Software for data analysis programming with r jobs

ONLY RESPONSES THAT ADDRESS THE QUESTION AT the END WILL BE CONSIDERED? I need a knowledgeable Stratum v2 expert for assistance with the following tasks: - Mining Pool Configuration: Proper setup and configuration of the mining pool. - Mining Software Integration: Seamless integration of mining software into the current setup. - Protocol Optimization: Optimization of the Stratum v2 protocol to ensure peak mining performance. The specific programming languages used for the current implementation are unknown as the previous question was skipped. In terms of hardware, my setup currently includes Windows and GPU. Thus, the successful freelancer should have experience working with these specifications and will consider this in the implement...

...task involves application of k-Means clustering in Orange data mining software with the aim to segment and profile the churners in Customer Churn file. By applying the k-Means clustering you need to explore how many types of churners exist and what characterizes those types. More specifically, this assignment consists of two tasks:  Task a (Segmentation): Establish how many types of churners there are and the size of those types. This involves dividing the churners into segments.  Task b (Profiling): Profile and appropriately name the identified types of churners based on the values of their shared characteristics, i.e. variables. Your submission ought to include: 1. Orange workflow1 containing the k-Means clustering analysis of segments and profiles. 2. S...

...project to its fruition, I will need a professional who can design a communication link with various parameters. Thereafter, we'll need to carry out Link-level modeling and simulations in Matlab. The ideal candidate should: - Have a solid understanding of point to point communication systems, specifically both simplex and duplex systems. - Be proficient in using MATLAB for simulations. Following the simulation, we'll analyze the performance of our designed system using several metrics. For the simplex system, we would be interested in assessing its: - Error performance - Power efficiency - Bandwidth efficiency - Implementation complexity - Implications on system design For the duplex system, the metrics for evaluation would be: - Error...

I'm in need of an expert in Excel, A...handled were not decided upon, proficient data organization skills are essential as we may need to restructure large data sets. The ideal freelancer for this job should: - Have expert skills and proficiency in Excel and Access. Knowledge of other data organization tools will be considered a plus. - Showcase notable experience, specifically in dealing with large data sets and complex spreadsheets. - Since the specific tasks to perform were not mentioned, a flexible approach and ability to adapt with regard to potential data analysis and data entry tasks will be greatly appreciated. With your application, please include detailed description of your experience, particula...

...Engineer who can develop modules to help analyze the real-time electricity consumption for a variety of devices in our system. Backend: Key Points: - Devices to be analyzed include air conditioners, lights, and simple motors and other simple devices. - The analysis should cover both the collective consumption of groups of devices and the individual consumption patterns of each device. Ideal Experience: - Strong background in Machine Learning, ideally with experience in real-time data analysis. - Previous work in energy consumption analysis or similar fields would be a huge plus. - Proven track record in developing ML models for group and individual level analysis. The ML analysis we are looking for includes: - ...

...specific communication challenges in my operations. This advanced technology will aid in requesting more specific information for document retrieval, task completion, and progress updates that are currently barriers. Key Features and Responsibilities: - Construct an AI system that can precisely request added details - The AI tool should nurutre informations mainly for document retrieval, tasks execution, and progress report. - Should work effectively with email platforms as the primary communication tool. Ideal Experience: - Proven experience in AI and machine learning technology - Familiarity with corporate communication systems - Experience in integrating AI with Email services. This project aims at enhancing efficiency and productivity through cl...

I'm looking for a Python expert to help me set up a pipe network simulation and analyze the pressure data for detecting potential water leaks. The primary goal of this project is to simulate a water pipe network and subsequently identify potential leaks using pressure drop analysis. The simulation should be able to model the flow and pressure properties of a complex network of pipes. Key tasks: - Setting up the pipe network simulation using Python - Conducting pressure drop analysis for leak detection - Providing an intermediate level of detail in the analysis report - this should include the locations and estimated sizes of the potential leaks Ideal candidates for this project should have: - Proven experience in Python p...

I'm looking to automate a process in my manufacturing setup. This involves controlling a servo and timer to carry out specific tasks. Key Responsibilities: - Develop a system that ...and timer to carry out specific tasks. Key Responsibilities: - Develop a system that uses a combination of a servo and timer to automate a particular process in my manufacturing facility. - Ensure the system is able to operate efficiently and with high precision. Ideal Skills: - Proven experience in automation projects, particularly in a manufacturing setting. - Proficiency in programming and working with servos and timers. - Strong problem-solving skills to optimize the automation process. Note: I'm unsure about which platform would be the best for this project. I&#...

