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Efficiency-Driven Custom Chatbot Development: Unleashing LangChain, RAG, and Performance-Optimized LLM Fusion

Computers, Materials & Continua 2024年第8期80卷 2423-2442页

作者： S.Vidivelli manikandan ramachandran A.Dharunbalaji School of Computing SASTRA Deemed UniversityThanjavurTamilnadu613401India

This exploration acquaints a momentous methodology with custom chatbot improvement that focuses on pro-ficiency close by *** accomplish this by joining three key innovations:LangChain,Retrieval Augmented Generation(RAG),and enormous language models(LLMs)tweaked with execution proficient strategies like LoRA and *** takes into consideration fastidious fitting of chatbots to explicit purposes,guaranteeing engaged and important collaborations with ***’s web scratching capacities engage these chatbots to get to a tremendous store of data,empowering them to give exhaustive and enlightening reactions to *** recovered data is then decisively woven into reaction age utilizing LLMs that have been calibrated with an emphasis on execution *** combination approach offers a triple advantage:further developed viability,upgraded client experience,and extended admittance to *** become proficient at taking care of client questions precisely and productively,while instructive and logically pertinent reactions make a more regular and drawing in cooperation for *** last,web scratching enables chatbots to address a more extensive assortment of requests by conceding them admittance to a more extensive information *** digging into the complexities of execution proficient LLM calibrating and underlining the basic job of web-scratched information,this examination offers a critical commitment to propelling custom chatbot plan and *** subsequent chatbots feature the monstrous capability of these advancements in making enlightening,easy to understand,and effective conversational specialists,eventually changing the manner in which clients cooperate with chatbots.

关键词： LangChain retrieval augumental generation(RAG) fine tuning

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Intelligent Framework for Secure Transportation Systems Using Software-Defined-Internet of Vehicles

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Computers, Materials & Continua 2021年第9期68卷 3947-3966页

作者： Mohana Priya Pitchai manikandan ramachandran Fadi Al-Turjman Leonardo Mostarda School of Computing SASTRA Deemed UniversityThanjavur613401India Research Centre for A.I.and IoT Near East UniversityNicosiaMersin10Turkey Department of Software Engineering Camareno UniversityItaly

The Internet of Things plays a predominant role in automating all real-time *** such application is the Internet of Vehicles which monitors the roadside traffic for automating traffic *** vehicles are connected to the internet through wireless communication technologies,the Internet of Vehicles network infrastructure is susceptible to flooding *** the network infrastructure is difficult as network customization is not *** Software Defined Network provide a flexible programming environment for network customization,detecting flooding attacks on the Internet of Vehicles is integrated on top of *** basic methodology used is crypto-fuzzy rules,in which cryptographic standard is incorporated in the traditional fuzzy *** this research work,an intelligent framework for secure transportation is proposed with the basic ideas of security attacks on the Internet of Vehicles integrated with software-defined *** intelligent framework is proposed to apply for the smart city *** proposed cognitive framework is integrated with traditional fuzzy,cryptofuzzy and Restricted Boltzmann Machine algorithm to detect malicious traffic flows in Software-Defined-Internet of *** is inferred from the result interpretations that an intelligent framework for secure transportation system achieves better attack detection accuracy with less delay and also prevents buffer overflow *** proposed intelligent framework for secure transportation system is not compared with existing methods;instead,it is tested with crypto and machine learning algorithms.

关键词： Internet of things smart cities software-defined network intelligent transportation system fuzzy inference system

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Development of gas tungsten arc welding using current pulsing technique to preclude chromium carbide precipitation in aerospace-grade alloy 80A

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International Journal of Minerals,Metallurgy and Materials 2019年第2期26卷 210-221页

作者： P.Subramani M.manikandan School of Mechanical Engineering Vellore Institute of Technology

Weldments were produced using gas tungsten arc welding(GTAW) and pulsed current gas tungsten arc welding(PCGTAW) techniques with ERNiCr-3 filler wire. Macro examination revealed that the resultant weldments were free from defects. A refined microstructure was observed in the weldment fabricated through PCGTAW. Scanning electron microscopy(SEM) analysis revealed secondary phases in the grain boundaries. Energy-dispersive X-ray spectroscopy(EDS) analysis revealed that microsegregation of Cr carbide precipitates was completely eradicated through PCGTAW. The microsegregation of Nb precipitates was observed in the GTA and PCGTA weldments. X-ray diffraction(XRD) analysis revealed the existence of M_(23)C?_6 Cr-rich carbide and Ni_8Nb phases in the GTA weldments. By contrast, in the PCGTA weldments, the Ni_8Nb phase was observed. The Cr_2Ti phase was observed in both the GTA and the PCGTA weldments. Tensile tests showed that the strength and ductility of the PCGTA weldments were slightly higher than those of the GTA weldments.

