Online machine learning jobs jobs

I am looking for an advanced AI expert who is proficient in Python to help me understand and manipulate a developed Python package on a tutoring basis. The link of the package is: I am interested in the cylinder problem here: Key Responsibilities: The tutor should help me to make changes in the code, track the flow of the data, know the dimensions of the data, debug errors that I may encounter, and how to create more figures as well. Level of Expertise: Advanced. It's important that the tutor is proficient in AI and Python, and can guide me through the learning process at an advanced level.

I'm urgently seeking a skilled graphic designer to help expand my skill set. The project involves learning the basics of graphic design and I'm particularly interested in incorporating Java into my work. Key Requirements: - Proficiency in graphic design - Solid understanding of Java - Ability to provide clear, concise explanations for learning purposes The ideal freelancer for this project should have experience in both graphic design and Java. A background in teaching or tutoring could also be beneficial. I need someone who can effectively communicate complex technical information in a way that is easy to understand and apply. Please only apply if you can start immediately, as I'm looking to complete this project as soon as possible. I'm open to discu...

Budget is max $350. so don't ask me. I will provide end point and key info, I have needs for 4 things - 1) E* Trade API integration (take data from them). - Easy if you know API/OAuth - 2) Text to Voice Conversion. - This is where you skills will be. 3) Emailing file.- Easy 4) Learning from me about financial lingo. = time sensitive if you can not work next 7-9 days no need to bid. I need this project to be over by 4/28/2024.

I'm in need of a skilled Machine Learning 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: ...

I'm seeking expertise to develop an AI solution addressing specific communication challenges...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 clear and effective communication. Please provide examples of similar past projects while sub...

You must be a internet Research Expert. You must bid within my budget, I will not consider bids higher than my posted budget. I want the research done in 2 days. You must prove to me why you are a professional researcher. I'm in need of research about the most popular product videos online at a specific source. Ideal skills and experiences for this job include: - Extensive knowledge and familiarity with app stores and popular mobile apps. - Strong research skills. - Understanding of the app industry and mobile games. - Ability to deliver this information in an easy-to-read and understand format. Please note: I'll only consider bids from freelancers who demonstrate they've fully understood the project and can deliver as per my requirements. I will own the copyright...

I'm seeking a skilled HubSpot professional to provide me with training. Although I'm a beginner, I'm eager to get up to speed on Marketing and Sales Hubs. My primary goals for using HubSpot are to enhance our lead generation, customer relationship management, and sales pipeline management. Key Requirements: - Stro...Strong experience with HubSpot, specifically Marketing and Sales Hubs. - Prior training experience, especially with beginners. - Ability to tailor the training to my goals. Your responsibility will be to provide clear, engaging, and actionable instruction to help me utilize Hubspot effectively. You should be patient, good at explaining complex concepts simply, and able to adapt to my pace and learning style. A background in marketing automation and CRM...

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.

I'm in need of a freelancer skilled in Windows server administration and virtualization technology, specifically VMware. Your task will be to set up a VPN server on my existing Windows virtual machine. Key tasks include: - Installing and configuring OpenVPN on the Windows server - Ensuring the VPN setup is secure and functions properly You should have deep knowledge and experience with Windows Server, VMware, and OpenVPN protocols. I'm expecting the project to be done efficiently and timeously without compromising on the server's security measures.

...of Seamless models. Feel free to play around with the notepad. Tutorial link: Request to install the programme from GitHUB: Seamless is a family of artificial intelligence models that enable more natural and authentic communication across languages. SeamlessM4T is a massive, multilingual, multimodal machine translation model supporting around 100 languages. SeamlessM4T forms the basis of SeamlessExpressive, a model that preserves elements of prosody and voice style across languages, and SeamlessStreaming, a model that supports simultaneous translation and streaming ASR for around 100 languages. SeamlessExpressive and SeamlessStreaming have been combined into Seamless, a unified model that includes

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 models. - Familiarity with designing ar...