I am looking for a skilled professional who can design an emulator for Windows platform. This emulator should primarily support the programming language Python, and should be able to cater to users who wish to use Python for completing assignments. Key requirements: - Platform: Windows - Main functionality: Assignment completion tool - Supported programming language: Python Ideal Skills and Experience: - Strong proficiency in software development, particularly in designing emulators - Proficiency in Python programming language - Experience working with Windows platform - Previous experience in developing educational tools or software is a plus

...financial analyst to help me with a medium-term (3-5 years) cash flow forecast model. Key Tasks: -Produce a simplified cash flow model for a biodiesel manufacturing plant (ex. Diamond Green ) -Model should include appropriate costs for feedstock and revenue by product including (renewable diesel, LCFS credit prices, RIN prices and any other revenue sources or applicable tax incentives) - Model Creation: Develop a financial cash flow model that can reliably forecast our cash position over the next 3-5 years. Specifically, I'd like to be able to determine the break evens for a particular feedstock price, or incentive value. Skills/Experience Required: - Strong Finance Background: Deep understanding of financial analysis and forecasting. - Researc...

As a business focused on making data-driven decisions, I am seeking an expert to create a data analytics tool from scratch using ReactJS and AWS. The tool will analyze an array of data sources and present the results using insightful visualization techniques. Here are the requirements: - Implement Amazon Cognito for user authentication and authorization - Utilize AWS Amplify for the app's development and deployment - Integrate AWS API Gateway for efficient data exchange - Integrate Stripe for payments. Need complete flow Our tech stack looks like: - Amazon Amplify for app backend, and front end - Gatsby JS coupled with AppSync for front end - Amplify UI and MUI Material for UI components Features t...

...seeking an experienced data scientist and analyst to support me in improving my business operations through a data-driven approach. The project will involve tackling tasks across data cleaning, statistical analysis, and data structuring and algorithm implementation. Ideal Skills and Experience: - Proficiency in data cleaning and preprocessing to ensure that the data is in its most usable, accurate, and complete state. - Strong statistical analysis and modeling skills to extract meaningful insights and make accurate predictions. - Excellent experience in structuring data and implementing algorithms that are tailored to business needs. Data Sources: - Social Media Data: You should be comfortable working with...

The goal of this project is to gain some prac3cal experience in Android development and exercise your understanding of cellular and WiFi networks by measuring them. Our specific learning objectives include: • Getting familiar with the Android programming framework. • Implementing background services for Android. • Implementing network measurements using the Telephony and the Wifi Manager Android Apis. • Practicing technical code documentation. • Practicing teamwork.

...From SEO and social media marketing to email marketing and e-commerce strategies, we leverage cutting-edge techniques to drive results and exceed expectations. Position Available: We are currently hiring for multiple positions within our expert team: Content Marketing Connoisseur: Are you passionate about storytelling and creating valuable content? Join us to develop and execute content marketing strategies that resonate with our target audience and drive engagement. CRO Expert: Do you have a keen eye for optimization and improving conversion rates? Join our team to conduct in-depth analysis and implement conversion rate optimization strategies that enhance user experience and drive conversions SMM Guru: Do you live and breathe social media? As our social...

I'm looking for a skilled trading view indicator developer to create an indicator based on fair value gaps. The indicator will need to include alerts triggered by specific conditions. Details will be discussed later. Should have complete knowledge on trading view. Multiple timeframes will be used including the seconds timeframes. Key Requirements: Indicator: The focus of this project is to develop a robust trend-following indicator for trading purposes based on Fair value gaps. Details will be shared in detail. Basic knowledge about fair value gaps required. Platform: The indicator should be specifically designed for the trading view to work on all platform. Alert System: The indicator will need to include an alert system that can be triggered by specific con...

Hi gowthamsarathy, I noticed your profile and would like to offer you my project. We can discuss any details over chat.

