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	<title>smell &#8211; USA NEWS LIVE</title>
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	<description>All About USA NEWS</description>
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	<title>smell &#8211; USA NEWS LIVE</title>
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		<title>VRBO rent through the strange moldy smell penetration</title>
		<link>https://bloggingthree.soflytech.com/2025/02/vrbo-rent-through-the-strange-moldy-smell-penetration/</link>
		
		<dc:creator><![CDATA[chandankumarsoft]]></dc:creator>
		<pubDate>Sun, 09 Feb 2025 15:27:52 +0000</pubDate>
				<category><![CDATA[Travel]]></category>
		<category><![CDATA[moldy]]></category>
		<category><![CDATA[penetration]]></category>
		<category><![CDATA[rent]]></category>
		<category><![CDATA[smell]]></category>
		<category><![CDATA[strange]]></category>
		<category><![CDATA[VRBO]]></category>
		<guid isPermaLink="false">https://bloggingthree.soflytech.com/?p=24257</guid>

					<description><![CDATA[Dear travel treatment: I recently booked a vacation rental through VRBO. I arrived near midnight and it smelled strange. I discovered broken tiles and mold. I immediately contacted the host who assured me that he would repair the form. He said he couldn&#39;t get the form out of the wallpaper because he needed to remove [&#8230;]]]></description>
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<p><strong>Dear travel treatment:</strong> I recently booked a vacation rental through VRBO. I arrived near midnight and it smelled strange. I discovered broken tiles and mold. I immediately contacted the host who assured me that he would repair the form. He said he couldn&#39;t get the form out of the wallpaper because he needed to remove it, but he could spray it with bleach.</p>
<figure id="attachment_4497672" class="wp-caption alignright size-article_inline_third"><img decoding="async" class=" lazyautosizes lazyload" alt="Christopher Elliott, the travel error correction ..." width="895" data-sizes="auto" src="https://i0.wp.com/www.mercurynews.com/wp-content/uploads/2017/03/cct-trouble-0409-01.jpg?fit=620%2C9999px&#038;ssl=1" data-attachment-id="4497672" srcset="https://i0.wp.com/www.mercurynews.com/wp-content/uploads/2017/03/cct-trouble-0409-01.jpg?fit=620%2C9999px&#038;ssl=1 620w,https://i0.wp.com/www.mercurynews.com/wp-content/uploads/2017/03/cct-trouble-0409-01.jpg?fit=210%2C9999px&#038;ssl=1 210w"><figcaption class="wp-caption-text">Christopher Elliott, the travel supporter </figcaption></figure>
</p>
<p>My husband woke up in the midst of the night with respiratory difficulties. I gave him Benadryl and an inhalator. I put my children near the home with a window that was cracked. We went the subsequent morning before breakfast.</p>
<p>I contacted VRBO and shared pictures of the property. VRBO said it was unsure to remain there and paid for a hotel. They said they&#8217;d work to reimburse our money, but they weren&#8217;t back involved with us. We called 4 times and still don&#39;t have the promised reimbursement.</p>
</p>
<p><strong>ANSWER:</strong> I only checked out the images of the apartment and I agree &#8211; they shouldn&#39;t have even spent the night there. Gross!</p>
<p>Seriously, VRBO shouldn&#39;t have such places on its platform. But some slumlords &#8211; I mean, homeowners &#8211; are to generate income quickly, and plainly the one option to remove a property like that is to complain about what you probably did.</p>
<p>After showing VRBO the images, it agreed and paid a hotel room. VRBO has a &#8220;book with a guarantee of trust&#8221; that claims that it takes care of them when their rent is unsure. And mold is certainly unsure.</p>
<p>When it has read between the lines, it looks just like the host has not seen an issue with the rent. But the images were pretty convincing and their medical problems were also nothing to sneeze.</p>
<p>I even have seen many cases like this wherein it looks like VRBO is attempting to make an owner to offer a refund. VRBO would tell them that it is barely a platform, a mediator between you and the owner, but it surely actually has loads more electricity. It would have forced the matter or only refunded it themselves after which pursued the owner. Instead, it selected a middle ground, covered her hotel after which asked her to attend while he had negotiated with the owner.</p>
