INTAN NADIRAH BINTI AHMAD · 2019. 5. 7. · berikut adalah pengguna dapat memilih apa jawapan yang...

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FURNITURE ONLINE ORDERING USING CHATBOT INTAN NADIRAH BINTI AHMAD BACHELOR OF COMPUTER SCIENCE (SOFTWARE DEVELOPMENT) WITH HONOURS UNIVERSITI SULTAN ZAINAL ABIDIN 2019

Transcript of INTAN NADIRAH BINTI AHMAD · 2019. 5. 7. · berikut adalah pengguna dapat memilih apa jawapan yang...

  • FURNITURE ONLINE ORDERING USING CHATBOT

    INTAN NADIRAH BINTI AHMAD

    BACHELOR OF COMPUTER SCIENCE

    (SOFTWARE DEVELOPMENT) WITH HONOURS

    UNIVERSITI SULTAN ZAINAL ABIDIN

    2019

  • FURNITURE ONLINE ORDERING USING CHATBOT

    INTAN NADIRAH BINTI AHMAD

    BACHELOR OF COMPUTER SCIENCE

    (SOFTWARE DEVELOPMENT) WITH HONOURS

    FACULTY OF INFORMATICS AND COMPUTING

    UNIVERSITI SULTAN ZAINAL ABIDIN

    2019

  • i

    DECLARATION

    I hereby declare that this report is based on my original work except for quotations

    and citations, which have been duly acknowledged. I also declare that it has not

    been previously or concurrently submitted for any other degree at Universiti Sultan

    Zainal Abidin or other institutions.

    Name : Intan Nadirah Binti Ahmad

    Date : 7 May 2019

  • ii

    CONFIRMATION

    This is to confirm that this final year project entitled Furniture Online Ordering using

    Chatbot has been prepared and submitted by Intan Nadirah Binti Ahmad , with matric

    number BTAL17046608 and has found satisfactory in terms of scope, quality, and

    presentation as a part of the requirement for the Bachelor of Computer Science in

    Software Development in University Of Sultan Zainal Abidin (UniSZA). The research

    conducted and the writing of this report was under my supervison.

    Name : Prof. Madya Dr. Engku Fadzli

    Hasan Bin Syed Abdullah

    Date : 7 May 2019

  • iii

    DEDICATION

    I am using this opportunity to express my gratitude to everyone who has supported me

    to complete my final year project Furniture Online Ordering using Chatbot

    successfully. I am thankful for their aspiring guidance, invaluably constructive criticism

    and friendly advice during this project work.

    I express my greatest gratitude to my supervisor, Prof. Madya Dr. Engku Fadzli Hasan

    Bin Syed Abdullah, who helps in guiding me throughout my journey in finishing this

    project. Under his supervision with a lot of advices, I was able to complete this final

    year project successfully. Then, a honorable respect I present to my family especially

    my parents for their understanding with my conditions.

    I would also love to thanks all my friends and my course mates for supporting me and

    gave me an aspiration to improve this project. I would like to thank all the people for

    their help whether it was directly or indirectly to complete this project.

  • iv

    ABSTRACT

    Furniture Online Ordering using Chatbot was developed to helps entrepreneurs to get

    closer to customers. This chatbot may be able will help the seller to promote their

    products, engage customers and boost revenue. Then, it also can assist the customer

    throughout the purchase process to make purchases more easily. It is a demand

    nowadays, where it can save time and efforts by automating customer support. The

    RAD method is used in this project to ensures that the development of the system runs

    smoothly and according to planning. This model have four main phases, which are

    Analysis and Quick Design, Prototype Cycles, Testing and Deployment. The expected

    result for the following proposed project is the user can choose any answer that has been

    provided by the chatbot system and make a booking. Then the user will be able to

    communicate with the chatbot anytime.

  • v

    ABSTRAK

    Pesanan perabot secara atas talian menggunakan Chatbot telah dibangunkan untuk

    membantu para usahawan untuk lebih dekat dengan para pelanggan. Chatbot ini dapat

    membantu penjual mempromosikan produk mereka, melibatkan pelanggan dan

    meningkatkan pendapatan. Kemudian, ia juga dapat membantu pelanggan sepanjang

    proses pembelian untuk membuat pembelian lebih mudah. Ini adalah permintaan pada

    masa kini, di mana ia dapat menjimatkan masa dan usaha dengan mengautomasikan

    sokongan pelanggan. Kaedah RAD digunakan dalam projek ini untuk memastikan

    pembangunan sistem berjalan lancar dan mengikut perancangan. Model ini

    mempunyai empat fasa utama, iaitu Analisis dan Rancang Pantas, Siklus Prototaip,

    Pengujian dan Penyebaran. Hasil yang diharapkan untuk projek yang dicadangkan

    berikut adalah pengguna dapat memilih apa jawapan yang telah disediakan oleh sistem

    chatbot dan melakukan pemesanan. Kemudian pengguna akan dapat berkomunikasi

    dengan chatbot pada bila-bila masa.

