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### Hypothesis Testing- Test of Mean, Variance, Proportion

Hypothesis testing is used to determine whether the assumption about the value of the population parameter should be rejected or not. There are different types of hypothesis testing and different approaches to perform hypothesis testing. Let's learn about this in detail in this article. The null hypothesis is always formulated in such a way that the assumption is true. If we fail to reject the null hypothesis means no follow-up action is required.

### A New Paradigm of Threats in Robotics Behaviors

Robots applications in our daily life increase at an unprecedented pace. As robots will soon operate "out in the wild", we must identify the safety and security vulnerabilities they will face. Robotics researchers and manufacturers focus their attention on new, cheaper, and more reliable applications. Still, they often disregard the operability in adversarial environments where a trusted or untrusted user can jeopardize or even alter the robot's task. In this paper, we identify a new paradigm of security threats in the next generation of robots. These threats fall beyond the known hardware or network-based ones, and we must find new solutions to address them. These new threats include malicious use of the robot's privileged access, tampering with the robot sensors system, and tricking the robot's deliberation into harmful behaviors. We provide a taxonomy of attacks that exploit these vulnerabilities with realistic examples, and we outline effective countermeasures to prevent better, detect, and mitigate them.

### Serendipity Brands is launching a 'Friends' ice cream pint, plus 3 movie-themed lines

Learn how to whip up one of Serendipity 3's iconic desserts. Serendipity's new ice cream flavor will be there for you. At least it will be if you're a "Friends" fan who can't resist the brand's newest pint, which takes inspiration from the hit '90s TV show. Serendipity Brands announced it created a Central Perk Coffee Almond Fudge ice cream in partnership with Warner Bros. Consumer Products, according to a press release issued Tuesday. The Central Perk Coffee Almond Fudge comes in a purple carton and features the show's iconic logo and orange couch.

### Approximation Algorithms for Active Sequential Hypothesis Testing

In the problem of active sequential hypotheses testing (ASHT), a learner seeks to identify the true hypothesis $h^*$ from among a set of hypotheses $H$. The learner is given a set of actions and knows the outcome distribution of any action under any true hypothesis. While repeatedly playing the entire set of actions suffices to identify $h^*$, a cost is incurred with each action. Thus, given a target error $\delta>0$, the goal is to find the minimal cost policy for sequentially selecting actions that identify $h^*$ with probability at least $1 - \delta$. This paper provides the first approximation algorithms for ASHT, under two types of adaptivity. First, a policy is partially adaptive if it fixes a sequence of actions in advance and adaptively decides when to terminate and what hypothesis to return. Under partial adaptivity, we provide an $O\big(s^{-1}(1+\log_{1/\delta}|H|)\log (s^{-1}|H| \log |H|)\big)$-approximation algorithm, where $s$ is a natural separation parameter between the hypotheses. Second, a policy is fully adaptive if action selection is allowed to depend on previous outcomes. Under full adaptivity, we provide an $O(s^{-1}\log (|H|/\delta)\log |H|)$-approximation algorithm. We numerically investigate the performance of our algorithms using both synthetic and real-world data, showing that our algorithms outperform a previously proposed heuristic policy.

### Data Discovery Platforms and Their Open Source Solutions

In the past year or two, many companies have shared their data discovery platforms (the latest being Facebook's Nemo). Based on this list, we now know of more than 10 implementations. I haven't been paying much attention to these developments in data discovery and wanted to catch up. By the end of this, we'll learn about the key features that solve 80% of data discoverability problems. We'll also see how the platforms compare on these features, and take a closer look at open source solutions available.

### AI 4 Proteins 2021 Sponsors : AI 4 Scientific Discovery

If you are interested in sponsoring our event series, please contact Dr Samantha Kanza. Arctoris is an Oxford-based research company that is transforming drug discovery for biotech and AI-driven drug discovery companies, pharmaceutical corporations and academia. Arctoris developed and operates Ulysses, the world's first fully automated drug discovery platform. Accessible remotely, the platform enables researchers worldwide to perform their research rapidly, with more accuracy, transparency, and full reproducibility. Arctoris accelerates drug discovery programmes from idea to clinical testing, combining human ingenuity with the power of robotics.

### Hitting the Books: The Brooksian revolution that led to rational robots

We are living through an AI renaissance thought wholly unimaginable just a few decades ago -- automobiles are becoming increasingly autonomous, machine learning systems can craft prose nearly as well as human poets, and almost every smartphone on the market now comes equipped with an AI assistant. Oxford professor Michael Woolridge has spent the past quarter decade studying technology. In his new book, A Brief History of Artificial Intelligence, Woolridge leads readers on an exciting tour of the history of AI, its present capabilities, and where the field is heading into the future. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher. In his 1962 book, The Structure of Scientific Revolutions, the philosopher Thomas Kuhn argued that, as scientific understanding advances, there will be times when established scientific orthodoxy can no longer hold up under the strain of manifest failures.

### Pope seeks 'Copernican revolution' for post-COVID economy

Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com. ROME – Pope Francis urged governments on Monday to use the coronavirus crisis as a revolutionary opportunity to create a world that is more economically and environmentally just -- and where basic health care is guaranteed for all. Francis made the appeal in his annual foreign policy address to ambassadors accredited to the Holy See, an appointment that was postponed for two weeks after he suffered a bout of sciatica nerve pain that made standing and walking difficult. Francis urged the governments represented in the Apostolic Palace to contribute to global initiatives to provide vaccines to the poor and to use the pandemic to reset what he said was a sick economic model that exploits the poor and the Earth. Pope Francis delivers his blessing from his studio window overlooking St. Peter's Square, at the Vatican, Sunday, Feb. 7, 2021.