Event extraction is an important task in natural language processing that focuses on mining event-related information from unstructured text. Despite considerable advancements, it still challenging to achieve satisfactory performance this task, and issues like data scarcity imbalance obstruct progress. In paper, we introduce innovative approach where employ Large Language Models (LLMs) as expert annotators for event extraction. We strategically include sample the training dataset prompt a...

Psychiatric patients have been the focus of social attention, and they may be more susceptible to hepatitis viruses. This study aims investigate prevalence influencing factors virus infection among psychiatric in East China. A total 6,5911 newly admitted at Shandong Daizhuang Hospital from 2017 2023 were included this study. Test results serum biomarkers for HBV HCV collected patients. Background information such as sex, age, ethnicity, marital status, occupation, residence, region, types...

Unmanned aerial vehicle (UAV) can act as flying base station to provide ground user (GU) with ubiquitous service in crowded or remote areas. The objective of this letter is obtain the multi-UAV coverage scheme for maximizing average capacity UAV, while simultaneously ensuring that deployed UAVs cover all massive scattered GUs. We propose dense boundary prioritized (DBPC) scheme, main idea which high priority given GU, deploy multiple UAV maximization. Particularly, DBPC feasible region...

In the disaster and remote regions, unmanned aerial vehicles (UAVs) can assist data acquisition for Internet of Things (IoT). How to cover massive IoT devices (IDs), which require diverse quality-of-service (QoS), is a crucial challenge. For UAV-assisted IoT, this paper studies deployment scheme with QoS guarantee place multiple UAVs covering all ground IDs maximizing average rate UAVs. First, ID, we propose demand based power allocation (QDPA) algorithm solve diversity respect demand. Then,...

Due to maneuverability and Line-of-Sight (LoS) path, unmanned aerial vehicle (UAV) can serve as base station provide communication coverage data collection for emerging Internet of Things (IoT) in the hotspot. However, limited spectrum resource different Quality-of-Service (QoS) requirement impose critical challenges UAV-aided IoT communications cover massive equipments (IEs). In this article, we propose QoS-guaranteed multi-UAV (QMC) scheme with interference management, which determines UAV...

This paper investigates rate splitting multiple access (RSMA) for multigroup multicast beamforming in a cache-enabled cloud radio network (C <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$^2$</tex-math></inline-formula> -RAN). To maximize the minimum weighted among all users and ensure base station (BS) transmit power backhaul capacity constraints, we jointly optimize dynamic BS clustering, message...

Orbital angular momentum (OAM) mode multiplexing has the potential to achieve high spectrum-efficiency communications at same time and frequency by using orthogonal resource. However, vortex wave hollow divergence characteristic results in requirement of large-scale receive antenna, which makes users hardly OAM signal size-limited equipment. To promote application next 6G communications, this paper proposes cooperative wireless (COW) communication scheme, can select (CUs) form aligned...

In this study, the authors study power efficiency optimisation in wireless‐powered full‐duplex relay (WFR) systems, where entire transmission process can be partitioned into wireless transfer phase (WP) and information (FP). For WFR systems with same source transmit power, powers of WP FP are same, they first prove that is a strictly concave function over time‐switching factor, an optimal time allocation scheme proposed to maximise efficiency. Then, for given protocol, strategy obtained by...

For users in hotspot region, orbital angular momentum (OAM) can realize multifold increase of spectrum efficiency (SE), and the flying base station (FBS) rapidly support real-time communication demand. However, hollow divergence alignment requirement impose crucial challenges for to achieve air-to-ground OAM communications, where there exists line-of-sight path. Therefore, we propose cooperative (ACOC) scheme, which communications with size-limited devices. The waist radius is adjusted...

Analogical reasoning is a unique ability of humans to address unfamiliar challenges by transferring strategies from relevant past experiences. One key finding in psychology that compared with irrelevant experiences, recalling ones can help better handle new tasks. Coincidentally, the NLP community has also recently found self-generating examples context large language models (LLMs) solve given problem than hand-crafted prompts. However, it yet not clear whether relevance factor eliciting...