  • vi

    CONTENTS

    PAGE

    DECLARATION i

    CONFIRMATION ii

    DEDICATION iii

    ABSTRACT iv

    ABSTRAK v

    CONTENTS vi

    LIST OF TABLE viii

    LIST OF FIGURES ix

    LIST OF ABBREVIATION x

    CHAPTER I INTRODUCTION

    1.1 Introduction 1

    1.2 Problement Statement 2

    1.3 Objectives 2

    1.4 Scopes 3

    1.5 Limitation of work 4

    1.6 Expected Result 4

    1.7 Activities and Milestones (Gantt Chart) 5

    CHAPTER II LITERATURE REVIEW

    2.1 Introduction for Chatbot 6

    2.2 Introduction for Telegram 7

    2.3 Related Research Technique and Tools 8

    CHAPTER III METHODOLOGY

    3.1 Introduction 11

    3.2 Project Methodology 12

    3.2.1 Phases in Rapid application development model 13

    3.2.1.1 Analysis and Quick Design Phase 13

    3.2.1.2 Prototypes Cycles Phase 13

    3.2.1.3 Testing Phase 14

    3.2.1.4 Deployment Phase 14

    3.3 System Requirement 15

    3.4 System Design 16

  • vii

    3.4.1 Framework Design 17

    3.4.2 Context Diagram (CD) 17

    3.4.3 Data Flow Diagram (DFD) 18

    3.4.3.1 DFD Level 0 18

    3.4.3.2 DFD Level 1 19

    3.4.4 Entity Relationship Diagram (ERD) 21

    3.5 Data Dictionary

    22

    CHAPTER IV CONCLUSION 25

    REFERENCES 26

  • viii

    LIST OF TABLES

    TABLE TITTLE

    PAGE

    1.1 Activity and milestone for FYP I 5

    3.1 Hardware used 15

    3.2 Software Used 15

  • ix

    LIST OF FIGURES

    FIGURE TITLE PAGE

    2.1 Chatbot Operations 7

    3.1 Rapid Application Development Model 12

    3.2 Framework for Furniture Online Ordering using Chatbot

    System

    17

    3.3 Context Diagram for Furniture Online Ordering using

    Chatbot System

    18

    3.4 Data Flow Diagram Level 0 for Furniture Online Ordering

    using Chatbot System

    19

    3.5 Data Flow Diagram Level 1 for Booking process 19

    3.6 Data Flow Diagram Level 1 for Payment process 20

    3.7 Entity Relationship Diagram for of Furniture Online

    Ordering using Chatbot System

    21

    3.8 Data Dictionary for Customer 22

    3.9 Data Dictionary for Booking 22

    3.10 Data Dictionary for Sofa 23

    3.11 Data Dictionary for Diningtable 23

    3.12 Data Dictionary for Payment 24

  • x

    LIST OF ABBREVIATIONS/TERMS/SYMBOLS

    CD Context Diagram

    DFD Data Flow Diagram

    ERD Entity Relationship Diagram

    FYP Final Year Project

    RAD Rapid Application Development

  • 1

    CHAPTER I

    INTRODUCTION

    1.1 Introduction

    A Chatbot is an assistant that communicates with the user through text messages, a

    virtual companion that integrates into websites, applications or instant messengers and

    helps entrepreneurs to get closer to customers. Such a bot is an automated system of

    communication with users. It is a demand nowadays, where it can save time and efforts

    by automating customer support. In this case, the chatbot for Furniture Online Ordering

    using Chatbot is proposed to enhance the relationship with the customer. This chatbot

    will help the seller to promote their products, engage customers and boost revenue.

    Then, it also can assist the customer throughout the purchase process to make purchases

    more easily

  • 2

    1.2 Problem Statement

    Customer relationships are the most important of today, problems arise when

    sellers take a long time to provide feedback to customer inquiries. Customers have to

    wait a long time for the response that will affect their purchase decision. Moreover,

    there is no faster platform for customers to communicate with the seller except with the

    message. They need to have a company number to do so. Finally, customers are more

    comfortable chatting online which makes them willing to type order and talk to a boat.