This is a personal project questing for an adept software engineer or system administrator to create a multiboot machine. Ideally, this machine will be configured with both Windows 10 ISO and Ubuntu 22.04. However, instead of the conventional Grub, we will utilize the Burg Bootloader with the Metro theme. This is a technically demanding task requiring the following: - Profound knowledge in Operating System installations. - Expert ability to setup multiboot configurations. - Experience with the Burg Bootloader is highly desirable. - Familiarity with the Metro theme. The purpose of the multiboot configuration is to provide a platform where I can experiment with different operating systems. Please ensure the optimal setup is achieved such that I can independently manage the ...

I'm looking for an AWS expert who can set up my profile in Mumbai with 1000 virtual central processing units (vcpus). This highly specific task requires excellent knowledge of Amaz...up my profile in Mumbai with 1000 virtual central processing units (vcpus). This highly specific task requires excellent knowledge of Amazon Web Services. Key tasks include: * Setting up EC2 instances specifically optimized for compute. * Ensuring the configuration supports the primary application of machine learning. You should have a deep understanding of AWS, specifically EC2 instances, with a proven track record of setting up compute optimized environments tailored for machine learning. Prior experience with large scale setup (1000+ vcpus) would be a distinct advantage ...

...in search of a skilled professional in Machine Learning to create an image recognition model tailored for hand gestures and symbols. The project will be entitled Real Time Sign Language Translator and will translate America Sign language to Recognisable alphabets and display them on the screen to be able to form words. Key Requirements: - The model should be optimized for high accuracy, exceeding 95% in recognition of the specified hand symbols and gestures. - It should be able to differentiate among various hand symbols and gestures, recognizing them accurately. Ideal Skills and Experience: - Proven experience in developing and training image recognition models, particularly for recognizing hand gestures. - Proficiency in working with machine learning fram...

I'm looking for a qualified English teacher specializing in Business English to help a student at an intermediate level. The lessons should be delivered online. The right professional for this job should have: - Proven experience in teaching English, particularly Business English - Proficiency in online teaching techniques - Strong understanding of intermediate-level English - Ability to customize lessons to suit the student's needs - Patience and good communication skills If this sounds like you, I look forward to hearing from you.

Construct a blog post for students based on the concepts you have learned about throughout this semester is either this class or another course at MPTC. Use examples from The Learning Scientists BlogsLinks [ ] to an external site. to guide your approach. Each paragraph within the blog should have a clear topic sentence, body, and conclusion with transitions to move from one idea to the next. You will complete a rough draft and a final draft for this assessment. Content: You should focus on the information that you think would be most useful to students. You have two options: You can go for breadth, by including material from multiple topics (weeks) covered in the class; OR You can go for depth and include only material from 1 specific topic covered

Company Overview: Join a leading firm dedicated to excellence and innovation. With a commitment to professionalism and growth, we offer our team a dynamic work environment where their contributions are valued and their professional development is supported. Job Description: We are seeking a ski...and comprehensive benefits • Opportunities for professional development and career advancement. • Flexible work hours and remote work available. • Supportive team environment and leadership committed to your professional growth. How to Apply: Please submit your resume and a cover letter outlining your qualifications and why you are the best candidate for the role We look forward to learning how your skills and experiences will contribute to the strength and ...

I'm in need of an experienced web developer to create an interactive multiple choice exam website. This platform is intended to be a valuable resource for both educators and students alike. Key Featu...dashboard: Both users and admins should have access to a comprehensive dashboard for tracking user progress and other key performance metrics. Ideal Skills: - Proficiency in web development, particularly with creating interactive websites - Experience with user account management and authentication - Prior work with dashboard development and data visualization - A background in education or e-learning platforms would be a plus This project has a potential for further growth and development down the line, making it a great opportunity for a skilled developer looking for a lon...

Hello, I want to create a Car Rental website with online reservation.

