This document discusses wireless communication technologies including Bluetooth. It provides details on Bluetooth such as:
- Bluetooth allows devices to connect in ad-hoc networks within 10 meters without infrastructure. It aims for a 1 Mbps data rate.
- A Bluetooth network consists of piconets, with one device acting as a master and up to seven acting as slaves. Multiple piconets can be connected in a scatternet.
- Bluetooth devices operate on 79 channels in the 2.4 GHz band using frequency hopping spread spectrum. The master determines the hopping sequence.
- The Bluetooth protocol stack includes layers for the radio, baseband, link management, logical link control, and service discovery. It supports both connection-oriented
Bluetooth is an open standard for short-range
digital radio to interconnect a variety of devices Cell
phones, PDA, notebook computers, modems,
cordless phones, pagers, laptop computers, printers,
cameras by developing a single-chip, low-cost,
radio-based wireless network technology.
Bluetooth is an open standard for short-range
digital radio to interconnect a variety of devices Cell
phones, PDA, notebook computers, modems,
cordless phones, pagers, laptop computers, printers,
cameras by developing a single-chip, low-cost,
radio-based wireless network technology.
This PPT is very much useful for practitioners who are all making products and services to society. Mangers think innovatively and come up with innovative ideas. It is a 5 stage processing also called a design thinking process. The stages are empathize, define, ideate, prototype and test.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
An Approach to Detecting Writing Styles Based on Clustering Techniquesambekarshweta25
An Approach to Detecting Writing Styles Based on Clustering Techniques
Authors:
-Devkinandan Jagtap
-Shweta Ambekar
-Harshit Singh
-Nakul Sharma (Assistant Professor)
Institution:
VIIT Pune, India
Abstract:
This paper proposes a system to differentiate between human-generated and AI-generated texts using stylometric analysis. The system analyzes text files and classifies writing styles by employing various clustering algorithms, such as k-means, k-means++, hierarchical, and DBSCAN. The effectiveness of these algorithms is measured using silhouette scores. The system successfully identifies distinct writing styles within documents, demonstrating its potential for plagiarism detection.
Introduction:
Stylometry, the study of linguistic and structural features in texts, is used for tasks like plagiarism detection, genre separation, and author verification. This paper leverages stylometric analysis to identify different writing styles and improve plagiarism detection methods.
Methodology:
The system includes data collection, preprocessing, feature extraction, dimensional reduction, machine learning models for clustering, and performance comparison using silhouette scores. Feature extraction focuses on lexical features, vocabulary richness, and readability scores. The study uses a small dataset of texts from various authors and employs algorithms like k-means, k-means++, hierarchical clustering, and DBSCAN for clustering.
Results:
Experiments show that the system effectively identifies writing styles, with silhouette scores indicating reasonable to strong clustering when k=2. As the number of clusters increases, the silhouette scores decrease, indicating a drop in accuracy. K-means and k-means++ perform similarly, while hierarchical clustering is less optimized.
Conclusion and Future Work:
The system works well for distinguishing writing styles with two clusters but becomes less accurate as the number of clusters increases. Future research could focus on adding more parameters and optimizing the methodology to improve accuracy with higher cluster values. This system can enhance existing plagiarism detection tools, especially in academic settings.
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Water billing management system project report.pdfKamal Acharya
Our project entitled “Water Billing Management System” aims is to generate Water bill with all the charges and penalty. Manual system that is employed is extremely laborious and quite inadequate. It only makes the process more difficult and hard.
The aim of our project is to develop a system that is meant to partially computerize the work performed in the Water Board like generating monthly Water bill, record of consuming unit of water, store record of the customer and previous unpaid record.
We used HTML/PHP as front end and MYSQL as back end for developing our project. HTML is primarily a visual design environment. We can create a android application by designing the form and that make up the user interface. Adding android application code to the form and the objects such as buttons and text boxes on them and adding any required support code in additional modular.
MySQL is free open source database that facilitates the effective management of the databases by connecting them to the software. It is a stable ,reliable and the powerful solution with the advanced features and advantages which are as follows: Data Security.MySQL is free open source database that facilitates the effective management of the databases by connecting them to the software.
Water billing management system project report.pdf
[PPT] _ 1.3 Bluetooth.pptx
1. UNIT I : Wireless Communication
By
Mr.S.Selvaraj
Asst. Professor (SRG) / CSE
Kongu Engineering College
Perundurai, Erode, Tamilnadu, India
Thanks to and Resource from : Wireless communication by Jochen H. Schiller, 2nd Edition, Pearson, 2009.
18CST63 – Mobile Communication and IoT
2. Unit I : Contents
1. Wireless transmission
– Frequencies for radio transmission
– Signals
– Antennas
2. GSM
3. GPRS
4. Satellite Systems
5. Wireless LAN
– Infrared Vs Radio Transmission
– Infrastructure Networks and Adhoc Networks
– IEEE 802.11
– Bluetooth
– Introduction to 3G, 4G and 5G.
5/16/2022 2
1.3 _ Bluetooth
3. Bluetooth
• Bluetooth is also called as ad-hoc piconets, which
are local area networks with a very limited
coverage and without the need for an
infrastructure.
• This is a different type of network is needed to
connect different small devices in close
proximity (about 10 m) without expensive wiring
or the need for a wireless infrastructure.
• The envisaged gross data rate is 1 Mbit/s,
asynchronous (data) and synchronous (voice)
services should be available.
