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Web Design for Seniors: UX From a Mature Perspective

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It’s no secret that the senior population is growing. By 2030, people over the age of 65 are predicted to make up 20.6% of the population of the US. 

Around the world, people are living longer and remaining more active in the later years of their lives. What’s more, despite what you might have heard in the past, seniors aren’t as wary of the internet as they used to be. In 2019, the Pew Research institute revealed that 73% of people over the age of 65 were connected to the web. 

So, what does that mean for web designers?

your main focus needs to be on ability…people age differently

Well, first of all, it’s time for all of us to start thinking about user experience from different perspectives. We need to stop expecting our audiences to be made up entirely of iPhone-using millennials and start thinking about the needs of seniors too. After all, designing websites for seniors opens you up to a wide selection of potential visitors in the future.

What’s more, according to the US Census Bureau, people over the age of 65 generally have the highest household wealth figures of any age group. That’s a big deal. 

So, how do you adapt UX for seniors?

Creating Senior-Friendly Web Designs

When it comes to designing websites and applications for seniors, your main focus needs to be on ability. Age is just a number, and people age differently. 

That means that one person in their 70s might have no problem browsing through Netflix to watch the latest shows, while someone else wouldn’t be able to tell you what ‘streaming’ means. 

Rather than worrying specifically about age, think about how different people in older age groups might have different requirements when it comes to things like movement control, hearing, vision, and even device bias. 

Get the Visual Elements Right

Vision loss is by far the most common disability reported by elderly individuals in the US. Around one in six people over the age of 70 have some manner of visual impairment. That’s why UI designers need to think carefully about visual accessibility when creating the right websites. 

For instance, text and button sizes should always be kept large. Anything that needs to be read or clicked needs to be scaled up, to ensure that everyone can see the information clearly. For instance, on the Sandinmysuitcase.com website, you’ll find clear typography, combined with big buttons that tell you to “Start Here” so you know exactly what to do next.

Remember to stick to icons that are clearly labelled wherever possible. Stay away from anything that your customers might not understand. “Start Here” is easier to read and understand than “Submit”. 

It’s also worth sticking to the color and contrast guidelines laid out by basic UX design when you’re creating something for optimal visibility.  Colors that are too close together might create a nice pastel or gradient effect on a website – but they’ll also make things difficult to read. 

Concentrate on Usability

Over the age of 55, motor skills and coordination can begin to decline for some people. These changes make it harder for people to interact with complex UIs. The mouse on a computer can be a particular problem for people with diminishing motor skills – as can the touchscreen of a tablet or smartphone. 

When you’re working on the perfect UX, think about how you can make things as easy to click as possible for people who have a hard time hitting their targets. For instance, in this website for people traveling over the age of 50, you’ll see not only fantastic large font choices but big buttons that are descriptive and easy to understand too: “Click here to start planning your trip”:

The scrollbar can also be a bit of a problem for people with impaired motor skills. Because of this, it’s best to keep your focus on designing above the fold. Make sure that users don’t need to scroll far to find the information that they need and keep scrollbars simple in terms of their look and feel.

While you’re working on usability, remember that it will be important to keep interactions to a minimum wherever possible. Where you can engage younger audiences with double-taps, swiping and scrolling, it’s much easier to connect with seniors through simple one-tap interactions. The less actions your user needs to take to reach their goals, the better. 

Deliver Smooth Navigation 

Navigating from point A to B on your website needs to be as simple as seamless as possible. Remember, crowded pages on your websites and apps are often overwhelming – even for younger browsers. Seniors are generally just searching for “must know” information, so they don’t want anything to get in their way as they navigate through their website. 

As you work on your site or app design, ask yourself if every element on the page absolutely has to be there. If it doesn’t deliver value, then get rid of it. 

Additionally, remember that seniors don’t always have the best memories and concentration levels. That means that they need your navigation experience to be as simple as possible. Basic horizontal menu bars that show everything at once are often a good idea – even if they’re not very exciting.