I need a skilled freelancer to extract table data from a PDF file. The extracted data will be used for analysis in a Microsoft Excel spreadsheet. Key Requirements: - Extract tables from a PDF - Ensure data quality and integrity - Deliver the data in a Microsoft Excel format Ideal Skills: - Proficiency in PDF data extraction - Strong understanding of table structures - Experience in working with Microsoft Excel - Attention to detail and accuracy is crucial look attached PDF and EXCEL then Bid, start Bid writing PDF and sample attached. So I know you look my file

...and relevant lyrics for a variety of genres. Key Requirements: - Genres: Primarily Rap, Trap, and R&B, but also capable of writing for other categories. - Reference Tracks: I have over 40 reference tracks that I'll need you to work with. - Purpose: The tracks you'll be writing lyrics for are intended for promotional and maybe commercial use down the line. Ideal candidates will have: - A strong understanding and appreciation for rap, trap, and R&B music. - Proven experience in writing lyrics for a wide range of genres. - Ability to creatively adapt and work with multiple reference tracks Of me melodizing and flowing. - A portfolio or examples of previous work that demonstrate your songwriting sk...

I am looking for an experienced researcher to compile a detailed report on American citizens. The report should be comprehensive, with a particular focus on criminal and fraudulent activities. Key deliverables: - An in-depth analysis of criminal activities within the American populace - A detailed examination of fraud and general misconduct rates The ideal candidate for this job should have: - Proven experience in conducting research and compiling reports on societal issues - A strong understanding of criminal and fraudulent activities - Excellent analytical and writing skills Please note, the focus of this report is on the criminal and fraudulent aspects of American citizens.

I am looking for a highly experienced developer specifically skilled in Backtrader and Interactive Brokers integration to create an intricate trading strategy. Key components of this strategy include: - Incorporation of risk management tools to safeguard investments - Multiple time frame analysis for comprehensive market overview - Utilization of Exponential Moving Average (EMA) in decision making I require the strategy's entry and exit criteria to be based on: - Moving average crossovers to identify potential market opportunities - Identification of support and resistance levels to pinpoint price boundaries - Breakout strategy implementation to exploit significant price moves I am open to discussing other elements that you think might be beneficial to the ...

I'm looking for a skilled DevOps Engineer experienced in AWS to help design a robust architecture for my Spark and Sagemaker Machine Learning models. Key Requirements: - **AWS Services**: Your primary focus will be on utilizing Amazon S3 and Amazon Sagemaker effectively within the architecture. - **Programming Languages**: Familiarity with both Python and R is important, given that my models are built in those languages. - **Model Operations**: Your design should focus on enabling batch predictions and facilitate model training and retraining for the Machine Learning models. Ideal Skills: - Experience with Amazon S3 and Amazon Sagemaker are a must. - Proficiency in Python and R for fine-tuning or troubleshooting the mode...

I'm seeking an adept software developer to create a complexity logistics software. It will cater to various roles within our organization: from Admin users, Warehouse managers to tecnical team, and servicces. MAIN FEATURES: - Service Requirement Management: The software should effectively capture and communicate service requirements. - Feasibility Evaluation: As a key feature, the software should have the capability to assess the feasibility of each service requirement. - Task Assignment: I would like the software to automatically assign tasks based on the service requirement. - Material Assignment: It should also manage the assignment of materials to each task. - Inventory Management: Lastly, the software should keep track of our invento...

I will provide analysis of first 500 entries!

I need to create dynamic dashboards for health data reporting purposes. My requirements are as follows: • Expertise in data visualization and dashboard creation using Tableau • Experience in handling health data is favorable but not a must • The dashboard should be interactive • The end goal is to create comprehensive reports generated from our health data through top-tier visualization • Must possess the ability to convert health data into actionable insights through innovative visualization methods The professional I am seeking should have a proven track record in Tableau data visualization and dashboard creation. Knowledge in health data analysis or reporting would be a bonus.

...looking for an experienced business plan writer to craft a comprehensive plan that appeals to a general audience. Specific knowledge or experience within the boutique or retail sector would be highly beneficial for this project. The business plan should be well-structured and contain all the necessary elements, including but not limited to executive summary, company description, market analysis, organization & management setup, product line, marketing & sales, and financial projections. Ideal Skills & Experience: - Proven track record in business plan writing - Knowledge or direct experience in boutique/retail industry - Understanding of both macro and micro market dynamics - Experience in structuring financial projections for businesses This ...