Integrated Al-Quran Education System Development Brief: Create a digital platform for Al-Quran education that features student progress tracking and transparent reporting. The system will utilize PHP Laravel, Flutter or .NET Core, with MySQL/MariaDB on a Linux server. Key Features: User registration for different roles: Admins, Teachers, Guardians, and Students. Payment options both online and offline. Attendance and performance monitoring tools. Video tutorials for Quranic concepts. Requirements: Experience in educational technology. Quick turnaround and budget adherence. Deliverables: Complete web application. User guide and maintenance support. Proposal Needs: Approach, timeline, and cost.

...updates and troubleshooting. Required Skills: Proficiency in web development technologies (e.g., HTML, CSS, JavaScript, and a server-side framework like Node.js or Django). Experience with Python, particularly in data handling (pandas) and automation scripts. Strong background in API integration and management. Experience in handling databases (e.g., MySQL, MongoDB). Familiarity with AI and machine learning frameworks or APIs (experience with image generation APIs is a plus). Good understanding of cloud services (AWS, Azure, or Google Cloud) for deploying and scaling applications. Ability to design user interfaces with attention to user experience and responsiveness. Qualifications: Bachelor’s degree in Computer Science, Information Technology, or related field. Pr...

As the main driver of this project, I require a senior machine learning engineer who specializes in working on training Stable Diffusion models. The ideal candidate must have: The ultimate aim is superior task performance, specifically in the realm of Text2Image. We are aiming to improve our system’s capabilities and exceed our current benchmark. Your role will be pivotal in us achieving this. If you are confident in your ability to develop models that transform the performance capabilities of challenging Text2Image tasks, then I invite you to bid.

Physical testing is to automated where test paper to be conducted online on computer lab. a Software is to be required for this purpose which has following functionality : 1. Preparation of Question bank (MCQ as well as descriptive.) 2. Preparation of Question paper based on question bank (questions to be selected randomly according to the weightage, level of difficulty etc.) 3. Showing result of MCQ part. 4. result preparation etc.

I require an experienced copywriter who specializes in crafting engaging, informative content for PowerPoint presentations. Skills and Experience: - Copywriting experience specifically for PowerPoint presentations - Ability to compose concise, informative, and engaging content - Familiarity with creating content that facilitates learning and understanding The project involves enhancing an old content for a PowerPoint presentation intended for information delivery. An understanding of structured content delivery would be especially beneficial. The ideal candidate will be able to effectively distill complex information into easy-to-understand text.

I'm looking for an experienced cold caller who can efficiently make appointment setting calls on a gl...appointment setting calls on a global scale. The ideal candidate must have: - Proven track record in cold calling and appointment setting - Understanding and experience in dealing with international markets - Sound knowledge of the online products industry The main responsibilities include: - Identifying and targeting global potential leads - Making effective cold calls to these international prospects - Successfully setting appointments with these leads Skills and Experience required: * Cold calling experience * Excellent communication skills * Knowledge of the online product market. Your hard work will broaden our global presence and help us venture successf...

Pre-teens are a curious bunch, teetering between childhood wonder and teenage independence. Museums, with their vast collections and interactive exhibits, can be the perfect playground to ignite this curiosity and equip them with valuable life skills. But how do we transform a museum visit from a passive stroll to an active learning experience? This blog delves into life skills activities that pre-teens can engage in at museums, turning a casual outing into a springboard for future success. Unleashing the Inner Communicator: Debate Club in the Dioramas: Museums often have dioramas depicting historical events or ecosystems. Divide your pre-teens into groups and assign them opposing viewpoints related to the scene. Encourage them to research and prepare arguments based on the exhibi...

I looking for someone who will create an online casino for me, more details in private

...native-level fluency in Japanese or have a C1 certificate of Japan - Your English proficiency is fluent - Your laptop meets requirements: RAM from 6 GB, Windows 10+ or iOS - You have stable internet connection - You are self-organised, can work without supervision Mindy Teams is an international outsourcing company, a European leader in the field of Data Annotation for Artificial Intelligence and Machine Learning for over 10 years. Several of our clients belong to GAFAM and Fortune500 lists. We have a team of 2000 professionals. We are waiting for you to join our team....

