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Stock market prediction is a challenging task, for inadequate information and myriad uncertainties. However, the psychological expectation of traders is rare to change. As a result, history tends to repeat itself. In this paper, we design and implement a stock prediction system using empirical sequences analysis. The system predicts the trend of a target stock by finding out and evaluating the trends...
Verifiable random number requires that the number is not only random but also its randomness can be verified. It has many applications in cryptographic protocols, such as key management, digital signature and authentication. In 2010, Liu et al. have introduced an efficient scheme to generate verifiable random numbers using polynomial interpolation. This scheme has inspired several other works recently...
Solid-State Drive, popularly known as SSD is now widely used in computer system and industry. This is a new type of memory which is smaller and lighter as compared to HDD. During a “clean” shutdown, most host systems, initiate a command (the STANDBY IMMEDIATE command) to an SSD to give the SSD enough time to prepare for the shutdown. This allows the SSD to save data currently in transition (in temporary...
Based on Diffie-Hellman key exchange protocol, an improved remote authentication protocol for value-added services in mobile networks is proposed, with the help of smart card and client account index. The improved scheme which inherits client anonymity and non-repudiation from previous identity-based remote authentication schemes is more efficient without trusted third party and bilinear pairing.
The previous conference schemes for mobile communications focus on establishment, distributing and updating of shared key for conferees, which cannot prevent conferees from submitting fraud message or invalid message. The improvement scheme based on verifiable random number which is constructed with interpolating polynomial reduces the probability of rubbish information in the mobile conference greatly.
Selfish behaviors significantly affect the overall performance of mobile ad hoc networks (MANETs). Reputation systems have been proved to be an efficient way to block such behaviors in MANETs. Several reputation models based on subjective logic have been proposed to improve the reputation mechanism, in which an uncertainty value is introduced for reputation computation when the local information is...
Due to lack of effective trust management mechanism, there are a lot of deceptive behaviors in P2P networks, which seriously decrease the quality of network services. In order to improve the quality of services (or transactions), this paper proposes a novel trust and reputation model based on similarity evaluation in P2P environments. According to the different context of services, the model gives...
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