...com/ We wish to have a direct url that replaces the process of searching for a member (eg member no 161068) and arrives at page two directly. For example, entering 161068 in the search box and selecting Checkedandvetted then pressing 'review this company' moves the user to page 2- review your experience. This is what we want to achieve with a single url. This is so that we can provide a url like that will do the same as the previous steps. Ideal skills for this job will include: - Strong knowledge of .NET programming - Experience in modifying applications - Technical ability to integrate new features using querystrings - Appreciation of best programming practices Your primary task will be to provide a page that will perform...

We ...and enthusiastic SEO Intern to join our team. This is an excellent opportunity for someone who is passionate about digital marketing and eager to gain hands-on experience in search engine optimization. Responsibilities: Assist in keyword research and analysis to identify new opportunities for content optimization Help optimize website content, including writing meta tags, meta descriptions, and optimizing on-page elements Support link building efforts by researching and identifying potential link opportunities Monitor and report on website performance using tools such as Google Analytics and Google Search Console Stay up-to-date with the latest trends and best practices in SEO and digital marketing Collaborate with team members on various SEO init...

I'm seeking a talented individual to enhance the design of my existing Windows software. The project involves: - Implementing a new color scheme: I'm looking to update the software's aesthetic with a fresh, modern color palette. The colors should be easy on the eyes and enhance user experience. - Improving typography: The new design should feature refined typography that is both visually appealing and easy to read. This will help to give the software a more polished and professional look. Experience in software design and an eye for modern, clean aesthetics is a must. Previous experience working with JavaScript and Angular is preferred as the software is built using these technologies. A strong understanding of UX principle...

I'm in need of an expert in software engineering, particularly in the realm of Windows game engine development using C#. The project requires the implementation of a robust physics engine into the game engine. Key Requirements: - Proficient in C# programming for Windows platform - Demonstrable experience in game engine development - Strong understanding of software engineering principles The main focus will be on integrating a physics engine into the existing framework of the game engine. If you have experience in creating 2D or 3D physics engines, that would be a huge plus. It is important that you are able to work independently and are self-driven, as the project will involve a lot of individual problem solving and innovation. Experience with mu...

I'm in need of a Junior Full Stack Engineer who is proficient with Java, with beginner level experience. The primary task will be to work on implementing Go Live for an assigned project. Ideal skills for the job: - Understanding of Java programming language - Ability to work collaboratively on a team - JSON - XML - SQL - Data Mapping Some experience with project implementation is a plus. Dedicated beginners are also welcome to take their first steps in a real project.

We have a lineup of software products. Each product is represented visually by a 3D box for marketing purposes. In order to visually communicate the relationship between the different products, our client requires you to design 1 or more (e.g., maybe 2 or 3) graphics that suggest a "cable" or "connector". We will provide the original artwork for the 3D boxes to the successful coder. The "cable(s)" or "connector(s)" should be designed in such a way, with a transparent background if necessary, that they can be "dropped into" a new marketing design project, alongside any combination of 3D boxes. *** All of the specific details and requirements of this project are carefully documented in the attached .PDF file. *...

...skilled data analyst to help me with a unique environmental study, focusing on mite survival. This main component of this work is: - Mite Survival Analysis: The primary goal is to investigate the relationship between food sources and the survival rate of mites. Your work will involve experiment design critiquing and assisting in interpreting and analysing data to assess the impact of different food sources on mite populations. I'm looking for a freelancer who has: - Experience in environmental data analysis - A background in biology, entomology, or a related field - Proficiency in data visualization tools - Excellent communication skills to present complex information effectively - A keen eye for detail and the abilit...

I am looking for an SPSS expert who can help me with running Case-Control Matching analysis on my dataset. Key Requirements: - Advanced SPSS skills, particularly in Case-Control Matching. - Ability to troubleshoot and resolve errors efficiently. Your primary role will be to help me run the Case-Control Matching analysis and ensure it is correctly applied to my data.

...of big data in the decision-making process for companies. To achieve this, I am looking for a professional writer who can conduct a detailed Case Study Analysis. This analysis will specifically delve into the application of big data in the Technology, Healthcare, and Finance industries. Key Responsibilities: - Conduct a comprehensive Case Study Analysis on the role of big data in the decision-making process within the Technology, Healthcare, and Finance sectors. - Explore and highlight the benefits that big data presents in these specific industries. - Provide a well-structured and evidence-based narrative that clearly outlines the significance of big data in modern-day decision making. Ideal Candidate: - Prior expe...