<aside class="related right"></aside>
<p>As I see it, there&#8217;s nothing to barter. Your rent definitely had a mold problem, and the owner may not have been in a position to eliminate it in a number of hours. It would have needed a mold specialist to alleviate the sort of problem.</p>
<p>VRBO couldn&#39;t have it in each directions. It had to pick out a page and the appropriate side belonged to you. A brief, polite egg mail to one in every of the executives of VRBO -I list your names, numbers and e -mail addresses on my site for consumer interest representation. <a href="http://Elliott.org" target="_blank" rel="noopener">Elliott.org</a> &#8211; must have done the trick.</p>
<p>Unfortunately there isn&#8217;t any magical rule that you would be able to call as much as get an organization like VRBO to do the appropriate thing. VRBO agreed in an unregistered phone call that they may help, but I don&#8217;t see any written evidence that it promised them a refund. Instead, VRBO told them that they&#8217;d not receive a refund, which is a disappointing answer after they went through every little thing for a number of months.</p>
<p>I contacted VRBO in her name to search out out if this was his final answer. The company took one other have a look at her case and decided that this was not the case. It reimbursed them the total 2,200 US dollars they spent on their rent.</p>
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<p><em>image credit : www.mercurynews.com</em></p>
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		<title>Customers like the variability of brands – but they&#8217;ll smell hypocrisy from afar</title>
		<link>https://bloggingthree.soflytech.com/2024/09/customers-like-the-variability-of-brands-but-theyll-smell-hypocrisy-from-afar/</link>
		
		<dc:creator><![CDATA[chandankumarsoft]]></dc:creator>
		<pubDate>Wed, 25 Sep 2024 10:10:42 +0000</pubDate>
				<category><![CDATA[News]]></category>
		<category><![CDATA[afar]]></category>
		<category><![CDATA[brands]]></category>
		<category><![CDATA[customers]]></category>
		<category><![CDATA[hypocrisy]]></category>
		<category><![CDATA[smell]]></category>
		<category><![CDATA[variety]]></category>
		<guid isPermaLink="false">https://bloggingthree.soflytech.com/?p=15711</guid>

					<description><![CDATA[Companies are increasingly emphasizing their support for diversity, but this could backfire if consumers feel it&#8217;s symbolic politics, a current evaluation found by my team. I&#8217;m a Assistant Professor of Marketing specializing in digital platforms and consumer behavior. My current research focuses on brands&#39; DEI initiatives on social media. I&#8217;m particularly thinking about how brands [&#8230;]]]></description>
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<p>Companies are increasingly emphasizing their support for diversity, but this could backfire if consumers feel it&#8217;s symbolic politics, a <a href="http://doi.org/10.2139/ssrn.4904551">current evaluation</a> found by my team.</p>
<p>I&#8217;m a <a href="https://www.ou.edu/price/marketing_supplychainmanagement/people/pankhuri-malhotra">Assistant Professor of Marketing</a> specializing in digital platforms and consumer behavior. My current research focuses on brands&#39; DEI initiatives on social media. I&#8217;m particularly thinking about how brands leverage influencers and minority representation. </p>
<p>An influencer is someone who <a href="https://influencermarketinghub.com/what-is-an-influencer/">large fan base on social media</a> and may influence the opinions or behavior of their audience. Influencer marketing is when brands work with these individuals to advertise their services or products to the influencers&#39; online followers. </p>
<p>An example of influencer marketing will be present in this text by <a href="https://musingsofacurvylady.com/about-me/">Influence on the Thamarr Warrior</a> Advertisement for Old Navy:</p>
<p>Influencer marketing has change into one of the necessary channels for interaction between brands and consumers, and minority representation amongst influencers is a technique for an organization to reveal its commitment to DEI.</p>
