trending docs: fixed maths formulas format again.

[csit.git] / docs / cpta / methodology / index.rst

diff --git a/docs/cpta/methodology/index.rst b/docs/cpta/methodology/index.rst
index 35c438d..d89a6d7 100644 (file)
--- a/docs/cpta/methodology/index.rst
+++ b/docs/cpta/methodology/index.rst
@@ -94,16 +94,16 @@ over the rolling window of last <N> sets of historical measurement data:
 Outlier Detection
 `````````````````
 
 Outlier Detection
 `````````````````
 

-Outlier evaluation of test result of value :math:`X_n` follows the
-definition from previous section:
+Outlier evaluation of test result of value *X* follows the definition
+from previous section:

 
 

-+--------------------------------------------+----------------------+
-| Outlier Evaluation Formula                 | Evaluation Result    |
-+============================================+======================+
-| :math:`X_n < \left( Q1 - 1.5 IQR \right)`  | Outlier              |
-+--------------------------------------------+----------------------+
-| :math:`X_n >= \left( Q1 - 1.5 IQR \right)` | Valid (For Trending) |
-+--------------------------------------------+----------------------+
++----------------------------+----------------------+
+| Outlier Evaluation Formula | Evaluation Result    |
++============================+======================+
+| X < (Q1 - 1.5 * IQR)       | Outlier              |
++----------------------------+----------------------+
+| X >= (Q1 - 1.5 * IQR)      | Valid (For Trending) |
++----------------------------+----------------------+

 
 Anomaly Detection
 `````````````````
 
 Anomaly Detection
 `````````````````


@@ -112,15 +112,15 @@ To verify compliance of test result of valid value <X> against defined
 trend metrics and detect anomalies, three simple evaluation formulas are
 used:
 
 trend metrics and detect anomalies, three simple evaluation formulas are
 used:
 

-+---------------------------------------------------------------------------+-----------------------------+-------------------+
-| Anomaly Evaluation Formula                                                | Compliance Confidence Level | Evaluation Result |
-+===========================================================================+=============================+===================+
-| :math:`\left( TMM - 3 TMSD \right) <= X_n <= \left( TMM + 3 TMSD \right)` | 99.73%                      | Normal            |
-+---------------------------------------------------------------------------+-----------------------------+-------------------+
-| :math:`X_n < \left( TMM - 3 TMSD \right)`                                 | Anomaly                     | Regression        |
-+---------------------------------------------------------------------------+-----------------------------+-------------------+
-| :math:`X_n > \left( TMM + 3 TMSD \right)`                                 | Anomaly                     | Progression       |
-+---------------------------------------------------------------------------+-----------------------------+-------------------+
++-------------------------------------------+-----------------------------+-------------------+
+| Anomaly Evaluation Formula                | Compliance Confidence Level | Evaluation Result |
++===========================================+=============================+===================+
+| (TMM - 3 * TMSD) <= X <= (TMM + 3 * TMSD) | 99.73%                      | Normal            |
++-------------------------------------------+-----------------------------+-------------------+
+| X < (TMM - 3 * TMSD)                      | Anomaly                     | Regression        |
++-------------------------------------------+-----------------------------+-------------------+
+| X > (TMM + 3 * TMSD)                      | Anomaly                     | Progression       |
++-------------------------------------------+-----------------------------+-------------------+

 
 TMM is used for the central trend reference point instead of TMA as it
 is more robust to anomalies.
 
 TMM is used for the central trend reference point instead of TMA as it
 is more robust to anomalies.


@@ -135,13 +135,13 @@ ago, TMM[last - 1week] and to the maximum of trend values over last
 quarter except last week, max(TMM[(last - 3mths)..(last - 1week)]),
 respectively. This results in following trend compliance calculations:
 
 quarter except last week, max(TMM[(last - 3mths)..(last - 1week)]),
 respectively. This results in following trend compliance calculations:
 

-+-------------------------+---------------------------------------------+--------------------------------+------------------------------------------------------------------------------------------------------------+
-| Trend Compliance Metric | Change Formula                              | Value                          | Reference                                                                                                  |
-+=========================+=============================================+================================+============================================================================================================+
-| Short-Term Change       | :math:`\frac{Value - Reference}{Reference}` | :math:`TMM \left[ last \right] | :math:`TMM \left[ last - 1 week \right]`                                                                   |
-+-------------------------+---------------------------------------------+--------------------------------+------------------------------------------------------------------------------------------------------------+
-| Long-Term Change        | :math:`\frac{Value - Reference}{Reference}` | :math:`TMM \left[ last \right] | :math:`max \left( TMM \left[ \left( last - 3 mths \right) .. \left( last - 1 week \right) \right] \right)` |
-+-------------------------+---------------------------------------------+--------------------------------+------------------------------------------------------------------------------------------------------------+
++-------------------------+---------------------------------+-----------+------------------------------------------+
+| Trend Compliance Metric | Trend Change Formula            | Value     | Reference                                |
++=========================+=================================+===========+==========================================+
+| Short-Term Change       | (Value - Reference) / Reference | TMM[last] | TMM[last - 1week]                        |
++-------------------------+---------------------------------+-----------+------------------------------------------+
+| Long-Term Change        | (Value - Reference) / Reference | TMM[last] | max(TMM[(last - 3mths)..(last - 1week)]) |
++-------------------------+---------------------------------+-----------+------------------------------------------+

 
 Trend Presentation
 ------------------
 
 Trend Presentation
 ------------------