Look at this helpful navigation experience from RetireMove.com, for instance. Everything you need is located at the top of the page, and you can even just enter your postcode to get started:

Cognitive decline happens regularly with age. Although not all older adults will have issues with their memory and concentration, it’s important to be prepared for an audience that might process information a little more slowly. It’s worth double-checking that your viewer’s attention isn’t being diverted to multiple parts of the page at once.

Get to the Point Quickly

While younger generations have quickly implemented technology into every aspect of their lives, older consumers use tech a little differently. These people don’t want to spend forever fiddling around with different parts of your website. They want to get the answers to their questions as quickly and easily as possible. 

Applications that are complicated or difficult to access are usually instantly rejected by seniors. Even if you’ve offered everything that we’ve covered above, from seamless navigation to minimalist design, you still won’t get the interactions you’re looking for if older adults don’t consider your design to be useful. 

Because of this, you need to highlight the point of a website or application to your seniors as quickly as possible. Avoid worrying about things like gifs, animations and gamification. Instead, focus on making sure that your designs are useful and simple. 

For instance, from the moment your senior user arrives on a web page, they should have instant access to clear instructions on how to use the application or service, and what they need to do next. Keep in mind that this is particularly important when you’re creating mobile apps, as apps are still a relatively new concept to older generations. 

On the “When They Get Older” website, you can instantly find the information you need in a well-organized navigation bar that’s labelled clearly:

A clear interface like this, combined with simple, step-by-step guidance that shows elderly individuals how to get the information that they want is the key to keeping these users coming back for more. 

Bringing a Mature Perspective to Web Design

These days, most designers focus heavily on younger audiences when creating websites and apps. After all, it’s these users that allow us to experiment more with the latest tools and concepts, like augmented reality, artificial intelligence, and robust animations. 

However, there’s still a market out there for the seniors of the world that want more opportunities to get online. This audience often goes ignored and under-served. However, as the value of older consumers grows, and their ability to interact online increases, you’ll find that more businesses begin to search for web designers who can provide immersive experiences for a more mature audience. 

The steps above will give you an excellent insight into how you can start designing for a different kind of customer base. However, remember that the best way to make sure that you’re delivering the right solution for any customer, is to test. User testing will provide you with the exclusive insights that you need to determine whether your senior UX is really working, or whether you’re still struggling to get into the shoes of an older user. 

 

Featured image via Unsplash.

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EU Privacy Shield and the Future of Data Regulation-Compliant DBs

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On July 16, 2020, the European Court of Justice got rid of the four-year-old Privacy Shield agreement struck between the U.S. and the EU that had exposed Europeans to possible U.S. surveillance. The agreement had also allowed U.S. companies like Facebook and Google to store data about European residents outside of the region. 

This move is yet another great example of the EU doing “right” by their constituents and holding tech companies responsible for their users’ data privacy. The news also builds on the EU’s General Data Protection Regulation (GDPR) leadership, extending its consumer protections and providing a model for the rest of the world to work from as global data privacy policies continue to evolve.

Source de l’article sur DZONE

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The Designer’s Guide to Letter-Spacing

Most of the information we consume happens through reading, so it makes a lot of sense to pay attention to the words when designing. There are many aspects to typography, but one of the things that helped improve the quality of my design was letter-spacing.

Letter-spacing is about adding and removing space between letters. Some people confuse it with kerning, but these two are different; letter-spacing affects the whole line of text, whereas kerning adjusts the space between two individual letters at the time. Kerning is best left to type designers, besides which, unlike letter-spacing there is currently no way to control kerning in CSS.

I believe that practice and a lot of observation will change the way you treat letter-spacing in your work as well.

The Purpose of Letter-Spacing

The main purpose of letter-spacing is to improve the legibility and readability of the text. Words act differently depending on their size, color, and the background they are on. By adjusting letter-spacing to the environment you are working with you will help readers consume your information faster, and more efficiently. The fun part is that they won’t even notice it — that’s the whole point of the job.

Bear in mind that typographers think about letter-spacing and kerning when designing a typeface. It means you don’t have to apply it to all your text, but in order to have an understanding when it’s necessary, you should know some basic principles, and use good typefaces.