<p>To understand how consumers are responding to this trend, my colleagues <a href="https://damore-mckim.northeastern.edu/people/amy-pei/">Amy Pei</a> And <a href="https://directory.smeal.psu.edu/kkz5215">Zhao faucet</a> and I collected data from Platform X, formerly referred to as Twitter. Our unique dataset included sponsored content from around 150 brands between 2018 and 2022, in addition to details on influencers and consumer reactions.</p>
<p>We found that brands with either very low or very high percentages of minority influencers saw higher consumer engagement, while brands with moderate percentages of minority influencers saw a decline in engagement. These effects were particularly pronounced for giant firms and those who had previously demonstrated a big commitment to DEI initiatives.</p>
<p>In other words, we found a U-shaped relationship: low levels are accepted, medium levels can backfire, and high levels are well received. We consider this will likely be resulting from consumers&#39; perception that medium levels are only token politics. </p>
<p>In contrast, we found that a high proportion of minorities convinces consumers of a brand&#39;s real commitment and dedication. </p>
<h2>Why it&#8217;s important</h2>
<p>When brands show their support for diversity initiatives on social media, it doesn’t at all times persuade consumers. In fact, DEI policies are a source of controversy for a lot of brands, including <a href="https://www.nytimes.com/2023/05/31/business/chick-fil-a-woke-dei.html">Chick-fil-A</a>, <a href="https://www.nytimes.com/2022/04/17/business/disney-politics-florida.html">Disney</a> And <a href="https://hbr.org/2024/03/lessons-from-the-bud-light-boycott-one-year-later#:%7E:text=Taking%20a%20social%20stance%20has,a%20boycott%20of%20Bud%20Light">Bud Light</a>.</p>
<p>Because brands&#39; DEI initiatives often generate mixed reactions from consumers, it&#39;s necessary to grasp why. Our research offers a clue. </p>
<p>DEI is a sensitive topic and consumers value real engagement. Our work suggests that brands – especially larger ones – should avoid moderate stances and as a substitute take a transparent position. </p>
<p>We also found that customers responded more strongly to brands&#39; diversity efforts when those brands had previously expressed strong support for DEI, suggesting that brands must be cautious of over-promoting public signals in the event that they don&#39;t plan to back them up with motion.</p>
<h2>What will not be yet known</h2>
<p>Further research is required to grasp how consumers reply to brands’ diversity messages. For example, previous work has shown that consumer boycotts <a href="https://doi.org/10.1287/mksc.2022.1386">often of short duration</a>But the Bud Light boycott, sparked by means of a transgender influencer to advertise the brand, lasted <a href="https://hbr.org/2024/03/lessons-from-the-bud-light-boycott-one-year-later">eight months</a>. </p>
<p><a href="https://hbr.org/2024/03/lessons-from-the-bud-light-boycott-one-year-later">Several things</a> could explain the discrepancy, including the political polarization amongst Bud Light consumers and the incontrovertible fact that there are a lot of light beers in the marketplace. </p>
<p>Another necessary factor seems to have been the visibility of consumption: people often drink beer in social contexts, which allowed boycotting consumers to publicly signal their stance and further strengthen the movement. These and other aspects require further investigation.</p>
<p><em>The Research Brief is a summary of interesting scientific papers.</em></p>
</p></div>
<p><em>image credit : theconversation.com</em></p>
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		<title>Will your phone someday let you not only see and listen to but additionally smell what is occurring on the opposite end of the road?</title>
		<link>https://bloggingthree.soflytech.com/2024/09/will-your-phone-someday-let-you-not-only-see-and-listen-to-but-additionally-smell-what-is-occurring-on-the-opposite-end-of-the-road/</link>
		
		<dc:creator><![CDATA[chandankumarsoft]]></dc:creator>
		<pubDate>Mon, 16 Sep 2024 23:43:54 +0000</pubDate>
				<category><![CDATA[Technology]]></category>
		<category><![CDATA[day]]></category>
		<category><![CDATA[hear]]></category>
		<category><![CDATA[line]]></category>
		<category><![CDATA[phone]]></category>
		<category><![CDATA[smell]]></category>
