Developing a Software Agent for Establishing a Convenient Customer-Driven Group-Buying Mechanism

2009 ◽  
pp. 105-116
Author(s):  
Toly Chen ◽  
Yi-Chi Wang ◽  
Horng-Ren Tsai ◽  
Yu-Cheng Lin
Keyword(s):  
Target Item ◽  
Experimental System ◽  
Software Agent ◽  
Multiple Target ◽  
Web Page ◽  
Traditional Group ◽  
Group Buying ◽  
Whole Process ◽  
Multiple Group ◽  
Registered User

Group-buying (or volume discount) is a promising field in electronic commerce for applying software agent technologies. In a traditional group-buying mechanism, either a customer or the supplier calls up a sufficient number of buyers for a target item, and then coordinates the actions of all participants during the whole process. Most participants involved in a group-buying project are passive. Studies in this field were therefore focused on developing an effective mechanism so as to enhance the utility of every participant in a fair way. However, the utility of a customer can only be maximized if the customer can buy the item he/she personally needs at a possibly lowest price, not just an item recommended by another customer or the supplier that he/she is supposed to like. In other words, it would be more flexible if every customer can initiate a group-buying project of his/her own for the item he/she personally needs in a convenient way. As a result, there will be multiple group-buying projects for multiple target items at the same time. To this end, a software agent is developed in this study to make every customer easily reach the web page he/she browses for a target item for group-buying. The data of the item will be automatically extracted and uploaded onto a website which then informs every registered user of the group-buying project of this item. Requests for the same item will be combined, and there are always multiple target items on the website for group-buying at the same time. As a result, cross group-buying becomes possible. An experimental system is constructed in this study to demonstrate the applicability of the software agent. Its advantages and/or disadvantages are also discussed.

scholarly journals 3D Reconstruction of Images Based on Embedded Processors

2019 ◽  
Vol 267 ◽  
pp. 02016
Author(s):  
Jundi Wang ◽  
Chixin Li ◽  
Yaling Zhu ◽  
Juan Wang
Keyword(s):  
Image Reconstruction ◽  
Embedded System ◽  
Personal Computer ◽  
Small Volume ◽  
Good Prospect ◽  
3D Image ◽  
Web Page ◽  
Whole Process ◽  
3D Image Reconstruction ◽  
Marching Cubes Algorithm

3D image reconstruction has very important value in reality. In this paper, based on embedded system, we use Marching Cubes algorithm to realize 3D image reconstruction and furthermore, display the result in web page. By introducing principle and whole process of reconstruction, we can prove that comparing with personal computer, this method has advantage of lower price, small volume, and has good prospect in future.

Using the beta distribution technique to detect attacked items from collaborative filtering

2021 ◽  
Vol 25 (1) ◽  
pp. 121-137
Author(s):  
Ping-Yu Hsu ◽  
Jui-Yi Chung ◽  
Yu-Chin Liu
Keyword(s):  
Collaborative Filtering ◽  
Beta Distribution ◽  
Detection Rate ◽  
Recommendation System ◽  
Target Item ◽  
Multiple Target ◽  
The Past ◽  
User Data

A recommendation system is based on the user and the items, providing appropriate items to the user and effectively helping the user to find items that may be of interest. The most commonly used recommendation method is collaborative filtering. However, in this case, the recommendation system will be injected with false data to create false ratings to push or nuke specific items. This will affect the user’s trust in the recommendation system. After all, it is important that the recommendation system provides a trusted recommendation item. Therefore, there are many algorithms for detecting attacks. In this article, it proposes a method to detect attacks based on the beta distribution. Different researchers in the past assumed that the attacker only attacked one target item in the user data. This research simulated an attacker attacking multiple target items in the experiment. The result showed a detection rate of more than 80%, and the false rate was within 16%.

An Adapted Measure of Teacher Self-Efficacy for Preservice Teachers: Exploring its Validity Across two Countries

2014 ◽  
Vol 28 (3) ◽  
pp. 83-92 ◽  
Author(s):  
Franziska Pfitzner-Eden ◽  
Felicitas Thiel ◽  
Jenny Horsley
Keyword(s):  
Preservice Teachers ◽  
Self Efficacy ◽  
Confirmatory Factor Analyses ◽  
3 Dimensional ◽  
Multiple Group ◽  
Three Samples ◽  
Confirmatory Factor ◽  
Teacher Self Efficacy ◽  
Dimensional Assessment ◽  
Metric Measurement

Teacher self-efficacy (TSE) is an important construct in the prediction of positive student and teacher outcomes. However, problems with its measurement have persisted, often through confounding TSE with other constructs. This research introduces an adapted TSE instrument for preservice teachers, which is closely aligned with self-efficacy experts' recommendations for measuring self-efficacy, and based on a widely used measure of TSE. We provide first evidence of construct validity for this instrument. Participants were 851 preservice teachers in three samples from Germany and New Zealand. Results of the multiple-group confirmatory factor analyses showed a uniform 3-factor solution for all samples, metric measurement invariance, and a consistent and moderate correlation between TSE and a measure of general self-efficacy across all samples. Despite limitations to this study, there is some first evidence that this measure allows for a valid 3-dimensional assessment of TSE in preservice teachers.