How Letter-Spacing Affects Legibility and Readability

The legibility and readability of your text depend on things like line-height, paragraph length, font size, typeface choice, letter-spacing, and much more. Regarding letter-spacing, if you are just getting into typography, the best thing you can do is not overuse it. What I mean by that is simply don’t make the distance between letters too big or too small; even if you think it looks good, people will struggle reading it, and that will ruin their experience.

Letter-Spacing Capital Letters

Capital letters are designed with the intention that they will appear at the beginning of a sentence or proper noun, in combination with lowercase letters. When capital letters are next to each other, the space between them is too tight. So in order to achieve better readability, space needs to be increased. This applies to both large and small font sizes.

Letter-Spacing Headlines

If you are using well designed fonts, you can be sure that they are calibrated well, and you won’t need to make any major adjustments to them. However, the problem with headlines is that at larger scales the space between letters looks unbalanced. It can be fixed by increasing or decreasing the letter-spacing value.

There are no strict rules for letter-spacing — there are a lot of typefaces and all of them require an individual approach — but if you look at how big companies like Google and Apple treat their typefaces, you can find a lot of valuable information there.

Let’s take a look at the “Roboto” and “San Francisco” typefaces (the first one is used in Material Design and the second one in Apple’s ecosystem). Headlines from 20 to 48 pixels have either a positive letter-spacing value or none. If the font size is bigger, letter-spacing becomes negative. These exact numbers are not going to work that well for other typefaces, but after trying different approaches I can state that it’s a common pattern.

I’ve tested several guidelines for letter-spacing and the one that was published by Bazen Agency works for a lot of popular typefaces. It will be a good starting point for you, but you can always apply additional adjustments:

  • H1 — 96px — -1.5%
  • H2 — 60px — -0.5%
  • H3 — 48px — 0%
  • H4 — 34px — 0.25%
  • H5 — 24px — 0%
  • H6 — 20px — 0.15%
  • Subtitle — 16px — 0.15%

If you happen to design a lot of apps or you’re planning to do that, one thing that helps me is using the default Material Design and Apple guidelines for their typefaces. They are well balanced and it saves a lot of time.

Letter-Spacing Body Text

If you ever read anything about letter-spacing, you’ve probably have seen this popular wisdom from typographer Frederic Goudy: “Anyone who would letter-space lowercase would steal sheep”. (There’s an argument that he was only referring to blackletter fonts.) Some designers took it as a hard rule and now never adjust the letter-spacing of lowercase text.

Based on my practice and by looking at the work of designers I can’t agree with Goudy, because sometimes small changes can make a big difference in how your text performs. Let’s take, for example, condensed fonts. At a small size, the letters are too close to each other, which leads to poor legibility. By increasing letter-spacing by 1.5% you will see that the text is now easier to read.

If we look at my previous example, in the guidelines for “Roboto” and “San Francisco” typefaces, letter-spacing is applied to body text; even though San Francisco has a dedicated “SF Pro Display” for headlines and “SF Pro Text” for body text, letter-spacing is still used to refine them.

There are a lot of different typefaces and a single rule doesn’t apply to all of them. Experiment with letter-spacing and do what seems right to you. There are some simple guidelines that will lead you in the right direction, especially when working with body text:

Keep in Mind Line-Height

If you have a line-height greater than 120%, most likely negative letter-spacing will lead to an unbalanced look to the paragraph. To refine it you would need to either keep it at 0% or only slightly increase it.

Light Text on Dark Background

On a dark background, white text looks overexposed and therefore letters appear too tight. To make it more legible, I would suggest you increasing letter-spacing a small amount.

General Values for Body Text

You can use the following guidelines for body text, which I have tested with several typefaces:

  • Body 1 — 16px — 0.5%
  • Body 2 — 14px — 0.25%

Letter-Spacing Captions

Unlike headlines and body text, smaller font sizes don’t have many variations in letter-spacing. It’s a common practice when a font size is lower than 13px to increase the space between letters to make it legible. But there are always exceptions (“SF Pro Text” guidelines suggest using positive letter-spacing only when a font size is 11px or below). Make sure you experiment with settings.

