Slides: RAG Evaluation Is Broken! Here's Why (And How to Fix It) - Yuval Belfer and Niv Granot

Source Video

RAG Evaluation Is Broken! Here's Why (And How to Fix It) - Yuval Belfer and Niv Granot

Relationship To World's Fair 2026

These slides are extracted from a public AI Engineer YouTube video connected to World's Fair 2026. Speaker-matched clips are supporting context unless later confirmed as exact session recordings; official livestream recordings are day-level/event-level source material.

Related Scheduled Sessions

Extracted Slides

slide-001.jpg

OCR text:

RAG is already solved.

£ rd 7

° aa | ya i

a by UR eye teers CeloL aoe

slide-002.jpg

OCR text:

Prob lems Local questions, local answers

e Assuming an answer lies in a certain chunk

\

ma

slide-003.jpg

OCR text:

Prob le ms Local questions, local answers

e Assuming an answer lies in a certain chunk

Multi-hop questions are not realistic

e “If my future wife has the same first name as the 15th first lady

of the United States’ mother and her surname is the same as

the second assassinated president's mother's maiden name,

what is my future wife's name?” (from: FRAMES)

7 ¥. 7

ae

slide-004.jpg

OCR text:

Prob le ms Local questions, local answers

e Assuming an answer lies in a certain chunk

Multi-hop questions are not realistic

e “If my future wife has the same first name as the 15th first lady

of the United States’ mother and her surname ts the same as

the second assassinated president's mother's maiden name,

what is my future wife's name?” (from: FRAMES)

No holistic way to test the entire system

e Retrieval-only benchmarks

e Generation-only benchmark (grounding)

e What about chunking? What about parsing?

Un rn 7 :

slide-005.jpg

OCR text:

1. Build RAG systems for flawed

benchmarks

2. Celebrate our awesome benchmark

The scores

Vicious 3. Watch real users struggle

Cycle 4. Create new benchmarks with the

same problems

5. Rinse and repeat

ever]

a

slide-006.jpg

OCR text:

Example FIFA World Cup

e Which team has won the FIFA World Cup the most times?

e In how many FIFA World Cups did Brazil participate?

e List all teams that have never won the FIFA World Cup but have

reached the top 3.

1994 FIFA World Cup Fy te nenquegee

Reed 13° vewtat ee, Tom |

1998 FIFA World Cup Fy 02 enguagen —

2002 FIFA World Cup ta eee eT ee

— Ra KE cn akin, ree

Fem Hepes Re hee ov rhgee ‘Works Cup UGA D4

ferecmewen meni poi ccomaewsititanein WorldCupUSAS4

The 2002 PFA Wertd Cup sho branded os Kevea/Japen 3002 wen he V7 FA 2002 FWA Worle Cup a@e

Ae rene baal word chempsorane bee ma eee “—e nevtea gue paneii=ci toe FIFA World Cup Seaman

gered by FA Eine Hats Sere 9 May 0 Rane Tae ae aan Roves ard $00 P04 Wetter Keen e@ cement

a RAR a NMAC owt by dager Mer nal em ea ee 2002 FRAD-Ab Ao 7 RS Joupe de Monde - France 08 (5 107.r) ta Se

During th apereng canwnary Ihe Chemonneng wes Oeclired ODered try Ieee / Sine

Soe eg ee Dae es SR? AE, Geuewete Laupes Deciatastcpgons: = WS

(A Sand of 32 tearre qusdined tor ea Word Cup mach ene the fea © te head in Ave GX theerg Socoee Heaxy

Pea teat ty be Pend cnet Of It Acres ae or fs Ca at wed as Pie end bo be oaray \.

Sosted by more Pan one Ambo hee fle eee and rene Sate Pee Perumal Gate:

nr we pie a Terese tang he ony Gebvtart i quaity roe ha ye ee

re r¥"3) x y wome cur —

A ry ard weprne tends Wah cided Pe defending, fe

é bh : peo nha grove stage wher serrung a engie port 202 Torerteampat Gxietis

D fa a A ee ee FIFA WORLD CUP ( opentry Preece

= an KOREA JAPAN

slide-007.jpg

OCR text:

Common

RAG Retrieval Generator Score

Pipelines Pipeline

« Common

Fail | 088

wees FUN eet Cage “i O

ser FOpenar | 8

rey ms

PD eee

slide-008.jpg

OCR text:

High Level ldea

Query

FIFA World Cup

Unstructured

DataStructure

Corpus

ONAIR

slide-009.jpg

OCR text:

1. Cluster

_ 2. Identify Schema

Ingestion: 3. Populate

Flow 4. Upload

Kor 73) A

slide-010.jpg

OCR text:

Ingestion - Schema Creation

World Cup

Year: int(1900-2100)

Corpus Schema Winner: Team

(FIFA) (SemanticObject) || Top3: List{Teams]

TopScorer: Tuple[Player, int]

ey aa

74

slide-011.jpg

OCR text:

Challenges e Not every corpus/query is relational DB material

e Normalization (West Germany, South Korea and

Japan)

o Both during ingestion and inference

e Abstinence & Ambiguity

o Did Real Madrid win in the 2006 Final? (Not

world cup)

e Clustering and inferring schema (clear trade-off

on complexity)

e Text2SQL over complex schemas

ne ae

Slide-Derived Subjects To Review

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