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Archish S

dblp:423/6022 · DBLP profile ↗
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1ranked-venue papers
1as first author
1since 2021 · last 2026
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Artificial intelligence and machine learning · 1 · 1 first-author · 1 since 2021Graphics, computer vision, multimedia, augmented reality and games · 1 · 1 first-author · 1 since 2021

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Databases, data mining, and information retrieval
1 paper
Information retrieval · 100%

Topics — the 3 heaviest of 3, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Information retrieval › retrieval models › neural retrieval
late interaction
1.012026
Incorporating Token Importance in Multi-Vector Retrieval · AAAI 2026
Information retrieval › retrieval models › neural retrieval
multi-vector retrieval
1.012026
Incorporating Token Importance in Multi-Vector Retrieval · AAAI 2026
Information retrieval
retrieval models
1.012026
Incorporating Token Importance in Multi-Vector Retrieval · AAAI 2026

Methods — techniques the papers use, named apart from their topics

few-shot fine-tuning · 1.0chamfer distance · 1.0IDF weighting · 1.0
YearPublicationVenuePosition
2026 Incorporating Token Importance in Multi-Vector Retrieval
abstract
ColBERT introduced a late interaction mechanism that independently encodes queries and documents using BERT, and computes similarity via fine-grained interactions over token-level vector representations. This design enables expressive matching while allowing efficient computation of scores, as the multi-vector document representations could be pre-computed offline. ColBERT models distance using a Chamfer-style function: for each query token, it selects the closest document token and sums these distances across all query tokens. In our work, we explore enhancements to the Chamfer distance function by computing a weighted sum over query token contributions, where weights reflect the token importance. Empirically, we show that this simple extension, requiring only token-weight training while keeping the multi-vector representations fixed, further enhances the expressiveness of late interaction multi-vector mechanism. In particular, on the BEIR benchmark, our method achieves an average improvement of 1.28% in Recall@10 in the zero-shot setting using IDF-based weights, and 3.66% through few-shot fine-tuning.
Archish S, Ankit Garg 0001, Kirankumar Shiragur, Neeraj Kayal
AAAI1