You can use the following values as a starting point and then edit them to what seems right to the typeface of your choice:

  • Caption — 12px — 0.5%
  • Overline — 10px — 1.5%

Final Tip

One of the things that helped me improve my skills in typography was looking at other designers and especially type foundries. By decoding their work you might notice some nuances of how they treat typography and it will help you in future projects.

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Translate your Enterprise apps in 1 second

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I must have seen dozens of implementations of this exact same web app during my 25 years as an Enterprise developer. And to be honest with you, I’m tired of implementing the exact same app, over and over again. "Don’t reinvent the wheel" comes to mind. Hence, I decided I wanted to create a "micro service web app", providing me with all translation features I could possibly need in the future. And more interestingly, I will create the entire app, in 1 second, by simply clicking a button. If you don’t believe me, feel free to watch the following YouTube video, where I demonstrate how I solve all my translations needs, for the rest of my life, in 1 second.

The SQL script I am starting out with can be found below.

Source de l’article sur DZONE

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Eye Vs AI: Harnessing Technology to Successfully Track User Attention

Attention is the new gold; brands are in a constant competition for our attention.

A big portion of our time we spend online, where we are bombarded with insane amounts of information and advertisements. It’s hard not to become overwhelmed in this world of consumerism. We have had to become good at quickly evaluating which information is important, especially on the internet.

Good marketing specialists know that they have mere seconds to turn a potential customer into a lead. People are not going to spend a lot of time examining your advertisement or landing page, either it clicks or not. Moreover, most users do not read the articles, they scan them. First impression plays a huge role in the success of your business, so do not leave that to a chance.

You really don’t want your customer to ignore that special sale, subscription option, or another call to action on your webpage. That is why you need to know where that gold-worthy attention goes when a user opens your landing page. Here’s where technology can come in handy.

Eye-Tracking in Web Design

It is very important to know where your website visitor’s attention goes first. How to get that info? Eye-tracking is the answer.

Eye-tracking technology can be used to optimize your website conversions. By tracking eye movements, technology will recognize which content is most intriguing for the users. It will reveal whether people pay most attention where you want them to, which elements are distracting or not visible enough, and where sales are lost. This information is invaluable if you want to succeed in the current market.

This information is invaluable if you want to succeed in the current market

How does it work? An eye tracker, such as webcam or goggles, measures movement of an eye. Collected data is analyzed and presented as a heatmap, highlighting which elements of your design attract most attention. Having in mind that browsing time rarely exceeds a few seconds, this information is very valuable when you try to understand your audience.

You wouldn’t want to spend much time on your website design just to discover it does not generate desired conversion rate. By employing this technology you can make changes based on reliable data rather than intuition and guarantee your business future success.

By now you may think that you definitely need to carry out this eye-tracking study, but there is a catch. A high-quality behavioral observation or eye-tracking is a time-consuming, budget eating complicated process.

If you want to draw conclusions from heatmaps, you would need to include at least 39 participants in a study. One individual test may last from 20 minutes to an hour. Time quickly adds up when you include preparation and analysis of the results. The average eye tracker price is around $17,500 and it may vary between several thousand dollars and $50 000. Of course you can hire a company to carry out this research for you but it may cost you several hundred dollars a month. Luckily, technological innovations allow us to acquire the same insights about users’ attention flow much cheaper and faster than conducting or buying an actual eye-tracking study.

Technological innovations replace real eye-tracking study

AI-Powered Automatization of Eye-Tracking

In this task of understanding how internet users are interacting with your website, Artificial Intelligence (AI) seems to be an answer. AI-based technologies already have become prevalent in various services we use on a daily basis. For example, Netflix’s highly predictive algorithm offers viewers personalized movie recommendations. Medical researchers utilize eye tracking to diagnose conditions like Alzheimer’s disease or Autism. As these algorithms become better every year, AI also becomes an irreplaceable tool in business.

