Multi agent systems on wireless sensor networks a distributed reinforcement learning approach

... Multi- agent Learning 2.1 CHAPTER: Multi- agent Learning A possible approach to multi- agent learning is to regard the MAS as a large single agent whose state and action spaces are the concatenation of ... the MAXQ approach to multi- agent RL The main idea of [52] is to take advantage of the hierarchy approach and enable communication at high level tasks only Each node uses the same MAXQ hierarchy ... observability is to enable the agents to exchange information via communication 2.3.2 Multi- agent learning with communication Allowing agents to communicate with one another in a multi- agent domain...

Báo cáo hóa học: " Modelling the guaranteed QoS for wireless sensor networks: a network calculus approach" ppt

... of the arrival self-similar traffic flow is a key in advance in the case Then, we can obtain the guaranteed QoS by regulating the average arrival rate r and the burst tolerance b of self-similar ... 3.3 Guaranteed QoS The guaranteed QoS provides the QoS guarantees which involve the stability of performance, the usability and reliability of calculation resources, as well as the rationality ... algebra and max-plus algebra applied to qualitative or quantitative analysis for networks in recent years, and it belongs to tropical algebra and topical algebra Network calculus can be classified...

Báo cáo hóa học: " Research Article Modelling and Implementation of QoS in Wireless Sensor Networks: A Multiconstrained Trafﬁc Engineering Model" pdf

... to a source and carry the information concurrently to the destination in order to achieve load balancing and rapid delivery of the information In a wireless sensor network, both single paths and ... reveals a gain which increases with the reduction of the play-back delay Note however that while multipath routing may result in playback delay gain, increasing the path multiplicity can increase ... [3] C Intanagonwiwat, R Govindan, and D Estrin, “Directed diﬀusion: a scalable and robust communication paradigm for sensor networks,” in Proceedings of the ACM/IEEE Annual International Conference...

Báo cáo hóa học: " Research Article An Energy-Efﬁcient MAC Protocol in Wireless Sensor Networks: A Game Theoretic Approach" pptx

... Non-cooperative game Co-operative game Complete information game Game of strategy and chance Dynamic (sequential) game Static (Simultaneouse) game Figure 1: Classiﬁcation of games Superframe-1 Active ... collision and less idle waiting time in backoﬀ procedure In “Incomplete Game , access delay performance is far better than “NM”, and comparable with “IBM”, as it can easily adapt the variable game state ... collision and low waiting time in backoﬀ procedure For “Incomplete Game channel eﬃciency almost keep constant after 30 nodes, as each node can adapt to the variable game state and choose corresponding...

Distributed optimisation in wireless sensor networks a hierarchical learning approachs

... known as Temporal-Diﬀerence (TD) Learning, e.g Q -learning (Watkins and Dayan, 1992) Watkins and Dayan’s Q -learning is based on Q-functions rather than value functions, 17 CHAPTER STOCHASTIC PLANNING ... domain To date, it has found applications in a variety of areas: target tracking (Evans et al., 2005), sensor networks applications (Yeow et al., 11 CHAPTER STOCHASTIC PLANNING Figure 3.1: Markov ... state x at initialisation r The reward received by a control agent after taking an action and entering a new system state c Vector of costs incurred by a control agent after taking an action and...

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Báo cáo toán học: " A virtual infrastructure based on honeycomb tessellation for data dissemination in multi-sink mobile wireless sensor networks" pot

... A virtual infrastructure based on honeycomb tessellation for data dissemination in multisink mobile wireless sensor networks Ay¸eg¨l T¨ys¨z Erman∗ , Arta Dilo and Paul Havinga s u u u Pervasive ... and challenges of using mobile sinks in WSNs Next, we introduce our virtual infrastructure based on honeycomb tessellation and the protocol based on it, hexagonal cell -based data dissemination (HexDD) ... the data towards the rendezvous area instead of storing it locally Thus, the virtual infrastructure enables data persistence against node failures Main disadvantage of using a virtual infrastructure...

A Survey on Network Security and Attack Defense Mechanism For Wireless Sensor Networks pdf

... Data Traditional sensor network wireless Attack Data Traditional sensor network wireless or Random Kay Predistribution Data and information spoofing, Attacks in information in Transit Traditional ... sensor network wireless REWARD Blackhole attacks Traditional sensor network wireless Tiny Sec Data and Information spoofing, Message Replay Attack Data and Information spoofing, Message Replay ... active attacks involve some modifications of the data steam or the creation of a false stream in a WSN  Mote-class versus laptop-class attacks: In moteclass (sensor- class) attacks, an adversary attacks...

Báo cáo hóa học: " A Novel Cluster-Based Cooperative MIMO Scheme for Multi-Hop Wireless Sensor Networks" ppt

... [2] an equal transmit power allocation scheme is used as the channel state information (CSI) is not available at the transmitter If the average attenuation of the channel for each cooperative ... data as an individual antenna with transmission power Pout jt in the MIMO antenna array In the cooperative MIMO scheme, the transmission delay and channel estimation scheme proposed in [3] can ... perform data aggregation to remove the redundancy in the data After aggregating received data frames, the cluster head will forward the data packet to the TCH by multiple hops routing In each...

