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Turk Neurosurg. 2021 Nov 10. doi: 10.5137/1019-5149.JTN.36068-21.3. Online ahead of print.

ABSTRACT

AIM: We sought to identify predictors of basilar invagination (BI) prognosis and compare diagnostic properties between logistic modeling and machine learning methods.

MATERIAL AND METHODS: We conducted a single-center retrospective study. Patients at our hospital who met the inclusion and exclusion criteria were identified between August 2015 and August 2020 for inclusion. Candidate predictors, such as demographics, clinical scores, radiographic parameters, and outcome, were included. The primary outcome was the prognosis evaluated by the change in patient-reported Japanese orthopaedic association (PRO-JOA) score. Conventional logistic regression models and machine learning algorithms were implemented. Models were compared, considering the area under the curve (AUC), sensitivity, specificity, positive and negative predictive values, and calibration curve.

RESULTS: Overall, the machine learning algorithms and traditional logistic regression models performed similarly. The postoperative cervicomedullary angle, head-neck flexion angle (HNFA), atlantodental interval, postoperative clivo-axial angle, age, postoperative clivus slope, postoperative cranial incidence, weight, postoperative HNFA, and postoperative Boogaards angle (BoA) were identified as important predictors for BI prognosis. Among the surveyed radiographic parameters, postoperative BoA was the most important predictor of BI prognosis. In the validation dataset, the bagged trees model performed best (AUC, 0.90).

CONCLUSION: Through machine learning, we have demonstrated predictors of BI prognosis. Machine learning methods did not provide too many advantages over logistic regression in predicting BI prognosis but remain promising.

PMID:35416266 | DOI:10.5137/1019-5149.JTN.36068-21.3

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Comparative Analysis Between Machine Learning Algorithms and Conventional Regression in Predicting the Prognosis of Patients with Basilar...

New Fuel Cycle integration enables organizations to capture more context from their known community members

SAN FRANCISCO, April 13, 2022--(BUSINESS WIRE)--UserTesting (NYSE: USER), a leader in video-based human insight, today announced new features as part of its quarterly product release to help companies gather human insights specifically tailored to how their business operates. Companies can now identify and customize interesting and relevant findings using their own common, corporate terminology. UserTesting has also rolled out usage management for workspaces, making it easier to plan and share testing capacity across the entire organization. Lastly, for teams that want to capture feedback from their Fuel Cycle community members, UserTesting now offers the ability to launch tests to these audiences directly from the UserTesting Human Insight Platform.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20220413005396/en/

Customize UserTesting Intent Path labels to better match the terminology used within organizations. (Graphic: Business Wire)

New features in this product release:

Customize auto-generated insightsUserTestings insight customization allows customers to provide feedback on auto-generated, intelligent insights by adding their own custom terminology. These insights are powered by machine learning and help surface intent, sentiment, keywords, and other key moments in a video. Customization is persistent and applied to future tests on similar experiences, helping to establish a common language for insights across the organization. This makes identifying key moments of interest faster and easier, and post-test analysis more efficient.

New integration with Fuel CycleUserTesting has expanded the ability for companies to access their own customer communities with a new Fuel Cycle integration. This integration allows companies to more efficiently reach and get feedback from their own customers that are already established via Fuel Cycle communities. Users can distribute tests from the UserTesting Human Insight Platform directly to Fuel Cycle community members, creating an easy and efficient way to capture feedback from these audiences.

Story continues

Usage management for workspacesWith usage management for workspaces, organizations can manage testing capacity across their enterprise more easily and efficiently. Customers can now expand the use of the UserTesting Human Insight Platform into new departments, groups, and lines of business while effectively managing testing capacity.

"UserTesting is continuously innovating its overall platform experience to bring greater efficiencies to how organizations collect, access, and take action on customer insights," said Kaj van de Loo, CTO at UserTesting. "The easier we can make it for organizations to capture these types of insights, the greater the customer intuition they can buildand its those companies that understand what is driving their customers behaviors that will be the market leaders."

About UserTestingUserTesting (NYSE: USER) has fundamentally changed the way organizations get insights from customers with fast, opt-in feedback and experience capture technology. The UserTesting Human Insight Platform taps into our global network of real people and generates video-based recorded experiences, so anyone in an organization can directly ask questions, hear what users say, see what they mean, and understand what its actually like to be a customer. Unlike approaches that track user behavior then try to infer what that behavior means, UserTesting reduces guesswork and brings customer experience data to life with human insight. UserTesting has more than 2,300 customers, including more than half of the worlds top 100 most valuable brands according to Forbes. UserTesting is headquartered in San Francisco, California. To learn more, visit http://www.usertesting.com.

View source version on businesswire.com: https://www.businesswire.com/news/home/20220413005396/en/

Contacts

UserTesting, Inc.Chris Halcon415-699-0553chalcon@usertesting.com

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UserTesting Announces New Capabilities that Provide Organizations with More Customizable and Powerful Machine Learning-Driven Insights - Yahoo Finance

A team of University of Iowa researchers received $800,000 from Amazon and the National Science Foundation to limit the discriminatory effects of machine learning algorithms.