关键词： Ni-based superalloy welding pulse current microsegregation chromium carbide

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High-temperature synthesis and electronic bonding analysis of Ca-doped LaMnO_(3) rare-earth manganites

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Rare Metals 2022年第11期41卷 3932-3942页

作者： Natarajan Thenmozhi ramachandran Saravanan Post Graduate and Research Department of Physics Nadar Mahajana Sangam S.Vellaichamy Nadar CollegeNagamalaiMaduraiTamil Nadu625019India Research Centre and Post Graduate Department of Physics The Madura CollegeMaduraiTamil Nadu625011India

Doped lanthanum manganites La_(1-x)Ca_(x)MnO_(3) with five different concentrations of Ca(x=0.1,0.2,0.3,0.4 and 0.5) were synthesized by high-temperature solidstate reaction method and *** prepared samples were experimentally analyzed by X-ray diffraction(XRD),ultraviolet-visible spectroscopy(UV-Vis),scanning electron microscopy/energy dispersive spectroscopy(SEM/EDS) and vibrating sample magnetometer(VSM)*** structure is confirmed for this compound from powder X-ray diffraction *** XRD data confirm the shrinkage in the unit cell of synthesized samples for increasing calcium *** UV-Visible analysis for the estimation of optical band gap(E_(g)) reveals that the band gap decreases with the incorporation of *** synthesized samples were investigated for charge density distribution using maximum entropy method,utilizing the XRD data *** the charge density analysis,it is found that the bond lengths for La-O and Mn-O bonds decrease with the addition of *** ionic nature between La and O atoms and covalent nature between Mn and O atoms are enhanced for 40% of *** 50% of Ca-doped sample,ionic nature between La and O atoms and covalent nature between Mn and O atoms *** the prepared samples exhibit ferromagnetism at 20 K and paramagnetism at 300 K.

关键词： Manganites Mixed valency Magnetocaloric Magnetoresistive SOFC

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Charge distribution around Ba-O and Ti-O bonds in BaTi_(1-x)Zr_(x)O_(3)through powder X-ray diffraction

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Rare Metals 2021年第12期40卷 3660-3667页

作者： Jegannathan Mangaiyarkkarasi ramachandran Saravanan Post Graduate and Research Department of Physics Nadar Mahajana Sangam S.Vellaichamy Nadar CollegeNagamalaiMaduraiTamil Nadu 625019India Research Centre and Post Graduate Department of Physics The Madura CollegeMaduraiTamil Nadu 625011India

Ferroelectric lead-free BaTi_(1-x)Zr_(x)O_(3)ceramic powder samples with various compositions(x=0,0.04,0.06)have been synthesized by conventional high-temperature solid-state reaction method at 1450℃for 10 *** of Zr doping on the inter-atomic bonding and charge density distributions inside the lattice structure of BaTiO_(3)were analyzed through powder X-ray diffraction(XRD)and maximum entropy *** parameter and cell volume values are found to be increasing with the incorporation of Zr *** average grain sizes are found to be in the range of 23-28 *** entropy mapping of electron density analysis reveals the reduction in ionic nature along Ba-O bond and the enhancement of covalent nature along Ti-O *** band gap values were determined from ultraviolet-visible(UV-Vis)*** morphology and microstructures of the samples were analyzed from scanning electron microscopy(SEM)*** with irregular sizes were observed in all the prepared *** of the samples was further confirmed by energydispersive X-ray spectroscopy(EDAX).

关键词： Barium zirconium titanate Structure factors Electron density Rietveld analysis Maximum entropy method

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Cellular Automata Models of Traffic Behavior in Presence of Speed Breaking Structures

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Communications in Theoretical Physics 2009年第10期52卷 646-652页

作者： Parthasarathy ramachandran Indian Institute of Science

In this article, we study traffic flow in the presence of speed breaking structures. The speed breakers are typically used to reduce the local speed of vehicles near certain institutions such as schools and hospitals. Through a cellular automata model we study the impact of such structures on giobal traffic characteristics. The simulation results indicate that the presence of speed breakers could reduce the global flow under moderate global densities. However, under low and high global density traffic regime the presence of speed breakers does not have an impact on the global flow. Further the speed limit enforced by the speed breaker creates a phase distinction. For a given global density and slowdown probability, as the speed limit enforced by the speed breaker increases, the traffic moves from the reduced flow phase to maximum flow phase. This underlines the importance of proper design of these structures to avoid undesired flow restrictions.

