构建印度直观虚拟电子商务购物网站模板(IJITCS-V10-N2-5)

构建印度直观虚拟电子商务购物网站模板(IJITCS-V10-N2-5)
构建印度直观虚拟电子商务购物网站模板(IJITCS-V10-N2-5)

I.J. Information Technology and Computer Science, 2018, 2, 45-59

Published Online February 2018 in MECS (https://www.360docs.net/doc/388713794.html,/)

DOI: 10.5815/ijitcs.2018.02.05

Building a Template for Intuitive Virtual

E-Commerce Shopping Site in India

Megharani T. Patil

Thadomal Shahani Engineering College/ Information Technology Department, Mumbai, 40050, India

E-mail: megharanitpatil@https://www.360docs.net/doc/388713794.html,

Dr. Madhuri Y. Rao

Thadomal Shahani Engineering College/ Information Technology Department, Mumbai, 40050, India

E-mail: my_rao@https://www.360docs.net/doc/388713794.html,

Received: 25 October 2017; Accepted: 17 November 2017; Published: 08 February 2018

Abstract—With the aim to take forward the digital India mission, it is essential to building a template for intuitive e-commerce shopping site so that users can shop easily, without taking any special training. We have achieved this using several steps. First, we have documented mental model and behavioral patterns of end users while they were interacting with the shopping site. We have mapped existing shopping sites with the mental model, behavioral pattern and as a result, problem themes are identified. Effective procedures are identified to make GUI for the e-commerce shopping sites more intuitive. Based on these procedures, the prototype is designed and validated. Finally, the template for intuitive e-commerce shopping site is formed.

Index Terms—Behavioral pattern, Intuitive, Mental Model, Procedures, Prototype, Template, Virtual e-commerce shopping site.

I.I NTRODUCTION

According to the existing recent survey, computer literacy in India is just 6.5%. We still have less than 10% Internet acceptance. 70% of the country’s population lives in rural areas. So, there is a need to design intuitive E-commerce shopping site which will understand user’s mental model and make online shopping effortless. The design of e-commerce websites must be user-centric. If a site is difficult to understand, potential customers visit the website and leaves. To maximize the sales from online trades, companies must have simple and user-friendly e-commerce websites, which gives customers a good product perception, real and convenient shopping experience along with good customer service [1]. With the aim to take forward the digital India mission, it is essential to building the template for intuitive virtual e-commerce shopping websites so that users can do shopping easily, without any need for special training. The design of e-commerce website must be user-centric. If the design of the e-commerce website the is stay, and shop at the website conveniently, hence it is necessary to design the intuitive graphical user interface. To maximize revenue from online trade, companies must have a usable e-commerce website, which gives customers a good product perception, real and convenient shopping experience and good customer service. The intuitive design of GUI provides high conversion rate in e-commerce which increases sales, decreases user errors and customer support costs, reduces the cost of providing training, and finally increases user productivity. The ease with which any user can learn to operate, prepare inputs for, and interpret outputs of a system is a measure of the intuitive graphical user interface. It is only possible by collecting customer requirements and analyzing user experiences through an interview, a survey and benchmarking to form decent procedures that will deliver the intuitive design of GUI for e-commerce websites very efficiently. Key area required for it is human-computer interaction. Human-computer interaction researches the design and the use of computer technology for the interface between users and computers. HCI is situated at the intersection of design and behavior science. Design for HCI means ensuring system functionality and usability, providing effective user interaction support and enhancing a pleasant user experience through elicit feedback from users about their experiences with prototyped designs. Refine the design, based on the suggested changes. Repeat this iterative design procedure until the sensible, user-friendly interface is created [2]. Behavioural science is the systematic analysis and investigation of human behavior through controlled and naturalistic observation and disciplined scientific experimentation.