Larry Phan

University of Iowa researcher Tianbao Yang seats at his desk where he works on AI research on Friday, Aril 8, 2022.

University of Iowa researchers are examining discriminative qualities of artificial intelligence and machine learning models, which are likely to be unfair against ones race, gender, or other characteristics based on patterns of data.

A University of Iowa research team received an $800,000 grant funded jointly by the National Science Foundation and Amazon to decrease the possibility of discrimination through machine learning algorithms.

The three-year grant is split between the UI and Louisiana State University.

According to Microsoft, machine learning models are files trained to recognize specific types of patterns.

Qihang Lin, a UI associate professor in the department of business analytics and grant co-investigator, said his team wants to make machine learning models fairer without sacrificing an algorithms accuracy.

RELATED: UI professor uses machine learning to indicate a body shape-income relationship

People nowadays in [the] academic field ladder, if you want to enforce fairness in your machine learning outcome, you have to sacrifice the accuracy, Lin said. We somehow agree with that, but we want to come up with an approach that [does] trade-off more efficiently.

Lin said discrimination created by machine learning algorithms is seen disproportionately predicting rates of recidivism a convicted criminals tendency to re-offend for different social groups.

For instance, lets say we look at in U.S. courts, they use a software to predict what is the chance of recidivism of a convicted criminal and they realize that that software, that tool they use, is biased because they predicted a higher risk of recidivism of African Americans compared to their actual risk of recidivism, Lin said.

Tianbao Yang, a UI associate professor of computer science and grant principal investigator, said the team proposed a collaboration with Netflix to encourage fairness in the process of recommending shows or films to users.

Here we also want to be fair in terms of, for example, users gender, users race, we want to be fair, Yang said. Were also collaborating with them to use our developed solutions.

Another instance of machine learning algorithm unfairness comes in determining what neighborhoods to allocate medical resources, Lin said.

RELATED: UI College of Engineering uses artificial-intelligence to solve problems across campus

In this process, Lin said the health of a neighborhood is determined by examining household spending on medical expenses. Healthy neighborhoods are allocated more resources, creating a bias against lower income neighborhoods that may spend less on medical resources, Lin said.

Theres a bad cycle that kind of reinforces the knowledge the machines mistakenly have about the relationship between the income, medical expense in the house, and the health, Lin said.

Yao Yao, UI third-year doctoral candidate in the department of mathematics, is conducting various experiments for the research team.

She said the importance of the groups focus is that they are researching more than simply reducing errors in machine learning algorithm predictions.

Previously, people only focus on how to minimize the error but most time we know that the machine learning, the AI will cause some discrimination, Yao said. So, its very important because we focus on fairness.

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Amazon awards grant to UI researchers to decrease discrimination in AI algorithms - UI The Daily Iowan

Now landing your favorite ML job at Tesla might be closer than you think! Read to learn more.

If working at Tesla is one of your dream jobs then heres your chance. Tesla is hiring artificial intelligence and machine learning engineers and if you think you have done exceptional work in software, hardware, or AI then you may directly apply with your CV by visiting the official Tesla website. While you may be wondering what qualifies to be called exceptional work then the CEO, Elon Musk himself has provided a tip. In one of his tweets, Musk said, As always, Tesla is looking for hardcore AI engineers who care about solving problems that directly affect peoples lives in a major way.

Tesla has scope for machine learning engineers who are interested in working in developing Full Self-Driving (FSD) chips, Dojo systems, Neural Networks, Autonomy Algorithms, and coding. If given a chance you may be part of the Tesla Bot project as well. In another tweet, Elon Musk clarified that he is fine with hiring people without AI background too. A background in AI is not needed, just exceptional skill in software or computer design, he said. On the other hand, the Tesla website job posting has described that the company is looking for mechanical, electrical, controls, and software engineers to help leverage its AI expertise beyond the vehicle fleet.

For hardcore coders, Tesla wants engineers who can build Autopilot software foundations up from the lowest levels of the stack, tightly integrating with Teslas custom hardware. The company aims to Implement super-reliable bootloaders with support for over-the-air updates and bring up customized Linux kernels. It wants the ML engineers to write fast, memory-efficient low-level code to capture high-frequency, high-volume data from the sensors, and to share it with multiple consumer processes without impacting central memory access latency or starving critical functional code from CPU cycles.

Another special job related to machine learning in Tesla is Autopilot Simulation Deep Learning Engineers. Autopilot is of critical importance to Teslas mission. It is safer, makes driving more enjoyable, and will ultimately deliver on the promise of self-driving cars. As a member of Teslas Autopilot Simulation team, you will be in a unique position to accelerate the pace at which Autopilot improves over time. The Simulation team realizes these goals through generating synthetic datasets for neural network training, building tools that enable Autopilot software developers to perform virtual test drives instead of real ones, and through testing all Autopilot code changes and software releases for regressive behavior.

