\[plotsummarisation\]. The percentage prediction error for both setups is less than 16%. Also note that the algorithms in this pattern have a similar completion time boundaries.

![Summarisation Pattern[]{data-label="plotsummarisation"}](images/summerisation.png){width="40.00000%" height="4cm"}

      **Algorithm**      **Predicted (sec)**   **Actual (sec)**   **Error%**
  --------------------- --------------------- ------------------ ------------
       MinMaxCount               196                 201              2
     Inverted Index              118                 117              -1
      Average Count              157                 176              11
   Median and Std. Dev           158                 169              7

  : Results for Summarisation on 8-Node Cluster

\[table:summarisation\]

### Filtering Pattern

In filtering, we included, Grep, Distinct and Top 100 algorithm. Table \[table:filtering\] shows the results of the experiment and the respective errors of each algorithm. We have also observed that our prediction error is less than 14% from the observed values for both setups.

![Filtering Pattern[]{data-label="plotfiltering"}](images/filtering){width="40.00000%" height="4cm"}

   **Algorithm**   **Predicted (sec)**   **Actual (sec)**   **Error%**
  --------------- --------------------- ------------------ ------------
       Grep                470                 430              -9
       Top X               45                   40             -12
     Distinct              128                 130              2

  : Results for Filtering Pattern on 8-Node Cluster

\[table:filtering\]

### Data Organisation Pattern

In data organisation, we have observed that the amount of input data is mostly the same as the amount of output data. Here data is just reorganised and there is no data pruning component. The Question and Answer Hierarchy algorithm merged data from two big data 