In academia, there is a persistent focus towards the cause of nation-building and realize that this is an opportune time to reduce the gap between emerging economies and developed economy. There is a serious gap between what is getting practiced in e-commerce and what is ideally possible. The demand for intuitively usable interactive e-commerce applications is increasing day by day. Thus, it is essential to reduce the time

usability for heterogeneous user groups. There is a need for understanding behavior study to make end user’s life easy. A technical system is intuitively usable if the users’ unconscious application of prior knowledge leads to effective interaction. This suggests that user interfaces should achieve a match between the user interface and the mental model of the user. There is a need to translate the mental models of the user into decent design guidelines so the user can easily access the e-commerce website with the high conversion rate to increase its competitiveness.

II.R ELATED W ORK

The demand for intuitively usable interactive e-commerce applications is increasing exponentially, to reduce the time required for learning how to use a system and to increase usability for heterogeneous user groups. There is a need for behavior study to make end user’s life easier. A technical system is intuitively usable if the users’ unconscious application of prior knowledge leads to effective interaction [3]. A cognitive computing solution for the design of e-commerce portal can be in terms of automation or augmentation. Automation of routine tasks can improve the overall performance of portal [4]. Mental models give us a deep understanding of user’s motivations and thought processes along with the emotional and philosophical landscape in which they are operating. Mental models guide the design of the solution and help to make good user and business decisions by focusing towards the solution on what users actually need based on the feedback they have already given. A mental model is an affinity diagram of behaviors made from ethnographic data gathered from audience representatives. Once mental models are formed, one can use them to understand how current website supports people. Moreover, for task-based testing, people who do similar things are observed and their behavioral patterns are noted. Ultimately, we will get a website that understands and addresses their users [5].To satisfy customer needs, it is necessary to stay alert with the current technology and try to keep pace with it. Users find difficulties in using the facility when searching e-commerce sites, for example, users often do not know where to find the information, or how to specify a request although they have targets in their minds for most of the times. Currently, the user interface is usually designed based on the functionality without the cognitive touch on it. There is a lack of website design with the cognitive approach [6]. While designing an e-commerce website one should take care of aesthetics of the website, it’s layout with readable and appealing visual aspects along with proper colors and typography [7]. If the site is well designed then, it is easy for a user to go down from general topics to specific content and to jump between related concepts via hyperlinks. Good navigation is fundamental to good web design in both business and informational sites users should be able to find [8]. Usability of the system may enhance by adding intuitive security mechanism. Security in systems is an assurance to the user, gives them a right to a system’s access to information by putting up authentication and control mechanisms making sure the users of these systems are the only ones that have been granted acceptable rights [9].Requirement Engineering and User Experience Design together make available the comprehended user requirements to product development team for successful implementation of usable product in all aspect [10]. Consider user experience and ease of access to accommodate as many users as possible regardless of user skills. User experience, i.e. how well a user understands, how he or she can interact on a site is related to layout, clear instructions and labeling on a website, i.e. how the interactive design of the site is made [11]. Effective Design of intuitive graphical user interfaces is possible with the help of solid design guidelines or procedures. Design guidelines, such as gestalt principles are available today that support designers in achieving usable user interfaces intuitively. On the other hand, these guidelines have disadvantages like being only suitable for specific user groups and offering only general advice for the design of user interfaces [12]. There are seven principles of user interface design considered during designing the case for HCI Design pattern. These design principles are tolerance, simplicity, visibility, affordance, consistency, structure and feedback [13]. Furthermore, thirteen principles of human perception and information processing can be utilized to create an effective display design which achieves a reduction in errors, a reduction in required training time, an increase in efficiency, and an increase in user satisfaction [14]. There are 10 principles for interaction design which are called as heuristics because they are broad rules of thumb and not specific usability guidelines [15]. Donald Norman introduced several basic user interface design principles and concepts that are considered for understanding why some designs are more usable and learnable than others [16]. There are certain universal golden rules for user interface design. The golden rules are divided into three groups: Place the users in control, reduce users’ memory load, m ake the interface consistent [17]. Shneiderman’s eight golden rules provide a convenient summary of the key principles of interface design. They are intended to be used during design but can also be applied to the evaluation of systems [18]. When the user interacts with the website to perform a task, he or she is involved in a cognitive activity, sustaining a cognitive cost to search, interpret and process information, and experiencing a sense of satisfaction. The degree of ambiguity and uncertainty he or she perceives and the needed search time determines the effort and the cognitive cost he or she has to sustain to perform his/her task [19].