As an Autopilot Simulation Deep Learning Engineer, you will contribute to the development of Autopilot simulation by enabling and accelerating the creation of photorealistic 3D scenes through neural rendering, neural animation, and scene/object reconstruction. You will be at the cutting edge of deep learning applications and will train neural networks on a cluster in large-scale distributed settings as Tesla has one of the biggest training clusters in the world. You will have tremendous reach and autonomy, with an exciting opportunity to impact Teslas goal of full self-driving and its mission to accelerate the worlds transition to sustainable energy. As the machine learning engineer, you will be a creative self-starter with an ability to self-assign projects across different areas of the Autopilot team. You will also have the opportunity to identify gaps between real and simulated environments, and then you will get to close those gaps through state-of-the-art machine learning/deep learning methods.

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Want to Land Your Dream ML Job at Tesla? Here's How? - Analytics Insight

Swiss Re, in collaboration with MachineHack, successfully completed the Machine Learning Hackathon held from March 11th to 28th for data scientists and ML professionals to predict accident risk scores for unique postcodes. The end goal? To build a machine learning model to improve auto insurance pricing.

The hackathon saw over 1100+ registrations and 300+ participants from interested candidates. Out of those, the top five were asked to participate in a solution showcase held on the 6th of April. The top five entries were judged by Amit Kalra, Managing Director, Swiss Re and Jerry Gupta, Senior Vice President, Swiss Re who engaged with the top participants, understood their solutions and presentations and provided their comments and scores. From that emerged the top three winners!

Lets take a look at the winners who impressed the judges with their analytics skills and took home highly coveted cash prizes and goodies.

Pednekar comes with over 19 years of work experience in IT, project management, software development, application support, software system design, and requirement study. He is passionate about new technologies, especially data science, AI and machine learning.

My expertise lies in creating data visualisations to tell my datas story & using feature engineering to add new features to give a human touch in the world of machine learning algorithms, said Pednekar.

Pednekars approach consisted of seven steps:

For EDA, Pednekar has analysed the dataset to find out the relationship between:

Image: Rahul Pednekar

Image: Rahul Pednekar

Here, Pednekar merged Population & Road Network datasets with train using left join. He created Latitude and Longitude columns by extracting data from the WKT columns in Roads_network.

He proceeded to

And added new features:

Pednekar completed the following steps:

Image: Rahul Pednekar

Image: Rahul Pednekar

Pednekar has thoroughly enjoyed participating in this hackathon. He said, MachineHack team and the platform is amazing, and I would like to highly recommend the same to all data science practitioners. I would like to thank Machinehack for providing me with the opportunity to participate in various data science problem-solving challenges.

Check the code here.

Yadavs data science journey started a couple of years back, and since then, he has been an active participant in hackathons conducted on different platforms. Learning from fellow competitors and absorbing their ideas is the best part of any data science competition as it just widens the thinking scope for yourself and makes you better after each and every competition, says Yadav.

MachineHack competitions are unique and have a different business case in each of their hackathons. It gives a field wherein we can practice and learn new skills by applying them to a particular domain case. It builds confidence as to what would work and what would not in certain cases. I appreciate the hard work the team is putting in to host such competitions, adds Yadav.

Check the code here.

Rank 03: Prudhvi Badri

Badri entered the data science field while pursuing a masters in computer science at Utah State University in 2014 and had taken classes related to statistics, Python programming and AI, and wrote a research paper to predict malicious users in online social networks.

After my education, I started to work as a data scientist for a fintech startup company and built models to predict loan default risk for customers. I am currently working as a senior data scientist for a website security company. In my role, I focus on building ML models to predict malicious internet traffic and block attacks on websites. I also mentor data scientists and help them build cool projects in this field, said Badri.

Badri mainly focused on feature engineering to solve this problem. He created aggregated features such as min, max, median, sum, etc., by grouping a few categorical columns such as Day_of_Week, Road_Type, etc. He built features from population data such as sex_ratio, male_ratio, female_ratio, etc.

He adds, I have not used the roads dataset that has been provided as supplemental data. I created a total of 241 features and used ten-fold cross-validation to validate the model. Finally, for modelling, I used a weighted ensemble model of LightGBM and XGBoost.

Badri has been a member of MachineHack since 2020. I am excited to participate in the competitions as they are unique and always help me learn about a new domain and let me try new approaches. I appreciate the transparency of the platform sharing the approaches of the top participants once the hackathon is finished. I learned a lot of new techniques and approaches from other members. I look forward to participating in more hackathons in the future on the MachineHack platform and encourage my friends and colleagues to participate too, concluded Badri.

Check the code here.

The Swiss Re Machine Learning Hackathon, in collaboration with MachineHack, ended with a bang, with participants presenting out-of-the-box solutions to solve the problem in front of them. Such a high display of skills made the hackathon intensely competitive and fun and surely made the challenge a huge success!

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Meet the winners of the Machine Learning Hackathon by Swiss Re & MachineHack - Analytics India Magazine