As an important player in the pharmaceutical industry, we are seeking an efficient and resourceful AI/ML engineer who can harb...modeling - Developing precise and efficient AI algorithms - Integrating existing systems with developed ML models Our project predominantly concentrates on temperature-sensitive medications, which adds a layer of vitality to the precision and accuracy of our operations. Hence, the ideal candidate should have a background in pharmaceutical logistics or healthcare and a solid command over machine learning algorithms. With the potential of AI/ML, we aim to escalate the accuracy in the tracking of our shipments which is paramount to our vision of providing superior service. Therefore, proven experience in improving logistics or supply chain efficiency...

...Language Tutor & Coach Needed North & North West Tasmania - Australia I'm searching for an experienced language trainer to help enhance language skills. From the initial stages of learning a new language, for the total beginner, requiring a skilled tutor who can guide through the more complex aspects of the language Adaptation and versatility with teaching methods would be beneficial. Skills & Experience: - Proven experience as a language tutor. - Patience and excellent communication skills. - Ability to create a diverse and inclusive learning environment. - Capacity to tailor lessons to my unique learning style. **Requirements:** - You should have an established record of successful language teaching. - While language proficiency is impo...

...deep understanding of EEG data, Autism, and Deep Learning. Key Project Details: - Word Count: 7000-10000 words - Objective: To write an academic paper based on our proposed method and offered results Your main responsibilities for this project will include: - Crafting a comprehensive academic paper on the relationship between EEG data, Autism, and Deep Learning. - Writing a literature review that underpins our proposed method and results. - Ensuring the paper adheres to academic standards, including proper citation and referencing. Ideal Skills and Experience: - Proven track record in academic writing in the EEG data, Autism, and Deep Learning domain. - Strong understanding of academic research methodologies. - Knowledge of deep learning models and their ...

I'm in need of a WordPress full stack developer who can customize a WordPress theme for me. I'm looking for a professional and...WordPress theme customization - Strong understanding of UI/UX design principles - Able to work effectively to deliver a high-quality, professional website You will need to add categories to the candidates and job pages in the filter menu. These will also need to be linked to the naviagtion menu and sign-up forms including jobs. this is what we need: Candidates ○ Age Range (eg) ■ Yr 7+ ■ Yr9 + ■ Yr 11+ ■ Yr 13+ ■ Undergraduate ■ Graduate ■ School/College Leaver = Jobs ○ Duration (eg( ■ Full time ■ Part-time ■ Temporary ■ Project Please note that a demonstration of past similar projects or a portfolio will highly influence our decision...

I'm in need of a WordPress full stack developer who can customize a WordPress theme for me. I'm looking for a professional and...WordPress theme customization - Strong understanding of UI/UX design principles - Able to work effectively to deliver a high-quality, professional website You will need to add categories to the candidates and job pages in the filter menu. These will also need to be linked to the naviagtion menu and sign-up forms including jobs. this is what we need: Candidates ○ Age Range (eg) ■ Yr 7+ ■ Yr9 + ■ Yr 11+ ■ Yr 13+ ■ Undergraduate ■ Graduate ■ School/College Leaver = Jobs ○ Duration (eg( ■ Full time ■ Part-time ■ Temporary ■ Project Please note that a demonstration of past similar projects or a portfolio will highly influence our decision...

...zufriedene Mutter (Since my son started training, his self-confidence has improved tremendously. He now appears much more confident and has also become more assertive at school. It's incredible to see how he has flourished!" - A satisfied mother) - Design should use vibrant, positive colors like blue or green. **Sheet 2: Development of Defense Skills** - Title: "Lernen, sich zu verteidigen" (Learning to Defend Yourself) - Main Elements: Images of defense techniques (dummy placeholders), safety aspects, short quotes. - Quote: "Mein Sohn wurde früher oft geärgert, aber seit er Kampfsport trainiert, hat er gelernt, sich zu behaupten. Letztens konnte er eine unangenehme Situation in der Schule sicher und selbstbewusst lösen, ohne Gewalt anzuwe...