Over the years researchers have collected so much data that human behavior becomes really predictable

How can AI help you to understand your customer’s attention? The main feature of AI is that it can mimic human intelligence and constantly improve itself by learning from data. Predictive eye-tracking is based on deep learning and trained with previous eye tracking study data. Over the years researchers have collected so much data that human behavior becomes really predictable. Technology predicts which specific areas of your website attract most interest. In this way, AI enables you to speed up the UX research process and get insights about your design in a matter of seconds.

Too good to be true? There are already several available tools on the market, such as Attention Insight or EyeQuant. These predictive design tools are based on deep learning and trained with previous eye-tracking studies data. Up to date, they have achieved an 84-90% accuracy.

AI-powered attention heatmap

AI solutions for designers and marketers have already become major competitors to traditional eye-tracking studies. Due to active competition, predictive eye-tracking tools are constantly innovating and recently started generating heatmaps for videos. Another useful feature that provides decision-makers with quantitative data is a percentage of attention. Users can define an object that they want to test and get an exact percentage of attention that the object receives.

Conclusion

Since all digital products are competing for user’s limited attention, it has become one of the most valuable resources. Due to fierce competition, it is not enough to rely on your intuition and gut instinct while making important decisions anymore. Designers have a choice in this economy of attention, though.

Yes, there are eye-tracking studies that require a significant amount of time and financial resources.

However, you can make user-centric, data-driven decisions in a quick, scalable, and private way while your product is still under development. AI-powered predictive eye-tracking tools might be an answer. Attention is a new currency, and you must measure it.

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Diversity Initiatives in Web Design

Web developers have been the bedrock of any company’s business strategy for some time, and the industry is continuing to thrive and grow at a rapid pace. This is why it’s surprising that it is so lacklustre when it comes to diversity.

A recent study revealed 80% of those in the design industry are male, and more specifically 79% within the field of web design. According to WISE, just 23% of the people working in STEM roles (Science, Technology, Engineering and Maths) are female and women currently account for just 15.8% of the UK’s current generation of engineering and technology graduates.

Why the Lack of Diversity in Web Design?

The main reason for this, as cited by the Organisation for Economic Co-operation and Development (OECD) found that women still lack the confidence to pursue these careers, despite their school results being as good as (or better) than their male counterparts. Research has found that the professional and technical services sector has the fourth-highest gender pay gap of all UK industries. If more women were to join these higher-paid sectors it could help reduce the gender pay gap as a whole, as well as help female economic empowerment.

This division is seen in ethnic minority groups too. The numbers for BAME (Black, Asian, Minority Ethnic) employees in the British tech industry are unknown but is estimated by the British Computer Society to be at 1-2%, a ridiculously low number in this day and age. This is why groups and organisations are cropping up designed to promote an industry that reflects all of society rather than one part of it. Here are some of the organisations to pay attention to who are bridging the diversity gaps in web design.

Girls Who Code

Girls Who Code are working to create opportunities for women within tech, aiming to deepen their computer science skills and confidence. They run a range of programs designed to equip women with the necessary computing skills to pursue opportunities in the field and to give chances that are often shunned due to society. Founder Saujani states that women are socialized to seek perfection, and this is something that needs to be overcome. One way to break that mentality at an early age, she says, is coding:

[Girls] walk into these classrooms and they feel like they will never be good at it, and when they learn how to create something, whether it’s a website or app, it changes their mindset and they stop giving up

Adobe Design Circle

Adobe Design Circle is another initiative aiming to introduce all members of society to design. They want to create more visibility for design as a viable career path for anyone that might be considering it, and to help with youth entering the field. This is opening the opportunities of working in tech and web to aspiring designers at a young age who aren’t necessarily yet conditioned by the pressures of society and showing them it can be a realistic career path.

They have their own scholarships and mentoring initiative to support these goals too. The faces behind the team of Adobe Design Circle range through multiple ethnicities and have a fairly even male-female divide. This equal representation alone is inspiring. One of Adobe’s core missions is to offer youth the opportunity to learn and express themselves through creativity and technology, regardless of their economic or cultural backgrounds. With this they specifically encourage applicants of all backgrounds to apply and offer many other opportunities from mentoring to internships.