    This is because with fast feedback it can facilitate and expedite their dealings.

    1.3 Objectives

    In general, the purpose of Furniture Online Ordering using Chatbot System is to

    help customer to make purchasing easier and faster. Besides, it also assist the customer

    to know the details about the furniture. The objectives are defined as below to design a

    chatbot that contains information about furniture. Next, to develop a chatbot that

    answers quickly and efficiently for some question from the customer. Finally, to test the

    functionalities of the proposed system either it able to meet the requirement.

  • 3

    1.4 Scopes

    The scope is going to outline the users and functions of this application system

    and makes the implementation easier. The scope of this system is divided into two

    which are user scope and system scope.

    1.4.1 User Scope

    • The system shall allow the user to start the conversation.

    • The system shall allow the user to choose the answer option from the system.

    • The system shall allow the user to view the information about the furniture.

    • The system shall allow the user to make a booking.

    • The system shall allow the user to cancel the product before making a

    payment.

    1.4.2 System Scope

    • The system shall be able to respond to the questions that choose.

    • The system shall be able to show the information about the furniture.

    • The system shall be able to accept the booking from the user.

    • The system shall be able to update the stock in the database.

  • 4

    1.5 Limitation of Work

    There are limitations and constraint that occurred throughout the development of

    this online chatbot. These problems and limitations in conducting this study are the

    chatbots has a very limited dictionary where it is only able to understand a certain

    question that has been asked by the user.

    1.6 Expected Result

    The expected result for the following proposed project is the user can choose

    any answer that has been provided by the chatbot system and make a booking. Then the

    user will be able to communicate with the chatbot anytime.

  • 5

    1.7 Activity and Milestone

    Table 1.1 below show activity and duration time to complete the documentation for

    Final Year Project 1 :

    Table 1.1 : Activity and milestone for FYP 1

  • 6

    CHAPTER II

    LITERATURE REVIEW

    2.1 Introduction for Chatbot

    A chatbot is artificial intelligence (AI) software. It was the most advanced and

    promising expressions of interaction between humans and machines that only

    represents the natural evolution of a Question Answering system leveraging Natural

    Language Processing (NLP). Then, it has been used to simulate a conversation or a chat

    with a user in natural language. Chatbot often used through messaging applications,

    websites, mobile apps or through the telephone. The chatbot is very important

    applications that can streamline interactions between people and services that enhance

    the customer experience. It also offers new opportunities to many companies to

    improve customers engagement process and operational efficiency that can reduce the

    typical cost of customer service.

  • 7

    The picture below illustrates how a chatbot operates and responds to the

    question. First, the chatbot will accepts the input from a user. Then, it analyzes the

    user’s request to identify the user intent and to extract relevant entities. When the user’s

    intent has been identified, the chatbot composes an answer and reply for the user’s

    request.

    Figure 2.1 Chatbot Operations

    2. 2 Introduction for Telegram

    Telegram is a cloud-based mobile and desktop messaging app with a focus on

    security and speed. It use end-to-end encryption by mean that all data sent and

    received via Telegram cannot be deciphered when intercepted by ISPs, network

    administrators or other third parties. Telegram is for everyone who wants fast and

    reliable messaging and calls. Telegram let user to send messages, photos, videos and

    files of any type and create groups for up to 200,000 people or channels for

    broadcasting to unlimited audiences. Business users and small teams may like the large

    groups, usernames, desktop apps and powerful file sharing options.

    Analyze

    request

    Identify intent

    and entities

    User

    input

    Compose

    reply

  • 8

    2. 3 Related Research Technique and Tools

    The first related works is form article [1] . ALICE Chatbot is the Artificial

    Linguistic Internet Computer Entity that came from Wallace in 1995. In the ALICE

    architecture, alternative language knowledge models can be plugged and played

    because the chatbot engine and the language knowledge model are separated. The

    advantages of ALICE are its deliberate simplicity of the pattern-matching algorithms

    and rely on a very large number of basic categories or rules matching input patterns to

    output templates. Then, ALICE also more advanced because of the number of simple

    rules is large to make up for lack of morphological, syntactic, and semantic NLP

    (programming language) modules. However, the main lack in ALICE is it needs to

    develop the knowledge manually.