This research work will focus on the intuitive design of user interface for Indian e-commerce website in order to increase on-site conversion rate. This research work is carried out in following flow:

1. Documenting end user’s mental model and behavioral pattern while interacting with e-commerce sites.

2. The mapping between GUI of existing shopping site with mental model and behavioral pattern of the end user.

3. Investigating procedures to make GUI for e-commerce shopping site more intuitive.

4. Validating prototype GUI for a virtual e-commerce project in India.

5. Creating a template to make e-commerce website more intuitive.

III.C OGNITIVE C OMPUTING F RAMEWORK

To carry out this work, a cognitive computing solution for the design of e-commerce portal is stated in terms of automation or augmentation models. Automation of routine tasks can improve the overall performance of portal. Automated systems can make selling process of product quick, accurate and consistent. Many other activities such as attracting the customers to buy a product do not lend to automation, so it is better to think in terms of augmentation [20]. The framework that results in work complexity and data complexity may consider four primary types of activity models named as Efficiency model, Expert model, Effectiveness model and Innovation model as shown in Table 1.

Using this framework, unstructured, volatile, and high-volume product-related data can be converted into structured, stable, low-volume so the customer can easily understand product specifications. As well as AD-HOC, unpredictable, judgment-based and all other tasks related to online shopping can be converted into routine, predictable, and rules-based activities. This work is based on the effective model, innovation model, and efficiency model. We have kept the implementation of an expert model for the future scope.

Table 1. Cognitive Computing Framework for design of e-commerce portal

IV.D OCUMENTING E ND U SER’S M ENTEL M ODEL(UMM) In order to improve website structure, navigation and interaction we have considered usability factors, viz. simplicity, readability, learnability, navigability, interactivity, supportability and acceptability. In user-based testing, we have conducted a survey of 405 participants by setting 27 questionnaires based on the above seven factors. Value of Cronbach alpha was 0.85 which is greater than 0.7 indicating survey data is reliable. Among them 318 responses were positive responses, rest were negative responses [21]. List of questionnaires is given in Table 2.

Participants’ Demographic data were analyzed and they are categorized into three groups, viz. beginners, intermediates and experts and found 66 beginners, 179 intermediates, and 73 experts. This categorization is done based on their frequency of using computer and internet. Analysis of user’s demographic characteristics is given in Table 3.

Survey responses are analyzed using Likert score statistical analysis using real statistics tool with statistical measures Mean (M), Standard Deviation (S.D). Average Likert score Mean for beginners near 2, intermediates near 3 and experts near 4. These values mean that beginners have poor satisfaction, intermediates have the average satisfaction and experts have better satisfaction than beginners and intermediates. Likert score statistical analysis in terms of mean, standard deviation and variance is given in Table 10(Appendix).

Hypothesis testing T-test is applied on the Likert score of sample responses between different groups’ beginners and intermediates, intermediates and experts, beginners and experts by stating null hypothesis (H0) and the alternative hypothesis (H1).

Null hypothesis (H0):

T here is no significant difference between beginner’s (beginners), intermediates and experts.

Alternative hypothesis (H1):

There is a significant difference between various user groups.

Table 4 shows the value of P is <0.05. It is concluded that null hypothesis (H0) is false. Alternative hypothesis become true i.e. there is a significant difference between various user groups.

Table 2. Questionnaires

Table 3. Analysis of user’s demographic characteristics

Table 4.T-test Results

A separate mental model for each of the user types is created from Likert score analysis and compared to see similarities and differences among the mental spaces of user segments which bring clarity to design. We can use a mental model to understand how current website supports people and what the problem themes are. The mental model for beginner, intermediate and expert (Summarized ) are as shown in Table 6, Table 7 and Table 5. Detailed mental models are shown in Table 12, Table 13 and Table 14 (Appendix).

