Hao Qin

activity

20232026

collaborators

Showing 2026Show all

3 papers · 1 filter

hep-ph2026

Displaced tracks as a signal of dark matter co-annihilation: a case study using inert doublet model at $e^{+} e^{-}$ collider

Hrishikesh Deka, Subhaditya Bhattacharya, Amir Subba +1

Dark sector containing heavy (charged) particles with small mass splitting with dark matter (DM) can co-annihilate and produce correct relic density, evading direct detection bound…

cs.LG2026

Optimal and Efficient Contextual Combinatorial Semi-bandits with General Function Approximation

Hao Qin, Chicheng Zhang

We study the contextual combinatorial semi-bandit (CCSB) problem with general reward function approximation. At each round, the learner observes a context, selects a combinatorial…

cs.LG2026

Taming the Monster Every Context: Complexity Measure and Unified Framework for Offline-Oracle Efficient Contextual Bandits

Hao Qin, Chicheng Zhang

We propose an algorithmic framework, Offline Estimation to Decisions (OE2D), that efficiently reduces contextual bandit learning with general reward function approximation to offli…

Displaced tracks as a signal of dark matter co-annihilation: a case study using inert doublet model at e+e− collider

Optimal and Efficient Contextual Combinatorial Semi-bandits with General Function Approximation

Taming the Monster Every Context: Complexity Measure and Unified Framework for Offline-Oracle Efficient Contextual Bandits

Displaced tracks as a signal of dark matter co-annihilation: a case study using inert doublet model at $e^{+} e^{-}$ collider