 Thank you. Thank you. So first of all, welcome. Good morning. Buenos dias. It's a great pleasure to be here today I've been waiting for this day for a long time, so I'm super excited to be here with all of you Now my name is Juan and I work at Kassau for engineering the trust and safety team at beat Lee However today, I won't talk about trust nor safety nor beat Lee instead I want to talk about some tiny and cute experiment that I did which among other things going to explain why Vacuum veteran Sunday makes me happy. So I've been using a mood tracking app for over a thousand days That's a little bit more than three years and he started as you may know to go to the app store You see some new exciting app you click on it and you start to play around with it However, this one became more than that it became a little bit more special Because those five to ten seconds that I spend every day to enter my mood became some sort of my daily meditation And you know what I'm talking about that time when you close your eyes you look at the ceiling and you ask yourself How am I feeling today? And this is the app. I'm using it's called a Leo and no I do not work for them and every night at 7 and 9 p.m. Local time It asked me he sent me a notification asking how are you feeling today when I click on it? It shows me this nice green that we see here I think we have five faces ranging from extremely happy or rad to awfully sad Of course you enter your mood click and then it's gonna ask you what have you been up to what have you been doing today? And by default it has around 20 to 15 activities, but of course you're able to add your own Activities, and I'm gonna show you some of my later Well, not later. Let's wait now. Yeah So this experiment covered a thousand and seventeen days. I started on January 4th 2019 New Year's resolution, right? And I am this experiment here is top on October 19, 2021 Why did I stop to reason first? I had to gather the data to analyze the data, of course And also around this time I was having some sort of existential existential crisis And I thought of leaving Germany what I was leaving before I'm moving to Austin Texas what I'm leaving now So that I wanted to somehow have some sort of before Germany Analysis so I could later do an after Germany analysis and maybe I'll present it next year who knows so in this time I have locked my mood a thousand and thirty one times and At first I wanted to do it actually twice a day, but I realized like no one come on that This is way too much. So I just stop after the first week And these are the mood frequency and the first chart that I'd be showing I heard we have all the moods starting from good Which is the fourth best rat meh and bad and we can see that mood is the top one with sixty one percent Followed by rat meaning that I have felt quite good in 80 percent of my days that we have made with 19 And bad with one however awful is missing here and that's because fortunately so far so far I have never had to resolve to that awful mood So I think I'm quite a happy guy. I would say This is the login time as I mentioned earlier the app notifies me at 7 and 9 p.m. And the median is around 9 p.m. With some small exception that I'm going to cover later now in this time I have reported 44 unique Activities and these are the frequency count. You don't have to focus on all of them I'm going to explain some of the most important one and there's one with a bad word, but I mean we are humans, right? So the first one is friends and I want to focus on friends because usually when I enter my activity What I'm actually entering that night is the highlight of my day And if I'm with friends chances are that this is going to be the highlight of my day Then we have Ariel and no, that's not the little mermaid. That's actually my ex We spent around four years together. So of course her name is going to show To pop out many times here during the conference doing the presentation. Sorry Jesus. So then yeah Video then we have other cool activities like riding exploding coding got me on Netflix Lockdown COVID-19 Pokemon with refers to Pokemon related activities I'm a huge fan of Pokemon as you can see my Pikachu tattooed and Others like hiking formula one which refers to either watch a formula one race or just being their life Something that I've been doing for the last two years. It's quite cool. I'm quite expensive Now this is the average mood Score when the activity is present starting from the worst one to the best one And I want to focus on the bad one for now So we have locked down COVID-19 and to give you some tiny context when COVID happened it started I was back back in through Asia, New Zealand, which sounds cool But of course at some point I was stuck in New Zealand for like four months then Ariel's you went back to Germany I'm no German so I couldn't go with her so that was quite sad and angry, you know Because I was just sitting there on employees waiting for some miracle which came maybe after four months Then we have napping and it's not that napping makes me sad It's just that I usually napped when I'm feeling sick and sick makes me sad So there's some kind of correlation there then we have others like flying Because I don't like flying. I mean being sitting on an airplane sucks is awful and then can I say the word? Yeah, and then we have fucking Mac. What happened? So that happened when this computer decided to stop working two weeks before I had to deliver the draft on my book So that was very angry and it was in New Zealand So I have to go to to go to Auckland and they told me we don't have the piece We need to send the computer with to Australia to see me and I was like Jesus Lord What about my book? You know, but anyway everything worked and then we have others like friends Of course, I is quite high here the average mood because friends miss me happy also baking before point zero not for the standard deviation and the one of course we have the standard deviation of the Mood when an activity is present and we have