		<guid isPermaLink="false">https://bloggingthree.soflytech.com/?p=14932</guid>

					<description><![CDATA[Is it possible to make a phone that permits us to smell like we are able to hear and see? – Muneeba K., 10 years old, Pakistan Imagine this: you choose up your phone to have a video call with a friend. Not only are you able to see their face and listen to their [&#8230;]]]></description>
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<div class="placeholder-container" style="--aspect-ratio-percent:48.9451476793249%;--background-color:#7f7f80"><img decoding="async" alt="" class="lazyload" src="https://images.theconversation.com/files/281719/original/file-20190628-76743-26slbc.png?ixlib=rb-4.1.0&#038;q=45&#038;auto=format&#038;w=237&#038;fit=clip" srcset="https://images.theconversation.com/files/281719/original/file-20190628-76743-26slbc.png?ixlib=rb-4.1.0&#038;q=45&#038;auto=format&#038;w=600&#038;h=293&#038;fit=crop&#038;dpr=1 600w, https://images.theconversation.com/files/281719/original/file-20190628-76743-26slbc.png?ixlib=rb-4.1.0&#038;q=30&#038;auto=format&#038;w=600&#038;h=293&#038;fit=crop&#038;dpr=2 1200w, https://images.theconversation.com/files/281719/original/file-20190628-76743-26slbc.png?ixlib=rb-4.1.0&#038;q=15&#038;auto=format&#038;w=600&#038;h=293&#038;fit=crop&#038;dpr=3 1800w, https://images.theconversation.com/files/281719/original/file-20190628-76743-26slbc.png?ixlib=rb-4.1.0&#038;q=45&#038;auto=format&#038;w=754&#038;h=368&#038;fit=crop&#038;dpr=1 754w, https://images.theconversation.com/files/281719/original/file-20190628-76743-26slbc.png?ixlib=rb-4.1.0&#038;q=30&#038;auto=format&#038;w=754&#038;h=368&#038;fit=crop&#038;dpr=2 1508w, https://images.theconversation.com/files/281719/original/file-20190628-76743-26slbc.png?ixlib=rb-4.1.0&#038;q=15&#038;auto=format&#038;w=754&#038;h=368&#038;fit=crop&#038;dpr=3 2262w" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px"></div><figcaption>
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<blockquote>
<p><strong>Is it possible to make a phone that permits us to smell like we are able to hear and see? – Muneeba K., 10 years old, Pakistan</strong></p>
</blockquote>
<hr>
<p>Imagine this: you choose up your phone to have a video call with a friend. Not only are you able to see their face and listen to their voice, but you can too smell the cookies they simply baked. It feels like something out of a sci-fi movie, but could it actually occur? </p>
<p>I&#8217;m a pc scientist and <a href="https://scholar.google.com/citations?hl=en&#038;user=Ckfl4_AAAAAJ&#038;view_op=list_works&#038;sortby=pubdate">examines how machines perceive the world</a>.</p>
<h2>What phones can do today</h2>
<p>When you hearken to music or discuss with someone on the phone, you possibly can hear the sound through the built-in speakers. These speakers <a href="https://www.explainthatstuff.com/loudspeakers.html">convert digital signals into physical vibrations</a> using a tiny component called a membrane. Your ears perceive these vibrations as sound waves.</p>
<p>Your phone also has a screen that displays pictures and videos. The screen uses <a href="https://rosieresearch.com/rgb-learning-define-create-colors-digitally/">tiny dots often called pixels</a> that are made up of three primary colours: red, green, and blue. By mixing these colours in alternative ways, your phone can show you anything from beautiful beach scenes to cute puppies.</p>
<h2>Smelling with phones</h2>
<p>And what concerning the sense of smell? Smells are created by tiny particles called molecules that float through the air and reach your nose. Your nose then sends signals to your brain, which identifies the smell. </p>
<p>So could your phone be sending you these smell molecules? Scientists are working on it. Think about how your phone screen works. It doesn&#39;t have all the colours on this planet stored. Instead, it uses just three colours to create tens of millions of various hues and shades. </p>
<figure>
<p><iframe title="How Your Sense of Smell Helps You Savor Flavor | Body Stuff with Dr. Jen Gunter | TED" width="1170" height="658" src="https://www.youtube.com/embed/3NFTa9kTVRU?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe></p><figcaption><span class="caption">How your sense of smell works.</span></figcaption></figure>