Ladies that UX

Ladies that UX are a collaborative community of women in UX aiming to “support each other, push the UX boundaries and promote female skill and talent.” It is a European-based initiative where each city involved runs slightly different events and groups decide together what they would like to get from their meetups. They assist each other with UX challenges, discuss topics, and brainstorm ideas. Ladies that UX was created in 2013 by Georgie Bottomley and Lizzie Dyson with the aim of bringing together women in the industry, offering support and creating connections around the world.

Xuntos

Xuntos is aiming to create the largest community of ambitious and talented individuals from under-represented groups in the technology industry. It works to nurture university students and recent graduates that are often overlooked in the tech industry by the means of educational workshops, university hubs, events and an active community. The very name “Xuntos” is a Galician word which means “together” and this is their most important factor. They want people to realise they are not alone and just because the representation isn’t there, doesn’t mean their capabilities aren’t.

Colorintech

Colorintech is a non-profit organisation that was founded in 2016. It aims to close the gap and shorten the learning curve, with a strong community designed to help each other. The company was founded by Silicon Valley tech executive Dion McKenzie and ex-Googler Ashleigh Ainsley after they became frustrated at the few black individuals in the field. Since its inception 30,000 students, professionals, volunteers and tech companies have been impacted by their work, and over 450 minorities graduated from their programs in 2019 alone.

UKBlackTech

UKBlackTech are on a mission to create the most diverse tech sector in the world. Their aim is to encourage more ethnic minorities to enter the UK’s technology workforce and make an impact. To help with this, they design and implement different initiatives to help them get employed and retain employment, put on bespoke events that target aspects such as specific job roles or tech topics and promote different opportunities for members to apply to.

Witty Careers

Witty Careers was created with the aim to support women from black and ethnic minority backgrounds in the UK and equip them with the skills to build a career in the tech industry. They run different practical skills workshops and events which in the past have included visits to a Microsoft store, Uber, and Pivotal. They open doors for communications, networking and future career prospects for those in the minority. They also have a handy range of resources designed to help you get into the career you want. From CV writing advice to industry insights, they are all free of charge.

Featured image via Unsplash.

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La mairie de Rosny-sous-Bois utilise le chatbot de SAP pour converser avec ses habitants et anticiper sa croissance démographique

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Rosny-sous-Bois, ville dynamique de Seine Saint-Denis, anticipe les nombreuses transformations engendrées par le Grand Paris notamment sur son nombre d’habitants. Déjà desservie par le RER E, la commune de 45 000 habitants entrée dans la métropole du Grand Paris en 2016, verra s’ouvrir trois nouvelles stations de la ligne 11 en 2023, et une station de la future ligne 15 en 2025. Ainsi, la mairie anticipe sa croissance démographique pour devenir un ville phare de l’est parisien. Pour anticiper ces changements, le numérique est un atout du futur Rosny-sous-Bois. La ville a donc choisi la solution SAP Conversational AI pour accueillir au mieux ses futurs citoyens.

La mise en place d’un chatbot, première pierre vers une vocalisation des services de la ville

Depuis janvier 2019, un chatbot développé par la solution SAP Conversational AI fait office d’interface privilégiée avec les habitants de Rosny-sous-Bois. L’objectif est d’assurer un premier niveau de service public différenciant par rapport aux villes voisines en proposant un service simple d’utilisation capable de répondre aux questions des citoyens de la commune en 24/7.

« Nous avons choisi la solution SAP car elle était la seule à pouvoir couvrir l’ensemble de nos services. Son caractère langage agnostique nous permet également de prendre le tournant de la vocalisation des services. En effet, Nous souhaitions également pouvoir répondre en plusieurs langues pour répondre à des populations non-francophones et offrir des services publics de qualité pour tous les habitants », explique Menahd Ouchenir, Conseiller Municipal délégué à la ville numérique.

Une solution rapidement adoptée par les habitants de la ville

En l’espace d’un an, le chatbot de SAP est rentré dans le quotidien des habitants de la ville de Rosny-sous-Bois. Ils n’hésitent pas à lui poser des questions impactant leur quotidien : les jours de collecte des poubelles, les transports fonctionnant en période de grève, les services disponibles pendant le confinement ou encore les dates des élections municipales.

