From 9327f75e84a3b1cc79f8e63a34d74feba2702409 Mon Sep 17 00:00:00 2001 From: Thomas Enzlein Date: Sat, 17 Aug 2024 10:40:49 +0200 Subject: [PATCH] more fixes --- manual.Rmd | 6 ++++++ manual.md | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/manual.Rmd b/manual.Rmd index 5dbaba5..5f0c3be 100644 --- a/manual.Rmd +++ b/manual.Rmd @@ -181,6 +181,7 @@ The $Log_2FC$ denotes the magnitude i.e. effect size of a response. It is define $$ Log_2 FC =log_2\frac{a_u}{a_l} $$ + where $a_u$ and $a_l$ the upper and lower asymptotes. In short: The $Log_2FC$ gives the raw (no variation of data points considered) difference between the upper and lower part of the curve. @@ -211,11 +212,15 @@ fcScore= \frac{|log_2FC|}{log_2FC} \end{cases} $$ + and + $$ vScore=V'_{mod.} $$ + and + $$ zScore= \begin{cases} @@ -223,6 +228,7 @@ zScore= \frac{Z'_{mod.}}{0.5} \quad for \quad 0.5 > Z'_{mod.}>-0.5 \end{cases} $$ + The *CRS* combines three measures used to describe the quality of a response curve, the effect size defined as $Log_2FC$ and incorporated in the fcScore, the $V'_{mod.}$ factor being equal to the vScore and the $Z'_{mod.}$ factor used in the definition of the zScore. In the fcScore, the $Log_2FC$ is normalized by and thresholded at $Log_2FC_{max}=2.59$ . The factor is chosen to not overrate features that exhibit substantial changes. The restriction of the $Z'_{mod.}$ factor to the zScore is made due to the common interpretation of the *Z’* factor (Zhang, Chung and Oldenburg 1999). For $Z'_{mod.}>0.5$ a bioassay is said to be excellent, since for $\sigma_l=\sigma_u$ a value of 0.5 is equivalent to a separation of 12 standard deviations between $\mu_u$ and $\mu_l$ . Accordingly, a value of -0.5 is equivalent to a separation of 3 standard deviations between $\mu_u$ and $\mu_l$ for $\sigma_l=\sigma_u$ . The rather moderate lower threshold is in particular of importance for MALDI MS-based bioassay exhibiting a relatively high variance in the data. ### Metrics subtab diff --git a/manual.md b/manual.md index 7a09646..b9d01a4 100644 --- a/manual.md +++ b/manual.md @@ -181,6 +181,7 @@ The $Log_2FC$ denotes the magnitude i.e. effect size of a response. It is define $$ Log_2 FC =log_2\frac{a_u}{a_l} $$ + where $a_u$ and $a_l$ the upper and lower asymptotes. In short: The $Log_2FC$ gives the raw (no variation of data points considered) difference between the upper and lower part of the curve. @@ -211,11 +212,15 @@ fcScore= \frac{|log_2FC|}{log_2FC} \end{cases} $$ + and + $$ vScore=V'_{mod.} $$ + and + $$ zScore= \begin{cases} @@ -223,6 +228,7 @@ zScore= \frac{Z'_{mod.}}{0.5} \quad for \quad 0.5 > Z'_{mod.}>-0.5 \end{cases} $$ + The *CRS* combines three measures used to describe the quality of a response curve, the effect size defined as $Log_2FC$ and incorporated in the fcScore, the $V'_{mod.}$ factor being equal to the vScore and the $Z'_{mod.}$ factor used in the definition of the zScore. In the fcScore, the $Log_2FC$ is normalized by and thresholded at $Log_2FC_{max}=2.59$ . The factor is chosen to not overrate features that exhibit substantial changes. The restriction of the $Z'_{mod.}$ factor to the zScore is made due to the common interpretation of the *Z’* factor (Zhang, Chung and Oldenburg 1999). For $Z'_{mod.}>0.5$ a bioassay is said to be excellent, since for $\sigma_l=\sigma_u$ a value of 0.5 is equivalent to a separation of 12 standard deviations between $\mu_u$ and $\mu_l$ . Accordingly, a value of -0.5 is equivalent to a separation of 3 standard deviations between $\mu_u$ and $\mu_l$ for $\sigma_l=\sigma_u$ . The rather moderate lower threshold is in particular of importance for MALDI MS-based bioassay exhibiting a relatively high variance in the data. ### Metrics subtab