    Second article [2] is about Chappie a semi-automatic intelligent chatbot that was

    developed to meet the requirement from a business side and desire for efficiency and

    automation. Chappie can be used as a routing agent that can classify the requirement of

    the user. It changes it into one of the services provided by business through the first few

    chats than transfer it to an agent expert in that service. The good thing about Chappie is

    it has been designed smartly to extracts all sorts of information such as name, intent,

    mail, city, et cetera and generates a coherent response to the user, but it needs more

    sophisticated algorithms to extract intent and classify chats more accurately.

  • 9

    Third article [3] is DocChat, a novel information retrieval approach for chatbot

    engines. It was used to leverage unstructured documents, instead of Q-R pairs to

    respond to speech. The features of this models is depending on existing resources are

    readily available such as Q-Q pairs, Q-A pairs, ‘sentence-next sentence’ pairs, and et

    cetera, instead of requiring manually. Second, it was very good in adaptation capability

    where it can learn internal relationships between speech and responses based on

    statistical models. Regardless all of that, collecting such QR pairs is intractable for

    many specific domains.

    AliMe Chat [4] is the next article about an open-domain chatbot engine that

    integrates the joint results for Information Retrieval (IR) and Sequence to Sequence

    (Seq2Seq) based on generation models. To optimize the joint results of IR and

    generation models, it use a novel hybrid approach. Then, it shows that the approach

    outperforms both in IR and generation. The engine show a better performance

    afterwards. AliMe Chat is used for a real-world industrial application. Unfortunately,

    Seq2Seq generation models tend to generate inconsistent or meaningless answers and

    do not scale up well according to context-aware techniques in some situation. Lastly,

    AliMe Chat is lack of personification like empowering the chatbot with characters and

    emotions.

  • 10

    Next article is MILABOT, a deep reinforcement learning chatbot [5] that was

    developed by the Montreal Institute for Learning Algorithms (MILA) for the Amazon

    Alexa Prize competition. It was well-known for its ability that capable of conversing

    with humans. Then, the system consists of natural language generation and retrieval

    models, including neural network and template-based models. MILABOT also has been

    trained to only choose an appropriate response with reference to the models in its group.

    Through the testing that has been performed on the system that involves a real-world

    user, it shows that the system performed significantly better than other systems.

    Last but not least is Pandaibot, a boat for Telegram that builds as a side project

    to provide convenience to all in some cases. Functions that available in Pandaibot are

    animated pictures and pictures, prayer times in Malaysia, and also functions to check

    postage delivery status. Among the advantages of Pandaibot is that users can check a

    delivery status from PosLaju, SkyNet, City Link and GD Express via Telegram without

    leaving the messaging app. In addition, users can also check the time of the prayer, use

    the dictionary and read the news from several portals and also check the weather.

    PandaiBot also allows users to search for images and GIFs directly via Telegram.

    However, Pandaibot has a very limited dictionary where it only allow the user to choose

    the answer option that has been provided.

  • 11

    CHAPTER III

    METHODOLOGY

    3.1 Introduction

    This chapter will discuss about the methodology that used to develop this

    system. Therefore, the rapid application development model is used for Furniture

    Online Ordering using Chatbot System. This model explains more detail about every

    phase that involve in this project development to make sure this system developed

    successfully. Furthermore, this chapter also explains justification for the use of methods

    and technique as well as hardware and software requirement during this project.

    Besides, this chapter contains Context Diagram (CD), Data Flow Diagram (DFD) and

    Entity Relationship Diagram (ERD) for the this project.

  • 12

    3.2 Project Methodology

    Methodology is a method used to develop a system. A good planning and

    methodology must be used to accomplish the objectives of this project. Rapid

    application development model has been chosen as the methodology to develop this

    system. The benefits of rapid application development are changing requirements can

    be accommodated and progress can be measured. Besides, iteration time can be short

    with use of powerful RAD tools. The flexibility of the model make the development

    time reduced and increases reusability of components. Hence, Rapid application

    development model is encourages customer feedback. Figure 3.1 below shows the

    Rapid application development model. This model have four main phases, which are

    Analysis and Quick Design, Prototype Cycles, Testing and Deployment.

    Figure 3.1 : Rapid Application Development Model

  • 13

    3.2.1 Phases in Rapid application development model

    3.2.1.1 Analysis and Quick Design Phase

    During this phase, all the modules will be design based on Furniture

    Online Ordering using Chatbot system. The analysis and quick design phase is

    the most important phase to make sure the module development is properly

    planned. In the analysis phase, the detailed about this proposed system was

    discussed. Problem statements, objectives, system’s scope and limitation of

    work were defined as well. The quick design of the Furniture Online Ordering

    using Chatbot System was conducted by reviewing the journal.