« Les habitants de la ville ont rapidement fait du chatbot un outil de leur vie quotidienne : nous comptabilisons maintenant 2 500 utilisateurs uniques par mois, 4,5 messages par utilisateur, un taux de compréhension de 74%, et un taux de précision de 0,878. Pendant la période de confinement, cela nous a permis de maintenir un lien supplémentaire avec les habitants de la ville et de répondre à leurs interrogations. En complément, le chatbot est un atout de communication et pousser les utilisateurs à aller vers les contenus du site. Cela nous permet donc d’aller plus loin dans notre rôle de service public », ajoute Menahd Ouchenir.

Améliorer constamment la solution pour accueillir les futures populations de la façon la plus efficace possible

Avec 300 intentions et 2 700 tournures de questions comprises par le chatbot, la solution proposée par SAP est largement opérationnelle. Toutefois, les équipes communication et événementiel de la mairie analysent constamment les questions posées par les habitants afin d’enregistrer de nouvelles tournures de phrases et de nouveaux sujets pour que l’IA les comprenne de manière optimale par la suite. L’objectif final est maintenant d’arriver à soulager les différents pôles de la mairie en déléguant l’ensemble des questions quotidiennes au chatbot, et ainsi faciliter l’emménagement des nouveaux rosnéens.

L’avantage de cette solution est sa capacité à adresser des périmètres et métiers hétérogènes, et ainsi de répondre à des questions sur un grand nombre de domaines.

« Le résultat de cette intégration à notre site web est très satisfaisant. Nous souhaitons à long terme enrichir notre socle de données technologiques grâce à SAP pour pouvoir nous diriger vers une vocalisation toujours plus sophistiquée », conclue Menahd Ouchenir.

The post La mairie de Rosny-sous-Bois utilise le chatbot de SAP pour converser avec ses habitants et anticiper sa croissance démographique appeared first on SAP France News.

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How to Create Controllable Futures in Scala

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This article is for the Scala programmer who has at least used or heard about Futures before. You can also find this over at the Rock the JVM blog or on YouTube in video form or embedded below:

In this article, I’m going to address the problem of "deterministic" Futures in Scala. You probably know by now that Futures are inherently non-deterministic, in the sense that if you create a Future
Scala

You know the value inside will be evaluated on "some" thread, at "some" point in time, without your control.

The Scenario

Here, I will speak to the following scenario which comes up often in practice. Imagine you’re designing a function like this:
Scala

with the assumption that you’re issuing a request to some multi-threaded service which, is getting called all the time. Let’s also assume that the service looks like this:
Scala

The service has two API methods:
  1. A "production" function that is completely deterministic.
  2. A submission function that has a pretty terrible API because the function argument will be evaluated on one of the service’s threads, and you can’t get the returned value back from another thread’s call stack.
Let’s assume this important service is also impossible to change, for various reasons (API breaks, etc). In other words, the "production" logic is completely fixed and deterministic. However, what’s not deterministic is when the service will actually end up calling the production function. In other words, you can’t implement your function as:
Scala

because spawning up the thread responsible for evaluating the production function is not up to you.

The Solution

Introducing Promises — a "controller" and "wrapper" over a Future. Here’s how it works. You create a Promise, get its Future and use it (consume it) with the assumption that it will be filled in later:
Scala

Then pass that promise to someone else, perhaps an asynchronous service:
Scala

And at the moment, the promise contains a value. Its future will automatically be fulfilled with that value, which will unlock the consumer.

How to Use it

For our service scenario, here’s how we would implement our function:
Scala

We create a promise and then we return its future at the end for whoever wants to consume it. In the middle, we submit a function that will be evaluated at some point out of our control. At that moment, the service produces the value and fulfills the Promise, which will automatically fulfill the Future for the consumer.
This is how we can leverage the power of Promises to create "controllable" Futures, which we can fulfill at a moment of our choosing. The Promise class also has other methods, such as failure, trySuccess/ tryFailure and more.
I hope this was useful!

Source de l’article sur DZONE

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