Table 5. Mental Model for Experts (Summarized)

Table 6. Mental Model for Beginner (Summarized)

Table 7. Mental Model for Intermediates (Summarized) V. D OCUMENTING E ND U SER ’S B EHAVIORAL P ATTERN

(UBP) Behavioral patterns are documented through task-based testing. 90 users performed 10 tasks. Their performance is noted in detail for each task which is shown in Table 15(Appendix). Usability testing is done through task analysis using intuitive metrics such as task success rate, relative efficiency and satisfaction level. Equation (1) and (2) are equations for task success rate, relative efficiency. ______*100%____Number of tasks completed sucessfully

Task Sucess Rate Total number of tasks undertaken

=

(1)

1111

Re _*100%R N

ij ij

j i R

N

ij

j i n t

lative Efficiency t

=

====

∑∑∑∑ (2)

R: Number of users N: Numer of tasks

n: Flag for successful completion of the task t: Time required to complete the task

Satisfaction level was calculated by conducting a post-task survey on the Likert scale by taking the mean of all responses. Post Task Questionnaires are listed as follows: Post Task Questionnaires :

Q.1 I satisfied with the ease of completing the tasks. Q.2 I satisfied with the amount of time it took to complete the tasks.

Q.3 I satisfied with the support information (On-line help, messages, and documentation) when completing the tasks.

Q.4 I found the task was easy.

Q.5 I required fewer efforts to complete the task. Q.6 I felt successful in accomplishing the task.

Q.7 I felt insecure, discouraged, irritated and annoyed while doing the task.

The result of task analysis by intuitive matrices for usability testing is illustrated in Table 8, Fig.1, and Fig. 2.

Table 8. Results of task analysis by intuitive matrices for usability testing

Fig.1. Graph for task analysis in terms of Task success rate & relative

efficiency (Existing Websites)

Fig.2. Graph for task analysis in terms of satisfaction level

(Existing Websites)

Almost for all tasks, beginners gave up, experts performed well and intermediates were confused while performing tasks.

VI.M APPING E XISTING GUI WITH UMM AND UBP Mapping of GUI with mental model and behavioral pattern of the end users is done. Gap identified in GUI of existing e-commerce shopping site are in Table 16(Appendix).

VII.P ROCEDURES TO M AKE GUI I NTUITIVE Procedures are mainly related to the website structure, the website navigation, the website interaction and their evaluation factor. The procedures to make GUI intuitive are

(i) Simplicity: Keep registration, login and whole purchase process simple so that it will be easy for the end user to understand all aspects of the website.

(ii) Readability: Website should avoid information overhead and vertical scrolling. Also, contents should be logically framed so that the user can easily read through the website.

(iii) Learnability: Website texts, contents, and information should be clear so that users can easily understand the website and decide what can be done further.

(iv) Navigability: Website should facilitate easy and rememberable movement from one web page to another web page with multiple simple and optimal paths. The home page of the website should be easily accessible from any interior pages.

(v) Interactivity: Website should provide standard symbols to clarify texts and provide interactive features and communication to enhance interactivity. Also, it should provide user orientation when they shop.

(vi) Supportability: Website should provide support to ask for help or information any time needed, clear feedback to the user action, content customization. Also, it should provide a feature for narrowing the available product list and appropriate learning about products. (vii) Acceptability: It refers provision to avoid error, if an error occurs, there should be a clear and helpful error message. Also, it should help to recover from error to get acceptability from users.

VIII.B UILDING P ROTOTYPE FOR E-COMMERCE W EBSITE Prototyping is done with help of MockPlus prototyping tool. All pages have been designed without vertical and horizontal scrolling. More numbers of metaphors have been used to simplify website texts. Homepage design is shown in Fig. 3.