关键词： cellular automata traffic flow model simulation speed breakers

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Mixed convection characteristics in lid-driven cavity containing heated triangular block

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Chinese Journal of Chemical Engineering 2017年第10期25卷 1381-1394页

作者： Krunal M.Gangawane B.manikandan Department of Chemical Engineering University of Petroleum and Energy Studies Dehradun 248007 Uttrakhand India

This research work numerically analyzes 2D,steady state,mixed convective heat transfer for Newtonian fluids in lid driven square enclosure with centered triangular block（blockage—10%or 30%）maintained either at the constant wall temperature or constant heat flux thermal *** fluid flow in the enclosure is initiated by top moving wall in＋x-direction,while all other walls are *** top and bottom walls are thermally *** particular,the governing field equations are solved for range of governing parameters such as,Reynolds number（1–1000）,Prandtl number（1–100）,and Grashof number

关键词： Mixed convection Lid-driven cavity Reynolds number Numerical study Grashof number

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An improved evaporation rate water cycle algorithm for energy-efficient routing protocol in WSNs

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International Journal of Intelligent Computing and Cybernetics 2023年第1期16卷 30-45页

作者： Vimala Dayalan manikandan Kuppusamy School of Computer Science and Engineering Vellore Institute of TechnologyVelloreIndia

Purpose-The paper aims to introduce an efficient routing algorithm for wireless sensor networks(WSNs).It proposes an improved evaporation rate water cycle(improved ER-WC)algorithm and outlining the systems performance in improving the energy efficiency of *** proposed technique mainly analyzes the clustering problem of WSNs when huge tasks are ***/methodology/approach-This proposed improved ER-WC algorithm is used for analyzing various factors such as network cluster-head(CH)energy,CH location and CH density in improved *** proposed study will solve the energy efficiency and improve network throughput in ***-This proposed work provides optimal clustering method for Fuzzy C-means(FCM)where efficiency is improved in *** evaluations are conducted to find network lifespan,network throughput,total network residual energy and network *** limitations/implications-The proposed improved ER-WC algorithm has some implications when different energy levels of node are used in *** implications-This research work analyzes the nodes’energy and throughput by selecting correct CHs in intra-cluster *** can possibly analyze the factors such as CH location,network CH energy and CH ***/value-This proposed research work proves to be performing better for improving the network throughput and increases energy efficiency for WSNs.

关键词： WSNs Improved ER-WCA Energy efficiency Routing protocol PCM Fuzzy C-Means Paper type Research paper

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The partial side information problem with additional reconstructions

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Digital Communications and Networks 2020年第1期6卷 123-128页

作者： Viswanathan ramachandran Department of Electrical Engineering Indian Institute of Technology BombayIIT AreaPowaiMumbai400076India

We consider a quadratic Gaussian distributed lossy source coding setup with an additional constraint of identical reconstructions between the encoder and the *** setup consists of two correlated Gaussian sources,wherein one of them has to be reconstructed to be within some distortion constraint and match with a corresponding reconstruction at the encoder,while the other source acts as coded side *** study the tradeoff between the rates of two encoders for a given distortion constraint on the *** explicit characterization of this trade-off is the main result of the *** also give close inner and outer bounds for the discrete memoryless version of the problem.

关键词： Rate-distortion theory Source coding Network information theory Wyner Ziv compression MMSE estimation Correlated Gaussian sources

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Stability Analysis of Cyber-Physical Micro Grid Load Frequency Control System with Time-Varying Delay and Non-Linear Load Perturbations

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Computer Modeling in Engineering & Sciences 2019年第12期121卷 801-813页

作者： D.Vijeswaran V.manikandan Department of Electrical and Electronics Engineering Coimbatore Institute of TechnologyCoimbatore 641014India 不详

In a cyber-physical micro-grid system,wherein the control functions are executed through open communication channel,stability is an important issue owing to the factors related to the time-delay encountered in the data *** of feedback variable as discrete data packets in communication network invariably introduces inevitable time-delays in closed loop control *** delay,depending upon the network traffic condition,inherits a time-varying characteristic;nevertheless,it adversely impacts the system performance and *** load perturbations in a micro-grid system are considerably influenced by the presence of fluctuating power generators like wind and solar *** these non-conventional energy sources are integrated into the power grid through power electronic interface circuits that usually works at high switching frequency,noise signals are introduced into the micro-grid system and these signals gets super-imposed to the load *** on this back ground,in this paper,the delay-dependent stability issue of networked micro-grid system combined with time-varying feedback loop delay and uncertain load perturbations is investigated,and a deeper insight has been presented to infer the impact of time-delay on the variations in the system *** classical Lyapunov-Krasovskii method is employed to address the problem,and using a standard benchmark micro-grid system,and the proposed stability criterion is validated.

关键词： Delay-dependent stability time-varying delay open communication network nonlinear perturbations Lyapunov-Krasovskii functional linear Matrix Inequality(LMI)

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