    3.2.1.2 Prototypes Cycles Phase

    This phase is to ensure that the project met every planning that has been

    discussed in Analysis & Quick Design Phase. A prototype design for module

    customer, view and check furniture information, booking and payment will be

    developed. Each module will go through the developed, demonstrate and refine

    phase before proceed to the testing phase.

  • 14

    3.2.1.3 Testing Phase

    In this testing phase prototypes for each module in Furniture Online

    Ordering using Chatbot systems are convert from the design phase into the

    working model. The phase breaks down into several smaller steps like

    preparation for rapid deployment, program and application development,

    coding, unit, integration, and system testing.

    3.2.1.4 Deployment Phase

    This is the implementation phase. The finished product of Furniture

    Online Ordering using Chatbot goes to launch. It includes data conversion,

    testing, and changeover to the new system, as well as user training. The

    objectives of this stage are to install the system in production operation with

    minimal disruption of normal business activity, to maximize the effectiveness of

    the system in supporting the intended business activities and to identify

    potential future enhancement.

  • 15

    3.3 System Requirement

    The requirement of hardware and software are the most important part of some

    project because it will guide to the successful project. The hardware and software

    requirements used in this project are shown in Table 3.1 and 3.2 below :

    Table 3.1: Hardware used in this project

    No Hardware Specification

    1 Laptop Processor : AMD A-10-8700P Radeon R6, 10 Compute Cores 4C+6G 1.80GHz

    Installed memory (RAM) : 4.00GB

    2 Mouse For make easy task and faster to click when developing project.

    3 Pendrive To store the backup file

    Storage : 32GB

    4 Printer Canon MP287 To print out the documentation

    To print picture dictionary

    Table 3.2 : Software used in this project

    No Software Specification

    1 Xampp To create a table and database

    2 MySQL To save the data in database.

    3 Notepad++ To make a coding for the system

    4 Microsoft Word 2010 To make a proposal and thesis

    5 Edraw Max To create Context Diagram(CD), Entity Relationship Diagram(ERD) and Data Flow Diagram(DFD)

  • 16

    3.4 System Design

    Developing a planned system is a process and planning activity in designing the

    system. This design was made to improve the existing system after its weakness was

    identified through the results of the investigation and previous analysis. In Furniture

    Online Ordering using Chatbot System , theContext Diagram (CD) and Data Flow

    Diagram (DFD) act as physical design while Entities Relationship Diagram (ERD) act

    as logical design.

    3.4.1 Framework Design

    A framework is a real or conceptual structure that use to serve as a guide for

    expands the structure into something useful. A framework may be for a set of

    functions within a system and how it interrelate between the layers of an

    operating system, the layers of an application subsystem and how

    communication should be standardized at some level of a network. The

    framework shown in Figure 3.2 below shows how the system responds to the

    user question. First, the chatbot will accepts the input from a user. Then, it

    analyzes the user’s request to identify the user intent and to extract relevant

    entities. When the user’s intent has been identified, the chatbot composes an

    answer and reply for the user’s request.

    .

  • 17

    Figure 3.2: Framework for Furniture Online Ordering using Chatbot

    System

    3.4.2 Context Diagram

    The Context diagram is a Data Flow Chart which shows the scope

    and boundaries of an information system. It usually shows the entities

    and processes involved in the system to be redesigned which illustrates

    how moving from one process to another. It is the first figure drawn

    before the Data Flow Chart.

    In Furniture Online Ordering using Chatbot System, it can be

    identified how this system works. Among the major entities in the

    system are customers. The context diagram in Figure 3.2 below shows

    customers input their information as requested, customer input the

    details of the furniture they want to see, then make a booking and

    payment.

  • 18

    Figure 3.3: Context Diagram for Furniture Online Ordering using

    Chatbot System

    3.4.3 Data Flow Diagram

    3.4.3.1 DFD Level 0

    The Data Flow Chart is an overview of the overall system trip

    diagram in detail and overall. It helps user to understand the flow of the

    system that built. The first process is the customer authentication

    process into the system. After conducting the validation process,

    customer will go through the second process to view furniture

    information. Then the customer will input their information into the

    system which is the third process. Then the customer made the fourth

    process of booking the furniture and then the customer made the

    payment the fifth process.