<p>Now imagine something similar for smells. Scientists are developing digital scent technology that uses a small number of various cartridges, each containing a selected scent. Just as pixels mix three colours to create images, these scent cartridges could mix to create different smells. </p>
<p>Just as the pictures in your phone are made up of digital codes that represent mixtures of pixels, the smells of a future phone may be created using digital codes. Each smell could have a special recipe made up of various amounts of the ingredients within the cartridges.</p>
<p>When you receive a digital scent code, your phone can mix tiny amounts of the various scents from the cartridges to create the smell you wish. This mix is ​​then released through a small opening on the phone so that you can smell. With just a number of cartridges, your phone can potentially create an enormous number of scents, just like how red, green and blue pixels can create countless colours.</p>
<p><a href="https://doi.org/10.1109/VR51125.2022.00043">Researchers</a> And <a href="https://blog.hubspot.com/sales/digital-scent-a-1.2b-market-primed-for-innovation">Pursue</a> are already working on such digital smell makers.</p>
<h2>The challenges of producing olfactory phones</h2>
<p>There are several challenges involved in developing a phone that may produce smells. One is developing a system that may produce hundreds of various smells using just a number of cartridges. Another is controlling the intensity of a scent and the duration of its delivery. Additionally, phones must sense smells of their vicinity and convert them into digital codes in order that your pals&#39; phones can send you smells.</p>
<p>The cartridges also must be easy to refill and the chemicals they contain must be inhalable. These hurdles make the sector of research a tough but exciting one.</p>
<h2>A fragrant future</h2>
<p>While it&#39;s not quite there yet, scientists and engineers are working hard to make smell phones a reality. Maybe someday you&#39;ll find a way to not only see and listen to your friend&#39;s celebration over the phone, but smell the candles they blew out too!</p>
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<p><em>image credit : theconversation.com</em></p>
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		<title>AI solves a difficult problem: It gives computers a way of smell</title>
		<link>https://bloggingthree.soflytech.com/2024/05/ai-solves-a-difficult-problem-it-gives-computers-a-way-of-smell/</link>
		
		<dc:creator><![CDATA[chandankumarsoft]]></dc:creator>
		<pubDate>Fri, 31 May 2024 09:22:37 +0000</pubDate>
				<category><![CDATA[News]]></category>
		<category><![CDATA[computers]]></category>
		<category><![CDATA[difficult]]></category>
		<category><![CDATA[problem]]></category>
		<category><![CDATA[sense]]></category>
		<category><![CDATA[smell]]></category>
		<category><![CDATA[solves]]></category>
		<guid isPermaLink="false">https://bloggingthree.soflytech.com/?p=4995</guid>

					<description><![CDATA[Over 100 years ago, Alexander Graham Bell challenged National Geographic readers to do something daring and fresh – “establish a brand new science.&#8221; He pointed out that there were already sciences based on the measurement of sound and light. But there was no science of smell. Bell challenged his readers to &#8220;measure a smell.&#8221; Today, [&#8230;]]]></description>
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<p>Over 100 years ago, Alexander Graham Bell challenged National Geographic readers to do something daring and fresh – “<a href="http://hdl.loc.gov/loc.mss/magbell.37500401">establish a brand new science</a>.&#8221; He pointed out that there were already sciences based on the measurement of sound and light. But there was no science of smell. Bell challenged his readers to &#8220;measure a smell.&#8221;</p>
<p>Today, most smartphones in your pocket include impressive built-in features based on the science of sound and light-weight: voice assistants, facial recognition, and image enhancement. Smell science offers nothing prefer it. But that situation is changing, as advances in machine odor recognition, also called &#8220;digitized smell,&#8221; are finally answering Bell&#39;s call to motion.</p>