For users in hotspot region, orbital angular momentum (OAM) can realize multifold increase of spectrum efficiency (SE), and the flying base station (FBS) rapidly support real-time communication demand. However, hollow divergence alignment requirement impose crucial challenges for to achieve air-to-ground OAM communications, where there exists line-of-sight path. Therefore, we propose cooperative (ACOC) scheme, which communications with size-limited devices. The waist radius is adjusted...

The vortex wave mode provides wireless communications with a new orthogonal resource for the multifold increase of spectrum efficiency. rate splitting multiple access (RSMA) technique realizes flexible decoding at user equipment (UE) by dividing information into private and common parts. This letter proposes RSMA based (RBVW) communications, which can enhance capability privacy performance communications. By using uniform circular array, we design transmission framework RBVW where different...

In this paper, we propose the de-code-and-forward (DF) based bidirectional wireless information and power transfer (BWIPT) in two-hop relay systems, where can decode forward from user to access point (AP), assist AP user. To maximize rate AP, derive closed form expression of optimal splitting (PS) factor, time allocation scheme obtain switching (TS) factor. Simulation results show that for both PS TS protocols, proposed DF systems improve as compared with amplify-and-forward (AF) systems.

Device-to-device (D2D) communications, which can increase system throughput, allow two cellular devices to communicate directly with each other. Compared half-duplex relay, full-duplex relay significantly improve the spectrum efficiency if self-interference be efficiently eliminated. This paper proposes a D2D communication scheme, assigns fixed transmitter as amplify-and-forward assist uplink transmission. Cellular user close download video by communications. An optimization problem is...

In the disaster and remote regions, unmanned aerial vehicles (UAVs) can assist data acquisition for Internet of Things (IoT). How to cover massive IoT devices (IDs), which require diverse quality-of-service (QoS), is a crucial challenge. For UAV-assisted IoT, this paper studies deployment scheme with QoS guarantee place multiple UAVs covering all ground IDs maximizing average rate UAVs. First, ID, we propose demand based power allocation (QDPA) algorithm solve diversity respect demand. Then,...

In this study, the authors investigate bidirectional wireless information and power transfer (BWIPT) in decode-and-forward (DF) relay systems, where can decode forward from user to access point (AP), assist AP user. The employs splitting (PS) protocol coordinate received signal energy for transmission harvesting. By converting multi-relay system rate maximisation problem into a convex optimisation problem, distributed allocation scheme is obtained maximise rate. Particularly, single-relay...

In this paper, we study the energy efficiency of bidirectional wireless information and power transfer in cooperative sensor networks, where relay node can decode forward from (SN) to base station (BS), assist BS SN. For splitting protocol, propose joint allocation scheme maximize efficiency. time switching optimal strategy are derived by studying derivative Simulation results provided verify performance our proposed schemes for networks.

Causal video question answering (QA) has garnered increasing interest, yet existing datasets often lack depth in causal reasoning analysis. To address this gap, we capitalize on the unique properties of cartoons and construct CausalChaos!, a novel, challenging Why-QA dataset built upon iconic "Tom Jerry" cartoon series. With thoughtful questions multi-level answers, our contains much longer chains embedded dynamic interactions visuals, at same time principles animation allows animators to...

To mitigate forgetting, existing lifelong event detection methods typically maintain a memory module and replay the stored data during learning of new task. However, simple combination new-task samples can still result in substantial forgetting previously acquired knowledge, which may occur due to potential overlap between feature distribution learned embedding space. Moreover, model suffers from overfitting on few rather than effectively remembering patterns. address challenges overfitting,...

For the massive users in post-disaster scenario, unmanned aerial vehicle (UAV) can rapidly establish emergency communications, and orbital angular momentum (OAM) significantly improve spectrum efficiency (SE). Due to hollow divergence alignment requirement, it is hard for receive OAM signals by using antenna-limited devices. UAV communications with line-of-sight link, we propose user cooperative receiving (UCR) scheme, which realize 2 mode multiplexing at long distance. Two (CUs) are chosen,...

Orbital angular momentum (OAM) and rate splitting (RS) are the potential key techniques for future wireless communications. As a new orthogonal resource, OAM can achieve multifold increase of spectrum efficiency to relieve scarcity but how enhance privacy performance imposes crucial challenge RS technique divides information into private common parts, which guarantee privacies all users. In this paper, we integrate downlink OAM-MIMO communications, study precoding optimization maximize sum...