通特徴
① 1人の対象者または小規模な集団を前方視的に追跡
② 追跡期間中に、アウトカムの測定を反復的に、
高頻度に実施
③ 追跡期間中に、特定の介入を導入する時期(介入期)
としない時期(ベースライン期)を設定
https://www.jstage.jst.go.jp/article/jjbct/advpub/0/advpub_21-024/_article/-char/ja/
9. 本論文の構成
① 視覚分析の概要と信頼性
② 統計指標を利用した介入効果の評価
③ 適切な統計指標を選択する指針に関する議論
+
視覚分析と統計指標を算出するツールの紹介
https://www.jstage.jst.go.jp/article/jjbct/advpub/0/advpub_21-024/_article/-char/ja/
12. 視覚分析
■ 視覚分析を実施する際のデータの特徴
〇 レベル(level)
〇トレンド(trend)
〇 変動性(variability)
〇 重複度(overlap)
〇 効果の即時性(immediacy of effect)
〇 類似フェーズ間のデータパターンの一貫性
(consistency of data patterns across similar phases)
https://www.jstage.jst.go.jp/article/jjbct/advpub/0/advpub_21-024/_article/-char/ja/
13. 〇 レベル(level)
■ 各フェーズのデータの平均や中央値。
M = 18.96
M = 4.9
平均値差= 14.06
https://www.jstage.jst.go.jp/article/jjbct/advpub/0/advpub_21-024/_article/-char/ja/