  • 19

    Figure 3.4 : Data Flow Diagram Level 0 for Furniture Online Ordering

    using Chatbot System

    3.4.3.2 DFD Level 1

    3.4.3.2.1 Booking

    The figure 3.5 shows the DFD Level 1 for booking process. The

    customer can make a booking and will be stored in booking

    database.

    Figure 3.5 : Data Flow Diagram Level 1 for Booking process

  • 20

    3.4.3.2.2 Payment

    The figure 3.5 shows the DFD Level 1 for payment process. The

    customer can make a payment and will be stored in payment

    database.

    Figure 3.6 : Data Flow Diagram Level 1 for Payment process

  • 21

    3.4.4 Entity Relationship Diagram

    The Entity Relationship Diagram (ERD) is a graphical representation of an

    information system that shows the relationship between people, objects, places,

    concepts or event within the system. The ERD of Furniture Online Ordering

    using Chatbot System project consist of four table entities such as Customer,

    Booking, Furniture and Payment. The ERD of Furniture Online Ordering using

    Chatbot System shown as the Figure 3.7 below

    Figure 3.7 : Entity Relationship Diagram for of Furniture Online Ordering using

    Chatbot System

  • 22

    3.5 Data Dictionary

    The database in the main part of the system development because it will store

    the data that are used by the system. The list of tables involved in this system are list as

    the figure 3.8 until 3.12 below :

    Figure 3.8 below is a Customer table. This table has 5 fields. The field is customer_id,

    name, ic_num, address and phone_num. In this table customer_id is the primary key

    (PK).

    Figure 3.8 : Data Dictionary for Customer

    Figure 3.9 below is a Booking table. This table has 7 fields. The field is booking_id,

    customer_id, furniture_id, name, price, date and status. In this table booking_id is the

    primary key (PK).

    Figure 3.9 : Data Dictionary for Booking

  • 23

    Figure 3.10 below is a sofa table. This table has 4 fields. The field is fileToUpload,

    id_sofa name and price. In this table id_sofa is the primary key (PK).

    Figure 3.10 : Data Dictionary for Sofa

    Figure 3.11 below is a Diningtable table. This table has 4 fields . The field is

    fileToUpload, id_diningtable, name and price. In this table id_diningtable is the

    primary key (PK).

    Figure 3.11 : Data Dictionary for Diningtable

  • 24

    Figure 3.12 below is a Payment table. This table has 5 fields. The field is payment_id,

    fileToUpload, customer_id, total and date. In this table payment_id is the primary key

    (PK).

    Figure 3.12 : Data Dictionary for Payment

  • 25

    CHAPTER IV

    CONCLUSION

    Furniture Online Ordering Using Chatbot is a system which focuses on helping

    entrepreneurs to get closer to customers and assist the customer throughout the

    purchase process to make purchases more easily. Based on previous studies and

    discussion, a chatbot is proposed to be implemented for Furniture Online Ordering.

    This chatbot is an assistant that communicates with the user through text messages. This

    is very important things that will help the seller to enhance their customer relationship.

    Hopefully, this system can help the seller to overcome their problem and make the

    business more successful.

  • 26

    REFERENCES

    [1] AbuShawar, B., & Atwell, E. (2015). ALICE chatbot: Trials and outputs.

    Computación y Sistemas, 19(4), 625-632.

    [2] Behera, B. (2016). Chappie-a semi-automatic intelligent chatbot. Write-Up.

    [3] Yan, Z., Duan, N., Bao, J., Chen, P., Zhou, M., Li, Z., & Zhou, J. (2016).

    Docchat: An information retrieval approach for chatbot engines using unstructured

    documents. In Proceedings of the 54th Annual Meeting of the Association for

    Computational Linguistics (Volume 1: Long Papers) (Vol. 1, pp. 516-525).

    [4] Qiu, M., Li, F. L., Wang, S., Gao, X., Chen, Y., Zhao, W., ... & Chu, W. (2017,

    July). Alime chat: A sequence to sequence and rerank based chatbot engine. In

    Proceedings of the 55th Annual Meeting of the Association for Computational

    Linguistics (Volume 2: Short Papers) (pp. 498-503).

    [5] Serban, I. V., Sankar, C., Germain, M., Zhang, S., Lin, Z., Subramanian, S., ...

    & Rajeswar, S. (2018). A deep reinforcement learning chatbot (Short Version).

    arXiv preprint arXiv:1801.06700.