Fig.3. Home Page

Need-based filters have been introduced to personalize or customize catalog which is shown in Fig. 4. Beginners and intermediates find it difficult for attribute-based filters.

Fig.4. catalog page

To learn product in one view, tabbed windows have been used as shown in Fig. 5. In the tabbed window basic features, detailed description with videos, offers, reviews, ratings, sellers, services and all product learning related things are represented in one view so that product learning becomes easy for users.

Fig.5. Product Page

Fig.6. Cart Design

In the shopping cart, edit cart option is highlighted which is shown in Fig. 6.

Users find it difficult to form a password and remember the password later so verification code based login and registration page has designed as shown in Fig.

7.

Fig.7. Login & Registration

On the checkout page, address edit option has been provided as well as the tabbed window has been used for different payment options as shown in Fig. 8.

Fig.8. Checkout Process

Order acknowledgment page is kept simple with detailed order acknowledgment as well as edit options are kept for delivery address and payment method which is shown in Fig. 9.

Fig.9. Order Acknowledgement

IX.V ALIDATING P ROTOTYPE OF E-COMMERCE W EBSITE The prototype is validated through the test by focus groups, heuristic evaluation, guideline review through the cognitive walkthrough and usability test using think-aloud evaluations [34].

?Focus groups validation

We have invited 35 expert users for this validation. They have suggested adding effective quick shopping feature for increasing conversion rate of the shopping site. ?Heuristic evaluation They have suggested taking care of aesthetics, typography, the positioning of various web components, and uniform size for metaphors to enhance user experience.

?Guideline review through cognitive walkthrough This is carried out by a team of 20 web developers. Their suggestion is with regards to accommodate interactivity features such as pop-up windows or interactive video links, to add supportability features such as clear feedback to user action and acceptability feature such as a provision to avoid error, clear and useful error messages, recover from error etc.

?Usability test using think-aloud evaluations

This is done by a group of 35 beginner users who have tried to go through the purchase process. There should be the real feel of shopping with sufficient learning about the products in more visualize form.

X.D EVELOPING T EMPLATE FOR V IRTUAL E-COMMERCE

W EBSITE

The template is developed with the help of PHP and MySQL. All the pages have been designed without vertical and horizontal scrolling, appropriate texts, number of standard symbols, accessible home page and essential processes are highlighted. The homepage is shown in Fig. 10. In home page features like shopping tour, shopping assistant, clear page, clear and easy to find contact information, a popup window to motivate user for writing reviews and reachable true navigation such as manage my orders are added. Manage my orders page with the track, cancel, return, cancel the order and write review option is shown in Fig. 11.Shopping assistant gave a real feel of shopping. Also, reduces the number of clicks.

Fig.10. Home Page

Fig.11. Manage my order page

Fig.12. Product catalogue

Product catalog page is shown in Fig. 12. Features like a need-based filter, last updated date are added. In the need-based filter, two categories are added, simple phone and smartphone.

Fig.13. Product Page with clear feedback

Fig.14. Product Page with clear error message

On product page, shown in Fig.13. and Fig. 14. page link to https://www.360docs.net/doc/388713794.html, is given, if anyone is unaware of the pin, to go back navigation from product page to catalogue page, direct facility to get call from online company, video link for how to use the product, clear error messages and clear feedback for user actions are added. Nav tab frame is used to avoid vertical scrolling and to enhance product learning.

Fig.15. Cart

In cart page, as shown in Fig. 15 feature like text boxes with instructions to avoid errors, a separate column for edit cart option, true navigation are added.

Verification code based simple login & registration process, Text boxes will give proper instructions written in a placeholder to avoid error during login and registration page which is shown in Fig. 16.

Fig.17. Payment page

Nav tab frame is used to avoid confusion while selecting appropriate payment option as shown in Fig. 17.