<p>Research into machine olfaction faces an enormous challenge since the human sense of smell is so complex. While human vision relies mainly on <a href="https://www.britannica.com/science/photoreception/Structure-and-function-of-photoreceptors">Receptor cells within the retina</a> – rods and three varieties of cones – the smell is produced by about 400 varieties of <a href="https://my.clevelandclinic.org/health/body/23081-olfactory-nerve">Receptor cells within the nose</a>.</p>
<p>The machine&#39;s sense of smell begins with sensors that detect and discover molecules within the air. These sensors serve the identical purpose because the receptors in your nose. </p>
<p>But to be useful to humans, machine olfaction must go one step further. The system must know what a specific molecule or group of molecules smells prefer to a human. To do that, machine olfaction needs machine learning.</p>
<h2>Applying machine learning to smells</h2>
<p>Machine learning, and particularly a variety of machine learning called <a href="https://www.mathworks.com/discovery/deep-learning.html">deep learning</a>is at the guts of notable advances reminiscent of voice assistants and facial recognition apps. </p>
<p>Machine learning can be key to digitizing smells because it may well learn to map the molecular structure of an odor-causing compound to textual smell descriptions. The machine learning model learns the words that folks typically use—for instance, “sweet” and “dessert”—to explain what they experience once they encounter certain odor-causing compounds, reminiscent of <a href="https://www.acs.org/molecule-of-the-week/archive/v/vanillin.html#:%7E:text=Vanillin%2C%20as%20its%20name%20implies,alcohol%2C%20aldehyde%2C%20and%20ether.">Vanillin</a>.</p>
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<div class="placeholder-container" style="--aspect-ratio-percent:62.59946949602122%;--background-color:#ad6952"><img decoding="async" alt="A hand holds a device over a glass of a translucent brown liquid" class="lazyload" src="https://images.theconversation.com/files/597244/original/file-20240529-17-4octm9.jpg?ixlib=rb-4.1.0&#038;q=45&#038;auto=format&#038;w=754&#038;fit=clip" srcset="https://images.theconversation.com/files/597244/original/file-20240529-17-4octm9.jpg?ixlib=rb-4.1.0&#038;q=45&#038;auto=format&#038;w=600&#038;h=376&#038;fit=crop&#038;dpr=1 600w, https://images.theconversation.com/files/597244/original/file-20240529-17-4octm9.jpg?ixlib=rb-4.1.0&#038;q=30&#038;auto=format&#038;w=600&#038;h=376&#038;fit=crop&#038;dpr=2 1200w, https://images.theconversation.com/files/597244/original/file-20240529-17-4octm9.jpg?ixlib=rb-4.1.0&#038;q=15&#038;auto=format&#038;w=600&#038;h=376&#038;fit=crop&#038;dpr=3 1800w, https://images.theconversation.com/files/597244/original/file-20240529-17-4octm9.jpg?ixlib=rb-4.1.0&#038;q=45&#038;auto=format&#038;w=754&#038;h=472&#038;fit=crop&#038;dpr=1 754w, https://images.theconversation.com/files/597244/original/file-20240529-17-4octm9.jpg?ixlib=rb-4.1.0&#038;q=30&#038;auto=format&#038;w=754&#038;h=472&#038;fit=crop&#038;dpr=2 1508w, https://images.theconversation.com/files/597244/original/file-20240529-17-4octm9.jpg?ixlib=rb-4.1.0&#038;q=15&#038;auto=format&#038;w=754&#038;h=472&#038;fit=crop&#038;dpr=3 2262w" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px"></div><figcaption>
              <span class="caption">A university research prototype of a synthetic nose can distinguish between coffee and whiskey.</span><br />
              <span class="attribution"><a class="source" href="https://www.gettyimages.com/detail/news-photo/february-2022-schleswig-holstein-l%C3%BCbeck-the-display-of-an-news-photo/1240078559">Marcus Brandt/Picture Alliance via Getty Images</a></span><br />
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<p>But machine learning requires large data sets. The web offers an unimaginably great amount of audio, image, and video content that might be used to coach artificial intelligence systems that recognize sounds and pictures. Yet machine olfaction has long struggled with an information shortage, partly because most individuals cannot verbally describe smells as effortlessly and clearly as they will describe images and sounds. Without access to web-wide data sets, researchers have been unable to coach truly powerful machine learning models. </p>