a baking is the first one with a very low standard deviation But we know that baking is four point zero. So, you know, it makes me happy So we can see that baking indeed makes me always happy. It's not rad. It's just happy just good So then we have others very cool. I friends the standard deviation is quite Hi, I would say what usually friends is Here so I would say that is either good or rad And then we have aerial and this is like a very interesting one I'm maybe the highlight of this one and I mean, you know, when you're in a relationship You have your normal days, you know, where you just watch Netflix or just cook something Then you had your rad days where you are doing something very cool You're traveling you're fulfilling a dream and then of course you have your me days where maybe unfortunately you have some sort of Disagreement or discussion and that's why there's a whole range of emotions right here and we can see you with the large standard deviation now here I'm just like cherry picking some of the Activities that are like the most and how they influence the average mood when the activity is present So we have that lockdown it kind of decreased one whole mood from zero to minus one point zero a game napping and sick Which I mentioned earlier then we have bleeping Mac and then we have others that make me happy like writing gaming F1 friends Pokemon and Exploring but now let's move on and let's talk about our combinations and correlation So I didn't enter any activity in 31% of the days Why maybe there wasn't any highlight on that day or I just wasn't feeling like it Then in 31% I enter one and in 38% I enter more than one and these are the top First we have good meal and friends because I believe there's nothing better than having a good meal with your friends Maybe we'll do that tonight. Then we have writing reading friends drinking traveling exploding friends and Aerial, but then I want to look at this. This is the correlation Sorry a correlation pyramid and don't focus on them. Don't focus on this tiny color Let's focus on this these are the top or the highlights from here And we have that the highest correlation is in photography and exploring with exploring I mean going to a new city new country new forest and just walking around and usually when I'm doing that I have my camera with me like I did yesterday like I have today my camera in my backpack So for me, there's one of the best things going to a new place with my camera and doing those things and That's why the correlation is zero point 46 the highest one of all of all the activities Now the lowest is friends and writing because if I'm with friends Maybe I'm not writing and if I'm writing it's because I want to ignore my friends on that day And that's where the correlation is negative point 16 Not for my family the ones we have F1 and bouldering so when I was in Germany for some reason I used to enjoy doing bouldering on Sundays Maybe because it's empty because I don't know Sunday was the day But of course if you are a formula one fan, then you know that the races or the Grand Prix day take place on Sunday So there's some quite a very nice correlation here But there's something else that I like that I like to do after bouldering and while watching formula one and that's baking So I can have some fresh bread for the week And since we already know that baking makes me happy and the formula one race take place on Sunday Then we can somehow assume that baking better Sunday makes me happy and that's the point Not for the next one. Let me Time series right and here what I want to show is the how my mood has evolved over time And also I want to highlight the daily weekly and yearly Seasonality and this is how my data set looks like it's only had like two columns And the first one is the timestamp of when I enter my mood and then the Y column is the the mood itself That which is a number from one to five and this is the trend We can see that it started quite high Christmas season. I was in Puerto Rico, which I love being there 4.2 very nice Then sort of went down a tiny bit, but I mean it's still okay 4.0 is still good. But then what happened here Covid again my computer stopped working. I was in New Zealand. I was alone No idea what to do one employee Just sadness was running through my heart, you know, and that was literally the lowest one of my life I'm willing to say I'm being so dramatic. I know but that's fine But then of course thing went better. I was able to enter Germany after a long time waiting and then it went back to normality and Yeah, it's all good now. I'm happy today. So Now for the weekly seasonality It's quite okay. There's nothing that great here besides that well Sundays once again It's the highest point of the week. You already know why and maybe Thursday evening Because as a good Puerto Rican, we love going on a Thursday. This day sucks Friday sucks Thursdays. What is it Thursday? You let the day you go out. You listen to your bad money You call your friends the best day ever Thursday Then there's your decisionality. It's quite okay. There's just I mean the difference is not that big It's that maybe here. I love the fall season. I mean fall in the north and hemisphere and Because I don't know star boss from pumpkin spice latte. That's we start to get yellow and orange my birthday is in October So a lot of good things happen here. I don't really know why I need to go out travel new Pokemon games They come out on November. So best thing of the year, you know I'm also I'm getting ready to go to Puerto Rico, which I usually do for Christmas season No for the daily and this is a cool one. We can see that for some reason the mood is higher in the mornings Why is that? Well? suppose We're going out tonight as we are do right. So we'll have been a good time We'll be talking chatting and sharing stories and whatnot. However at some point my app is gonna tell me yo It's time your mood, but I'll be like no, I'll do it tomorrow morning. That's the catch, right? So when I click the