5/16/2022 1.3 _ Bluetooth 3
4. IrDA
• Many of today’s devices offer an infra red data association
(IrDA) interface with transmission rates of, e.g., 115 kbit/s
or 4 Mbit/s.
• There are various problems with IrDA:
– its very limited range (typically 2 m for built-in interfaces),
– the need for a line-of-sight between the interfaces, and,
– it is usually limited to two participants, i.e., only point-to-point
connections are supported.
– IrDA has no internet working functions, has no media access,
or any other enhanced communication mechanisms.
• The big advantage of IrDA is
– its low cost, and
– it can be found in almost any mobile device (laptops, PDAs,
mobile phones).
5/16/2022 1.3 _ Bluetooth 4
5. Bluetooth
• In spring 1998 five companies (Ericsson, Intel,
IBM, Nokia, Toshiba) founded the Bluetooth
consortium with the goal of developing a
single-chip, low-cost, radio-based wireless
network technology.
• In 2001, the first products hit the mass
market, and many mobile phones, laptops,
PDAs, video cameras etc. are equipped with
Bluetooth technology today.
5/16/2022 1.3 _ Bluetooth 5
6. WPAN
• wireless personal area networks (WPAN) under the
following five criteria:
– Market potential: How many applications, devices, vendors,
customers are available for a certain technology?
– Compatibility: Compatibility with IEEE 802.
– Distinct identity: Originally, the study group did not want to
establish a second 802.11 standard. However, topics such as,
low cost, low power, or small form factor are not addressed in
the 802.11 standard.
– Technical feasibility: Prototypes are necessary for further
discussion, so the study group would not rely on paper work.
– Economic feasibility: Everything developed within this group
should be cheaper than other solutions and allow for high-
volume production.
• IEEE founded its own group for WPANs, IEEE 802.15, in
March 1999.
5/16/2022 1.3 _ Bluetooth 6
7. Bluetooth Architecture
• Like IEEE 802.11b, Bluetooth operates in the 2.4
GHz ISM band.
• Bluetooth operates on 79 channels in the 2.4 GHz
band with 1 MHz carrier spacing.
• Each device performs frequency hopping with
1,600 hops/s in a pseudo random fashion.
• Bluetooth applies FHSS for interference
mitigation (and FH-CDMA for separation of
networks).
• A very important term in the context of Bluetooth
is a piconet and scatternet.
5/16/2022 1.3 _ Bluetooth 7
8. Piconet
• A piconet is a collection of Bluetooth devices
which are synchronized to the same hopping
sequence.
• One device in the piconet can act as master (M),
all other devices connected to the master must
act as slaves (S).
• Each piconet has a unique hopping pattern.
• The master determines the hopping pattern in
the piconet and the slaves have to synchronize to
this pattern.
5/16/2022 1.3 _ Bluetooth 8
10. Piconet
• Two additional types of devices are shown:
– parked devices (P) can not actively participate in the piconet (i.e., they do not
have a connection), but are known and can be reactivated within some
milliseconds
– Devices in stand-by (SB) do not participate in the piconet.
• Each piconet has exactly one master and up to seven simultaneous
slaves.
• More than 200 devices can be parked.
• The reason for the upper limit of eight active devices, is the 3-bit address
used in Bluetooth.
• If a parked device wants to communicate and there are already seven
active slaves, one slave has to switch to park mode to allow the parked
device to switch to active mode.
• The hopping pattern is determined by the device ID, a 48-bit worldwide
unique identifier.
• The phase in the hopping pattern is determined by the master’s clock.
• All active devices are assigned a 3-bit active member address (AMA).
• All parked devices use an 8-bit parked member address (PMA).
• Devices in stand-by do not need an address.
5/16/2022 1.3 _ Bluetooth 10
12. Scatternet
• All users within one piconet have the same
hopping sequence and share the same 1 MHz
channel.
• As more users join the piconet, the throughput
per user drops quickly
– a single piconet offers less than 1 Mbit/s gross data
rate.
– Only having one piconet available within the 80 MHz
in total is not very efficient.
• This lead to the idea of Scatternet.
5/16/2022 1.3 _ Bluetooth 12
14. Scatternet
• one device can participates in two different piconets.
• Both piconets use a different hopping sequence, always
determined by the master of the piconet.
• Bluetooth applies FH-CDMA for separation of piconets.
• Adding more piconets leads to a graceful performance degradation
of a single piconet because more and more collisions may occur.
• Before leaving one piconet, a slave informs the current master that
it will be unavailable for a certain amount of time. The remaining
devices in the piconet continue to communicate as usual.
• A master can also leave its piconet and act as a slave in another
piconet. It is clearly not possible for a master of one piconet to act
as the master of another piconet as this would lead to identical
behavior.
• As soon as a master leaves a piconet, all traffic within this piconet
is suspended until the master returns.
• However, scatternets are not yet supported by all devices.
5/16/2022 1.3 _ Bluetooth 14
16. Bluetooth Core Protocol
• Radio: Specification of the air interface, i.e., frequencies,
modulation, and transmit power
• Baseband: Description of basic connection establishment, packet
formats, timing, and basic QoS parameters.
• Link manager protocol: Link set-up and management between
devices including security functions and parameter negotiation.
• Logical link control and adaptation protocol (L2CAP): Adaptation of
higher layers to the baseband (connectionless and connection-
oriented services).
• Service discovery protocol: Device discovery in close proximity plus
querying of service characteristics.
5/16/2022 1.3 _ Bluetooth 16