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R&D / AI: mini-rag evaluation of cross-encoder efficiency

- 1 min read - 100 words
Brett Dargan
Brett Dargan
Principal Solutions Architect (AWS) | Tech Co-Founder | Product Strategy & Business Value

R&D / AI: Mini-RAG Cross-Encoder Efficiency Evaluation

Plenty of strong RAG content exists on papers and evaluation (e.g., Miraflow Guide).

Forked florianbuetow/mini-rag for local deep dive: how much efficiency gain from the cross-encoder?

Added token test in bdargan/mini-rag + bdargan/mini-rag-runner container. (Output posted below showing savings.)

See rag_token_test.py.

[TOKEN BENCHMARK REPORT]
  • Baseline Prompt Tokens (K=10): 308
  • Reranked Prompt Tokens (K=3):  112
  • Absolute Token Savings:         196
  • Efficiency Gains:               63.64%
PASSED

Key takeaways

  • Code from Gemini impressed again.
  • Follow-up: evaluate with Ragas

Priorities

- 3 min read - 600 words
Brett Dargan
Brett Dargan
Principal Solutions Architect (AWS) | Tech Co-Founder | Product Strategy & Business Value

Do you also struggle with those “frog” tasks that are important, but somehow you procrastinate enough to always put them off, till I probably used more time avoiding than it actually takes to complete. :facepalm:

Well I was trying a few ideas, beyond Eisenhower matrix, and came across the low energy task model and the Friction-Sized framework.

Google AI suggested a method to combine, so if identify tasks in md with X.Y.Z, it offered variations depending on tools used and search/filter needs see query

X=Importance (1-2) Y=Urgency (1-2) Z=Friction (1-4)

Z is 1-4 quadrants even though my rule of thumb is to batch the little things for a low energy time. I may sometimes hit those < 2mins immediately and skip the overhead of writing it down, but how many things reallly are 2mins and don’t spin you off distracted elsewhere.

An interesting experiment to help me match my mental energy with different tasks.

The “Friction-Sized” Framework

Because these tasks have deadlines and evoke reluctance, traditional advice like “Eat the Frog” actually backfires. When your mental energy is depleted, staring at a giant “frog” causes Executive Dysfunction—making you freeze and do nothing.To solve this, we must mathematically re-engineer how we measure task weight. Instead of measuring by Time (Duration), we must measure by Friction (Resistance to Start).

Total Effort = Friction (Energy to Start) + Drag (Energy to Complete)

1. The Friction Matrix

Use this 4-quadrant system to categorize both your work and personal life tasks. The goal is to isolate the “Sticky Notes”—tasks that take very little time to complete but have massive mental resistance.

Low Drag (Takes <15 Mins)High Drag (Takes >15 Mins)
High Friction(Reluctant to Start)🛑 The Sticky Notes
• Paying a bill / Renewing a license
• Sending a “difficult” but short email
• Booking a dentist appointment		🐸 The True Frogs
• Tax returns
• Writing a project proposal
• Planning a major trip
Low Friction(Easy to Start)⚡ Quick Wins
• Deleting spam / Sorting mail
• Putting away dishes
• Approving a simple request		🏃‍♂️ The Momentum Builders
• Organizing a closet / Desk
• Exercising / Walking
• Data entry while listening to music2.

2. The 3 Rules of Engagement

To defeat the “Sticky Notes” and “True Frogs” before their deadlines hit, apply these rules:

Rule 1: The “Micro-Leap” (For High Friction, Low Drag)

Never write the actual task on your to-do list. Write the absolute first physical action.

  • Instead of: “Pay car registration” (High Friction)
  • Write: “Open laptop and pull up registration email” (Zero Friction)
  • The Logic: Once the laptop is open and the email is in front of you, the friction drops to zero, and the 5-minute task gets done.

Rule 2: The 10-Minute “Micro-Block” (For True Frogs)

Do not try to “Eat the Frog” all at once. Set a timer for exactly 10 minutes. Tell yourself: “I am allowed to completely stop and quit after 10 minutes.”

  • The Logic: The hardest part of finite mental energy is the anticipation of the effort. A 10-minute boundary tricks your brain into starting. Usually, momentum takes over.

Rule 3: The Work-Life Hybrid Sweep

Never separate your personal and work to-do lists when energy is low. Your brain draws from the exact same central tank of mental energy for both. Batch your “Sticky Notes” (both work and personal) into a single 30-minute window right before lunch or at the very end of the day.