<p>However, things began to vary in 2015 when researchers discovered the <a href="https://dream-olfaction.github.io/">DREAM Odor Prediction Challenge</a>The competition published <a href="https://doi.org/10.1186/s12868-016-0287-2">Data collected</a> from <a href="https://scholar.google.com/scholar?hl=en&#038;as_sdt=0%2C22&#038;q=andreas+keller+olfaction&#038;oq=">Andreas Keller</a> And <a href="https://scholar.google.com/citations?hl=en&#038;user=DaB4TAEAAAAJ&#038;view_op=list_works&#038;sortby=pubdate">Leslie Vosshall</a>Biologists who study the sense of smell invited teams from all over the world to submit their machine learning models. The models needed to predict odor labels reminiscent of &#8220;sweet,&#8221; &#8220;flower,&#8221; or &#8220;fruit&#8221; for odor-producing compounds based on their molecular structure.</p>
<p>The strongest models were tested in a <a href="https://doi.org/10.1126/science.aal2014">Article within the journal Science</a> in 2017. A classic machine learning technique called <a href="https://www.ibm.com/topics/random-forest">random forest</a>which mixes the outcomes of several decision tree flowcharts proved to be the winner.</p>
<p>I&#8217;m a <a href="https://scholar.google.com/citations?hl=en&#038;user=ttbl4FsAAAAJ&#038;view_op=list_works&#038;sortby=pubdate">Machine learning researchers</a> with a long-standing interest in the applying of machine learning in chemistry and psychiatry. The DREAM challenge sparked my interest. I also felt a private connection to the sense of smell. My family has its roots within the small town of Kannauj in northern India, which <a href="https://www.nationalgeographic.com/travel/article/how-did-kannauj-become-a-perfume-capital">India&#39;s perfume capital</a>. In addition, my father is a chemist and has spent most of his profession analyzing geological samples, so machine olfaction presented an irresistible opportunity on the intersection of perfumery, culture, chemistry and machine learning.</p>
<p>Progress in machine olfaction research gained momentum after the completion of the DREAM Challenge. During the COVID-19 pandemic, many cases of <a href="https://www.mayoclinic.org/symptoms/loss-of-smell/basics/definition/sym-20050804">Smell blindness or anosmia</a>were reported. The sense of smell, which normally takes a back seat, got here into public awareness. In addition, a research project that <a href="https://pyrfume.org/">Pyrfume Project</a>more and bigger data sets made publicly available. </p>
<h2>Smell deep</h2>
<p>By 2019, the most important datasets had grown from fewer than 500 molecules within the DREAM competition to about 5,000 molecules. A Google Research team led by <a href="https://scholar.google.com/citations?hl=en&#038;user=GPnusKcAAAAJ&#038;view_op=list_works&#038;sortby=pubdate">Alexander Wiltschko</a> it was finally possible to increase the deep learning revolution to the machine sense of smell. Their model, which is predicated on a variety of deep learning called <a href="https://blogs.nvidia.com/blog/what-are-graph-neural-networks/">Graph neural networks</a>founded <a href="https://research.google/blog/learning-to-smell-using-deep-learning-to-predict-the-olfactory-properties-of-molecules/">State-of-the-art results</a> in machine smelling. Wiltschko is now the founder and CEO of <a href="https://www.osmo.ai/">Osmo</a>whose mission is to “give computers a sense of smell”.</p>
<p>Recently, Wiltschko and his team used a graph neural network to create a “<a href="https://doi.org/10.1126/science.ade4401">Main odor map</a>”, by which perceptually similar smells are placed closer together than dissimilar ones. This was difficult: small changes within the molecular structure can result in large changes within the perception of smell. Conversely, two molecules with very different molecular structures can still smell almost the identical.</p>
<p>Such advances in deciphering the smell code will not be only intellectually exciting, but in addition offer promising applications, including personalized perfumes and smells, higher insect repellents, novel chemical sensors, early disease detection, and more realistic augmented reality experiences. The way forward for machine olfaction looks shiny. And it guarantees to smell good, too.</p>
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<p><em>image credit : theconversation.com</em></p>
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