Hi, can someone explain about decay functions. I understand how gaussian works - just gathers results around target. But why do you need linear / exponential? What is practical need? Let's say there are 5 records with field values: 1,2,3,4,5. I use linear decay around 3 and now decayed values are -1, 1, 3, 4, 5. Same will be with exponential. Sorting won't change. Can you give more examples how it suppose to work and what for?