I'm looking for a programmer to help me build a visa appointment bot for personal use. Key Requirements: - This is a personal project, not for a business, and the primary goal is to automate the task of securing a visa appointment. The Bot: - The bot should be able to navigate a visa appointment booking system, select the appropriate options, and secure an appointment on my behalf. Skills and Experience: - Proficiency in bot programming and automation is crucial. - Experience with task automation and appointment booking is a plus. - Understanding of web scraping and navigation is a requirement. - Attention to detail is important to ensure the bot selects the correct options during the appointment booking process. Please get in touch if you...

As a gift basket business owner, I'm seeking an experienced Woo-commerce developer who can resolve a shipping issue on my website. The problem lies with the incorrect calculation of delivery fees if the customer's billing and shipping address differ. - The Requirement: I need the system to accurately use both the billing and shipping addresses when determining the delivery fee. The rates must differ based on the zip codes entered. - Essential Skills: Deep understanding of Woo-Commerce, PHP, Javascript, and any other relevant programming language. Prior experience in handling shipping/delivery rates customization is a plus. In your proposal, please discuss your previous similar projects and your chosen approach to handle this task.

...am looking for a highly proficient and experienced AI-expert for programming and coordination tasks in this project. Given your experience in the AI world, this role will be a perfect fit if you have: - A bachelor's degree or equivalent experience in a field relevant to this job - Previous experience in similar roles, with emphasis on AI programming languages - Strong analytical skills and propensity for problem-solving Key Responsibilities: - Communication and Coordination: You will need to work closely with the team, maintaining strong team dynamics and effective communication - AI Programming: Mastery and proficiency in AI programming languages are crucial for this role Ideal Skills and Experience: - Pro...

I urgently need a C++ developer to assist in expanding my project. Your task will be to implement a unique feature which requires capturing low-level screenshots directly from the GPU. The key responsibilities include: - Developing ...my project. Your task will be to implement a unique feature which requires capturing low-level screenshots directly from the GPU. The key responsibilities include: - Developing a new, specialized feature that captures and handles GPU screenshots. - Ensuring the smooth and efficient performance of this new feature. It's beneficial if you have prior experience with similar GPU-related tasks and a solid understanding of C++ programming, API integrations, and screenshot capture techniques. Please bid now if you believe you have the skills an...

I'm seeking a SPSS expert to help me with a comprehensive survey analysis. Key Project Details: - This will involve a full survey analysis aimed at measuring customer satisfaction specifically in relation to CSR. - Your objective will be to gain a solid understanding of how our customers perceive our CSR efforts and its impact on Customer loyalty. Ideal Skills and Experience: - Proficiency in SPSS and survey analysis. - Strong background in market research and customer satisfaction measurement. - Knowledge or experience in CSR evaluation is a definite plus. -Knowledge in Customer Loyalty.

...an in-depth sensitivity analysis of a Pressure Swing Adsorption (PSA) process for CO2 capture using zeolite 13X. Scale up a CO2 capture system from a small-scale experimental study detailed in the attached research paper to an industrial application focusing on a flue gas stream solely made up of CO2 and N2. This comprehensive investigation can be based on specific equations, data, and parameters that will be provided from a relevant paper. Duties and Responsibilities: - Understand the Base Model: Analyze the experimental study to grasp foundational models and calculations. - Industrial Sensitivity Analysis: Utilize any effective method to scale up these findings to industrial levels. - Use MATLAB, Excel, or any other tool to conduct a detailed sensitivity ...

I'm in need of an Excel expert who can assist me with data analysis, formulas, and data visualization. The project involves working with a dataset of medium size, specifically, between 1,000 - 10,000 rows. Key requirements for this role include: - Strong understanding of data analysis: The ideal candidate should have a proven track record of analyzing data, preferably in a business context. - Proficient in formulas and calculations: You should be very comfortable with advanced Excel formulas and calculations. - Data visualization skills: The ability to present data in an easily understandable and visually appealing way is crucial for this project. Specific functionalities and tools that need ...