notification which I'll do tomorrow morning the date is still going to be Yesterday's day because the notification was from Thursday However, the time the app shows is the current time of course you're able to change it But I never do because it's in that cheating. So in other words, I'm looking Thursday's mood Using today's time and that's why it's usually highest in the morning because again if I didn't use my phone the last night because I Will have doing something very very fun No for the moods. Let's go back to it And here we have like an I stable with all the counts on everything But I went to include the longest trick here and in rad we have 14 days I believe that was doing Puerto Rico Good 24 days and I was like wow 24 days quite a lot one. So that went back to my map Pictures, you know notes. I'm always logging a lot of data random stuff. Yeah, my friends tell me I'm crazy And I realized that on this day at least in Germany McDonald's I to relieve the special edition Pokemon cars and I was like, huh, I won all of them You know when apparently to me 24 days to collect all of them So I ate a lot of McDonald's on those days to be honest one day I got like seven happy meals, you know, I call my friends and I've just come here Why McDonald's party what I seven happy meals? I don't like fries that I have fries and They also give you now apples in the happy meals like apples and some kind of ice cream So that was just like I just come over so I did it for 24 days and I got all of them by the way. Yes Then we have meh longest week seven days during COVID lockdown and then bad just 11 and the longest week lasted in two days and not for the weekdays we can see here that Usually I'm feeling rad on Saturday, so apparently some very good day and These are the activity that are more common in these kind of days in rad days and of course the percentage So we have a friends friends up here more in the rad days with about 35 percent Followed by aerial exploring good meal and photography, but we have others like Pokemon conference So today I'm gonna feel rad. I'm feeling very rad right now and then we have a formula one Which is freaking cool, right? Now the same thing, but I was good here the distribution is quite normal. There's nothing that spectacular I mean, I guess Mondays are good. So people like to complain about Mondays for me. They're just fine Another day. I'm it's the beginning of a new week new things new events, right? Like traveling to Argentina The activities these activities are more These are the activities that are more common in good days and there's a huge interesting fact here is that these activities they are more like Activities I do on my own like gaming writing coding watching Netflix or reading while The one that are rad are more social thing like friends exploring good meal photography So I feel like that was quite nice highlight then What else this is meh and we can see that may it does not happen Saturday and Sunday because there's nothing bad about Sunday Besides formula one and baking and these are the activities from the med day sick fucking Mac and travel I feel good to say that yeah, and then we have bad. Of course, there's nothing bad about Thursday This is bad Bonnie Puerto Rican day and then Sunday And Percenture of bad day that have this activity. Well here you have them Final words. I'm a happy human. I love my friends Pokemon watching formula one Exploding on photography is a perfect combination. I don't like flying or napping then of course baking or Sunday makes me happy and Looking bad at this data make me all fuzzy, you know and sentimental because it's nice You know to go back and look at all those moments and see the good things the bad things So thanks to the data and of course, thanks to all of you See it. Yeah, 25 Pokemon cars. Yeah, I Believe we have like one minute for question that took way longer, but yeah a few yes here This was the last one by the way So so thank you for being very vulnerable with data and showing I wouldn't have shown people that My mood and how much like in my pooping and stuff But I appreciate that This is a bit of a nerdy question I'm wondering if you try to impute which days that you didn't log data using any of the data around it So you said that there is 319 missing data points So can you have used some kind of an imputation method to say and it is also added to my second a second question Maybe you did had awful days, but maybe there's some bias and not logging those Good one. Yeah, it's to be honest. I did the first awful Three weeks three months ago Because something very weird happened and I was like, God, I'm actually what is this feeling and get us the awful feeling as for this first one Honestly, no, I didn't I didn't work forward to I didn't investigate more of those days What I didn't look any sort of activities because For me, it's not that important. It means just that there wasn't any highlight on that day However, there's always I'm always always logging the mood. That's something that I always do when I'm still doing it today It's been already like maybe like five years and my plan is to keep doing it until I don't know the app stuff working. Yeah Yes, are you worried anyway about being trapped? So you add an app and Been track. No, I'm not worried. Everybody tell me dude. You are crazy. Like my room is full of sensors I like tracking things. I'm a day runner. It's awful. It's a weird obsession. You know, like Right now I have like like tracking how much time it's it's it's weird. So I Don't know like I don't really care. I mean, it's of course when I publish all these things I change the names, you know, like Ariel. That's not her name, you know, and and something just to make You know, just to put an extra effort but like right now. I don't really I mean Google is rocking me. So I guess I just use that data for something else that is better, right? I mean, they're making money. So at least I can make you guys laugh. So, yeah, thank you so much We're now at time. Let's switch it out