We are developing machine learning software aimed at predicting space debris collisions and enhancing mission planning. The initial phase of this project requires a meticulous approach to data preparation, which is critical for the success of our subsequent modeling efforts. The challenge lies in acquiring as much relevant data as possible for accurate predictions. Project Scope: 1. Preparation Stage: The freelancer will be responsible for identifying and researching all available sources of space debris data, both free and paid. This includes a comprehensive evaluation of data providers to ensure the data's relevance and quality. The output at this stage will be an Excel table summarizing the research, which will include provider names, links to data or registration, ...

I need a Tic Tac Toe game implemented in C++. The game should support local multiplayer,...should support local multiplayer, with a simple text-based (console) graphical interface. Key Requirements: - C++ programming skills - Experience with game development, particularly Tic Tac Toe - Ability to create a basic text-based user interface The game should be designed for Windows platform. The core gameplay should be solid and allow for two players to play against each other on the same machine. The graphical aspect should be simple and intuitive, with text-based display. If you're an experienced C++ developer with a knack for game programming, this project could be a fun and quick one for you to pick up. Please provide examples of your previous game development work alongside...

As a client, I'm in need of an experienced mobile app developer who can help me deploy a cross-platform app. The primary goal of the app is to facilitate online food delivery, catering to users across different platforms. Key Features: - User Registration and Login: The app should allow users to create accounts and log in securely, with options to save their preferences and order histories. - Restaurant Selection and Menu Browsing: Users should be able to browse through a list of restaurants, view their menus, and select items for their orders. - Order Tracking and Delivery Status Updates: The app must provide real-time order tracking and push notifications for delivery status updates, ensuring transparency and convenience for the users. Ideal Skills and Experience: - Profici...

I'm searching for a skilled web developer who can create a Learning Management System (LMS). The primary purpose of this platform is to deliver online, self-paced courses. Key Details: - The LMS needs to support the seamless delivery of online, self-paced courses. - The system doesn't require integration with any other systems at this moment. This is negotiable in the future, though. Ideal Skills & Experience: - Proficiency in e-learning platforms and LMS development. - Understanding of online pedagogy and self-paced learning environments. - Strong experience in web development and course content management.

Translators for Spanish jobs.

I am in need of a proficient administrator to offer a hand in various tasks, namely data entry, email management, and document organization. As all these tasks will be performed remotely, a hig...high efficiency and accuracy in task management. - Data entry: Must have attention-to-detail and ability to interpret data correctly. - Email management: Experience with a broad spectrum of email platforms and management tools. - Document organization: Skills in file management software and cloud services are essential. The ideal candidate should have sufficient experience in administrative jobs performed remotely, coupled with excellent digital literacy. This encompasses expertise in office software (Word, Excel, etc.), data entry software, and proficiency in email and document managem...

I am seeking for a Spanish translator to translate PDF files from English to Spanish without using translating machine or Google translator.

I am in need of an experienced PMP tutor. - **Experience Level:** Advanced level of understandin...in need of an experienced PMP tutor. - **Experience Level:** Advanced level of understanding in PMP is a must to ensure the quality and efficacy of the tutoring sessions. - **Learning Materials:** To make the tutoring program comprehensive, I'd like it to include: - Video Tutorials - Practice Quizzes - Interactive Exercises - **Tutoring Frequency:** I require tutoring three times a week to keep my learning pace consistent and on track. Ideal candidates for this project should have a deep knowledge of PMP concepts and have a seasoned track record of tutoring. You should be able to tailor the learning materials to an advanced level and provide structured...

I'm a Senior Sales Operations Analyst at a top online advertising campaign management firm and I urgently require a professional skilled in Tableau. Your task will be to create a comprehensive dashboard that assists me in analyzing and strategizing our sales operations. Key Deliverables: - Present crucial data points including daily ad impressions and conversion rates. - Display key performance indicators such as Click-through rate (CTR), Cost per acquisition (CPA), and Return on ad spend (ROAS). - Use different visualization formats like line charts, bar charts, and pie charts to represent the information. Ideal Skills: - Proficiency in Tableau - Strong analytical skills - Experience in developing dashboards with extensive understanding of marketing and sales KPIs. Please ...