I'm looking for a talented article writer who can help me create engaging, detailed biographies around net worth analysis. The articles will need to cover different individuals and their professional and personal journeys. Key requirements: - Ability to research and compile engaging biographical content - Experience in analyzing net worth, and presenting it in an accessible way - Strong writing skills, with the capacity to deliver both professional and personal tones - Quality sources to back up the net worth and biography analysis The ideal candidate will have a mix of a journalist's curiosity and a financial analyst's precision. This project will offer an opportunity to craft insightful pieces on successful individuals, and delve into the fin...

I'm looking for a functional implementation utilizing AWS media convert in a .NET core environment, with a specific focus on video transcoding. - Functionalities: The main functionality to be implemented is video transcoding with the target being MP4 format. - Desired Output: The desired output resolution for the transcoded videos should be 1080p. Ideal Skills and Experience: - Significant experience with AWS Media Convert - Proficient in .NET core programming - Experience with video transcoding technologies - Understanding of video formats, particularly MP4, and resolution settings.

...geothermal system for a building. Key Tasks: - Design and Analysis: You'll be tasked with designing the geothermal heating system for a building, and analyzing its effectiveness. Given that the project is at the construction stage, adherence to the project timeline and budget is essential. Current Stage: - The project is currently in the construction or execution stage. It is crucial that the engineer has experience working on geothermal projects at this stage. Specific Expertise: - Experience with geothermal heating systems for buildings is a must. The ideal candidate should have a proven track record of successfully implementing similar projects. Ideal Skills and Experience: - Proven experience in the design and analysis of ge...

...can help me extract specific data on the results of the Tokyo 2021 Paralympic Games from the official website - The data I require includes: - Athlete profiles - All the results of each competitor - Medal winners The extracted data should be presented in a CSV file format. It should be in a similar format as this dataset on the results of the Olympic games: No specific analysis is needed on the extracted data. Ideal skills and experience for this job include: - Proficiency in web scraping - Experience in data extraction - Expertise in data formatting and CSV files Your professional approach and ability to deliver accurate, complete data will be crucial. Please bid

I'm seeking a statistic analyst with a strong R background to help me analyze a questionnaire survey. The results of the analysis will need to be presented in a written report. I'm looking for a comprehensive breakdown of the data with statistical insights and interpretations. Key Requirements: - Proficient in statistical analysis with R - - Ability to provide a comprehensive breakdown of data - Strong analytical and problem-solving skills - Excellent written communication skills Your analysis will form the basis of a written report, which must include statistical data and insights. It's essential that you can translate complex data into clear, actionable recommendations. If you ha...

I'm looking for a developer with in-depth experience in creating smart contracts on the Ethereum blockchain. Key Requirements: - Develop a multisend smart contract that supports ERC20 tokens. The contract should allow for the distribution of ERC20 tokens to multiple recipients in a single transaction. - Implement pause functionality as a security feature. This is crucial to protect the contract from any potential vulnerabilities or attacks. - We would like to be able to interact with the contract if possible (on etherscan) Ideal skills and experience: - Proficiency in Solidity, the programming language used for Ethereum smart contracts. - Prior experience in developing multisend contracts and incorporating pause functionality. - Knowledge ...

I need a Python expert with an ability to cover various functionalities as per the need. The project might involve data analysis, web scraping, automation, or could be anything else as per the project requirements. The ideal candidate should have: - Expertise in Python programming and its different libraries. - Experience with data analysis, web scraping, automation. - Strong problem-solving skills. While applying, please share: - Your past work related to Python programming. - Your Python programming experience level. - Detailed proposal of how you can assist in this project.

I want a simple platform using APIs and web sockets to collect real time data and calculate the values and show in the form of heatmap using plotly heatmaps. I need 4 features. Liquidation heatmap, order book, net position heatmap and liquidation level. Please read attached requirements before sending a bid. And please quote actual amount

...seeking a skilled freelancer to automate the process of sending student data to school coordinators via WhatsApp. The task involves parsing a large Excel sheet containing student data, splitting it into smaller sheets based on schools, and sending each school's data to the corresponding coordinator's WhatsApp number. The main tasks include: Data Parsing: The freelancer will need to parse the provided Excel sheet containing student data. The data includes student names, grades, schools, coordinator names, coordinator WhatsApp numbers, and student codes. Data Splitting: The freelancer will develop a Python script to split the large Excel sheet into smaller sheets based on schools. Each smaller sheet should contain data ...