Tài liệu Teamwork in Multi-Agent Systems: A Formal Approach pptx

... the overarching architecture behind TeamLog from Kim Does, Harmen Wassenaar, Alina Strachocka and Andrzej Szałas In addition, Kim, Michał and Alina also offered a great support by bringing numerous ... ‘relevance awareness’ are often used in approaches for ˚ modeling agents’ awareness by concepts such as explicit knowledge (Agotnes and Alechina, 200 7a) Teamwork in Multi-Agent Systems: A Formal Approach ... string aba is embeddable in itself, in aaba and in abca (notation aba ≤ abca), but not in aabb Parikh and Krasucki (1992) extend this notion to so-called C-embeddability for the epistemic language...

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On the Lifetime of Wireless Sensor Networks

... strong diversity of coexistent deﬁnitions In this section, we summarize the most common deﬁnitions in the form of a survey of lifetime deﬁnitions 2.1 Network Lifetime Based on the Number of Alive ... when either the percentage of alive nodes or the size of the largest connected component of the network drop below a speciﬁed threshold However, this deﬁnition only considers the size of the largest ... most others They deﬁne the lifetime of a sensor network as the minimum of three points ACM Transactions on Sensor Networks, Vol 5, No 1, Article 5, Publication date: February 2009 On the Lifetime...

Báo cáo hóa học: "IDEA1: A validated SystemC-based system-level design and simulation environment for wireless sensor networks" pot

... read the sensor data with kHz sample rate and send the data to the coordinator within a short latency At the early stage, some preliminary designs based on the existing hardware platforms and ... platforms 5.2 Simulation results For each algorithm, many cases with different configurations of parameters (e.g., payload, superframe length, macMaxCSMABackoffs, and macMaxFrameRetries) have ... Cite this article as: Du et al.: IDEA1: A validated SystemC-based systemlevel design and simulation environment for wireless sensor networks EURASIP Journal on Wireless Communications and Networking...

Báo cáo hóa học: "Energy consumption and lifetime analysis in clustered multi-hop wireless sensor networks using the probabilistic cluster-head selection method" pdf

... respectively Then, the cluster-heads and the sink node distribute the schedules to their clustered nodes and the cluster-heads in the network, respectively In the case of the cluster-heads, the schedules ... article as: Choi and Lee: Energy consumption and lifetime analysis in clustered multi-hop wireless sensor networks using the probabilistic cluster-head selection method EURASIP Journal on Wireless Communications ... prediction than the other models in determining the optimal probability of being a cluster-head, thus minimizing the energy consumed in the network The optimal probability p* obtained from the Newton...

Báo cáo hóa học: " Research Article A Fast Network Conﬁguration Algorithm for TDMA Wireless Sensor Networks" pot

... before issuing a DSC packet Once again, it Table 1: Relevant simulation parameters CSMA/CA Parameter macMinBE macMaxBE MaxCSMABackoﬀs AckWaitDuration macMaxFrameRetries Value ms PHY layer and ... resolution algorithm, namely, simplicity and fairness We took the conﬁguration phase of SAMAC (a TDMA- based synchronous MAC protocol) as a case study and carried out a performance evaluation by means ... issuing a Parent Available (PA) packet or beacon The conﬁguration process requires that the nodes that are already part of the network oﬀer themselves as local coordinators by broadcasting PA packets...

Báo cáo hóa học: " Research Article Trade-Offs between Energy Saving and Reliability in Low Duty Cycle Wireless Sensor Networks Using a Packet Splitting Forwarding Technique" docx

... CRT-based approach also in a network where nodes alternate between sleep and awake state, both reliability and energy saving can be achieved with a moderate increase in the overall complexity and with ... parameters accordingly [1] G Campobello, A Leonardi, and S Palazzo, A novel reliable and energy- saving forwarding technique for wireless sensor networks, ” in Proceedings of the 10th ACM International ... algorithm parameters in order to obtain a reasonably trade-oﬀ between energy consumption and reliability Finally, through simulations, we have assessed the results obtained analytically, and we have...

Báo cáo hóa học: " Research Article A Novel Secure Localization Approach in Wireless Sensor Networks" pot

... Locator Sensor Attacker S3 L5 L2 Locator Sensor Attacker (a) (b) Figure 1: The attack scenarios in WSN (a) Attacker model in range-based localization; (b) Attacked locators with temporal and spatial ... and Z Wang, A secure localization approach against wormhole attacks using distance consistency,” EURASIP Journal on Wireless Communications and Networking, vol 2010, 11 pages, 2010 L Lazos and ... H(ts ) An example of the distance-consistent spooking attack is shown in Figure 1 (a) As two colluding attackers A1 and A2 can communicate with each other via an attack link, locators L4 , L5 and...

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