I am seeking assistance with submitting my Job applications on LinkedIn. I am interested in a full-time position in the technology field, specifically as a Marketing Technology/Data Analyst/Digital Analytics Ideal Skills and Experience: • Familiarity with data analysis field, job requirements and responsibilities. • Proficient in following the Standard Operating Procedure for applying jobs. • Experience in job application procedures on LinkedIn within the Tech industry will be highly favored. Your role will involve; 1. tailoring my resume as per job description (access to ChatGPT 4 Premium will be provided). 2. Able to submit around 50 job applications per day × 6 days a week that I will be shorlisting (takes around 3 hours at a stretch)

...adult learning module [Sample section only] using Chameleon Creator. The module is about a small business related topic and will be deployed on a website. Key Requirements: - Target Audience: The module is designed for adults working in local government, so the content should be relevant and engaging for this group. - Interactivity: I'm looking for a moderate level of interactivity, specifically the embedding of case studies broken into segments, content sections, and quizzes. - Platform: The learning module should be developed for deployment on a website using Chameleon Creator as the authoring tool. Ideal Experience: - Proficiency in e-learning module development using Chameleon Creator - Experience in creating engaging and interactive content - Prior exper...

I'm seeking a knowledgeable professional to create an engaging, high-quality video course about technology. The course should be tailored to fit learners who already grasp the basic principles of software development and technology are prepared to move into more intermediate techniques and principles. Course Content ...prior experience in teaching or tutoring at this level would be beneficial. Certifications and Skills Needed • Test-driven development • Knowledge in various software development languages (PHP, HTML, REACT, Java, Python, C++, etc.) • Excellent technical writing and communication skills • Experience in creating educational content, particularly video courses • A good understanding of the e-learning industry • Excellent video pr...

I require an expert in WordPress SEO with a focus on both on-page and off-page optimization. The primary goal of this project is to configure my website for optimal search engine performance and user engagement. - The key tasks of this project include: - On-page optimization: Reviewing and refining content, meta tags, and internal linking strat...understanding of user engagement strategies - Expertise in configuring WordPress SEO components like the permalink structure, XML sitemap, and file. I look forward to receiving proposals from freelancers who can deliver tangible results in optimizing my WordPress website for search engines and user engagement. WHEN YOU CONTACT ME TALK TO ME ABOUT YOURSELF In few words, SHOW ME YOUR BEST JOBS AND RESULTS, otherwise I won't an...

...Trading: The bot should trade using complex algorithms and machine learning trading techniques The bot should be specifically designed to work with the trading platform. The innovative trading bot should possess advanced capabilities to identify new coins and snipe within milliseconds and utilize unique trading algorithms and strategies to ensure multiple profitable entry and exit points and take advantage of the trading environment. - Quantitative complex algorithms: The bot should be able to crunch numerical data to identify trading opportunities. - Should be user friendly interface or app and work flawlessly via mobile device or computer. Ideal candidates should have proven experience in bot development, machine learning, and quantitative algorithm cr...

I'm seeking a highly skilled iOS developer who specializes in Moodle app customization. Your task is to conduct a seamless setup of the Moodle app on my machine, ensuring it operates flawlessly on the iOS simulator. Your responsibilities include: - Understanding my requirements and applying basic customization to the app: including the logo, color scheme, and fonts. - The version of Moodle in my current use: Moodle 3.2 Given that I have a strict deadline for the project, proven experience in Moodle app customization, and the ability to meet deadlines, is strongly preferred. Your ability to communicate clearly and promptly is also critical for the success of this project, so I'm looking forward to proper problem-solving discussions if they arise.

2 data gathering and 3 dynamic excel model and part 6 evaluation performant and learning have a second excel with ways to improve