Fig.18. Order Acknowledgement

Table 9. Results of task analysis through intuitive metrics for usability

testing (Virtual Website)

Fig.19. Graph for task analysis in terms of Task success rate & relative

efficiency (Virtual Website)

Fig.20. Graph for task analysis in terms of satisfaction level

(Existing Websites)

Finally, virtual e-commerce template is tested through a survey based and task-based usability testing. The virtual e-commerce site is published. The google form link which was used for existing site’s usability testing is also shared among end users for a virtual e-commerce website. 256 end users filled the survey link. Among them 212 responses were positive. Value of Cronbach alpha is 0.87 i.e greater than 7 indicating survey data is reliable. Participants’ Demographic data were analyzed and categorized into three groups, viz. beginners, intermediates and experts and it were found that there are 40 beginners, 104 intermediates, and 68 experts. This categorization is done based on their frequency of using computer and internet. Survey responses are analyzed using Likert score statistical analysis using real statistics tool with statistical measures viz. mean (M), standard deviation (S.D), Cronbach alpha (C.A). Average of Likert score Mean for beginners near 4, intermediates near 4 and experts near 5. These values means, all type of personas have above average level of satisfaction. Likert score statistical analysis is in terms of mean, standard deviation and variance and is given in Table 11(Appendix). In task-based usability testing, 90 users performed 10 tasks. Their performance is noted in detail for each task which is in Table 15(Appendix). Usability testing is done through task analysis using intuitive metrics such as task success rate, relative efficiency and satisfaction level.The result of task analysis by intuitive matrices for usability testing is illustrated in Table 9, Fig.19, and Fig. 20.

All type of personas performed tasks with at least 70% task success rate. Also, they achieved satisfaction level near 4.

XI.C ONCLUSION AND F UTURE W ORK

In this paper, we extended our research which is focused towards digital India. Here, we have carried out stepwise template development for an e-commerce website. We started with documenting mental model and behavioral pattern of users that assisted us to figure out the gaps between their current knowledge and target knowledge. Based on this understanding, design procedures are formed and eventually, those are reflected in a prototype of e-commerce shopping site. The prototype is validated with standard methods. Finally, the template is formed. Implementation of expert model i.e application of artificial intelligence and machine learning is kept for future work.

A PPENDIX

Table 10. Likert Score statistical analysis for existing websites

Table 11. Likert Score statistical analysis for virtual e-commerce shopping site

Table 12. Mental Model for Beginner (Detailed)

Table 13. Mental Model for Intermediates (Detailed)

Table 14. Mental Model for experts (Detailed)

Table 15. Behavioral pattern of end users while accessing website (Existing website and Virtual Website)

Table 16. Gap identified and required feature added

A CKNOWLEDGMENT

My special thanks to the research head Dr. G.T Thampi who have contributed towards the development of the paper.

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Authors’ Profiles

Megharani Patil has graduated from

Mumbai University, in Computer

Engineering in 2003. She completed her

Master's Degree from Shivaji University in

Academic Year 2010-11. She is pursuing

Ph.D. from Mumbai University. Currently,

she is working as an Assistant Professor at Thakur College of Engineering and Technology, Mumbai University. She has 13 years of teaching experience in the Institute. She has published more than 25 papers in international journals and conferences. She has also published C++ and Java programming language books. Her area of interest is software engineering, user experience design, and artificial intelligence. Her interests also include web application development and mobile application development. She is a lifetime member of ISTE professional body.

Dr. Madhuri Rao has Masters and a Ph.D.

degree in computer engineering from

Mumbai University. Currently, She is

working as a Professor & HOD in

Information Technology department at

more than 30 papers in international journals and conferences. Her area of interest is software engineering and data mining. She is also a research guide at Mumbai University.

How to cite this paper: Megharani T. Patil, Madhuri Y. Rao, "Building a Template for Intuitive Virtual E-Commerce Shopping Site in India", International Journal of Information Technology and Computer Science(IJITCS), Vol.10, No.2, pp.45-59, 2018. DOI: 10.5815/ijitcs.2018.02.05

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