Detecting Random Responses in a Personality Scale Using IRT-Based Person-Fit Indices

2019 ◽  
Vol 35 (1) ◽  
pp. 126-136 ◽  
Author(s):  
Tour Liu ◽  
Tian Lan ◽  
Tao Xin
Keyword(s):  
Experimental System ◽  
Real Data ◽  
Fit Indices ◽  
Random Response ◽  
Person Fit ◽  
Index Method ◽  
Single Person ◽  
Person Fit Index ◽  
Random Responses ◽  
Response Behaviors

Abstract. Random response is a very common aberrant response behavior in personality tests and may negatively affect the reliability, validity, or other analytical aspects of psychological assessment. Typically, researchers use a single person-fit index to identify random responses. This study recommends a three-step person-fit analysis procedure. Unlike the typical single person-fit methods, the three-step procedure identifies both global misfit and local misfit individuals using different person-fit indices. This procedure was able to identify more local misfit individuals than single-index method, and a graphical method was used to visualize those particular items in which random response behaviors appear. This method may be useful to researchers in that it will provide them with more information about response behaviors, allowing better evaluation of scale administration and development of more plausible explanations. Real data were used in this study instead of simulation data. In order to create real random responses, an experimental test administration was designed. Four different random response samples were produced using this experimental system.

An Alternative Method for Identifying a Failed Engine in Twin-Engine Propeller Aircraft

2020 ◽  
Vol 10 (2) ◽  
pp. 103-111
Author(s):  
Andrey K. Babin ◽  
Andrew R. Dattel ◽  
Margaret F. Klemm
Keyword(s):  
Human Error ◽  
Flight Simulator ◽  
Traditional Group ◽  
Aircraft Accidents ◽  
Alternative Method ◽  
Indicator Group ◽  
Group A ◽  
The Dead ◽  
Engine Failure ◽  
And Performance

Abstract. Twin-engine propeller aircraft accidents occur due to mechanical reasons as well as human error, such as misidentifying a failed engine. This paper proposes a visual indicator as an alternative method to the dead leg–dead engine procedure to identify a failed engine. In total, 50 pilots without a multi-engine rating were randomly assigned to a traditional (dead leg–dead engine) or an alternative (visual indicator) group. Participants performed three takeoffs in a flight simulator with a simulated engine failure after rotation. Participants in the alternative group identified the failed engine faster than the traditional group. A visual indicator may improve pilot accuracy and performance during engine-out emergencies and is recommended as a possible alternative for twin-engine propeller aircraft.

The design and presentation order of Web page buttons

2005 ◽  
Author(s):  
Aaron W. Bangor ◽  
James T. Miller
Keyword(s):  
Presentation Order ◽  
Web Page

Signal transduction therapy of colon tumors with multiple target kinase inhibitors

2009 ◽  
Vol 47 (05) ◽  
Author(s):  
G Kéri ◽  
L Őrfi ◽  
Z Greff ◽  
Z Varga ◽  
B Szokol ◽  
...  
Keyword(s):  
Signal Transduction ◽  
Kinase Inhibitors ◽  
Multiple Target ◽  
Colon Tumors ◽  
Signal Transduction Therapy

Antifibrinolytic Action of the Anticoagulant Split Product of Fibrinogen

1968 ◽  
Vol 19 (03/04) ◽  
pp. 526-532 ◽  
Author(s):  
L. B Nanninga ◽  
M. M Guest
Keyword(s):  
Experimental System ◽  
New Method ◽  
System A ◽  
Fibrinogenolytic Activity

SummaryThe purified anticoagulant split product of fibrinogen has antifibrinolytic and anti-fibrinogenolytic activity. This was investigated by lysis times of fibrin and by the rate of disappearance of fibrinogen in plasma and in a purified system. A new method was used to measure fibrinogenolytic activity. In the experimental system which we have used no indication of additional breakdown of the anticoagulant split product in the presence of fibrinolysin was obtained.

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