Advanced Optimizationin ISDB

• Zero-delay filtering

  • Should be the default
    • Most users don’t care about zero-delay transitions, only final value
    • Smaller benchmark databases

• Zero-delay sequencing

  • Overhead proportional to number of zero-delay transitions
    • Sequencing all transitions can be expensive

• Further data compression

  • Faster & smaller: win-win

• Aggressive inter-event compression

  • Much smaller databases (40% - 85% smaller)
  • But can be slower (15% - 80% slowdown)
  • Speed vs. Size tradeoff

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