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Showing posts from February, 2017

What is deception?

If falsehood, like truth, had only one face, we would be in better shape. For we would take as certain the opposite of what the liar said. But the reverse of truth has a hundred thousand shapes and a limitless field.—Montaigne, Essays What is deception There are few definitions of deception. According to Merriam-Webster dictionary it is "an act or statement intended to make people believe something that is not true" [1]. According to Ekman [2], the deception involves acting in such a way which leads another person to believe something, that you, yourself, do not believe to be true. These definitions are broad. For example, if you think withholding information is not deception, you are mistaken. If you are acting in front of someone so, that you expect to present yourself in a certain way, you are deceiving that person. For example, if you like a girl of your friend, but you are not acting that way, you are deceiving your friend and the girl. Ethics of decepti

Don't lie to my eyes (II.)

In my last post, I was talking about pupil of the eye. When you are measuring the pupil, you are probably using an eye tracker. And the eye-tracker provides us with more data than just pupil diameter. So today, we are going to look at the other data and what can be done with it. Fixation and saccades The measures the most eye-trackers can give as are gaze location, blinking frequency, time of the fixation and pupil dilation. This information can help us understand what information people acquire and where their focus is. This can be done using the measurement of fixations and saccaddes, [1] Saccade is the time when your eyes are moving and it lasts about 15 - 40 ms. During this time, you are acquiring no information. Fixation is the time when your eyes stop and focus on a point. This is when your brain is processing the visual data. In silent reading fixation duration is on average 225 ms but may differentiate from 100 ms to 500 ms depending on the text. [2] Cues to de

Don't lie to my eyes (I.)

“Why do almost all people tell the truth in ordinary everyday life? —Certainly not  because a god has forbidden them to lie. The reason is, firstly because it is easier; for lying demands invention, dissimulation and a good memory.” – Friedrich Nietzsche, Human, All Too Human, II.54, 1878/1996 I have started this blog as my log to my master thesis. I was aiming to do some work on artificial intelligence. As it worked out, I will be working on method which should detect if people are lying when filling out online questionnaires. But I'm still going to use this blog. The reason is that this topic is closely related to evolution and even to artificial intelligence. The topic is still close to the idea of this blog. God-like properties, like knowing what you think, can be obtain via science and technology. If you want to tell if someone is lying, you have to look at his physiological responses. These physiological responses have evolved over millennia and are often

Best AI and Data science newsletters and podcasts

If you want to be updated about all the great stuff that's going on in data science, machine learning and artificial intelligence, you can go crazy. There is simply too much information and sources and you cannot possibly keep up with all of them. I'm facing this right now, as I have started my PhD. studies. I will be doing research into deep learning and the development in this area is so fast, that you would be amazed. So I've searched for resources that can do some filtering for me and have great added value. So here is the list of learning material, that will keep you updated and busy every week and is keeping me busy right now. Newsletters AI Weekly - Probably my favorite newsletter. All you need to know about news and learning material for AI. Data Science Weekly - I think, that the name speaks for itself. Python Weekly - This is not only about AI and machine l