Disclaimer : Labs and Lectures concern the course Human Computer Interface(HCI) which I follow with my M2 "Virtual and Augmented Reality" at IPParis.
HCI research
I used google scholar to find an article about HCI and I've found "Human–computer interaction-based Decision Support System with Applications in Data Mining" on Elsiever's database. I am very interested about this topic because it links data mining and HCI, I've always heard about data mining without exactly knowing what it is. This article was written by Yuliang Yun, Dexin Ma, Meihong Yang and published on 24 July 2020.
We will start with some definitions. Human-Computer Interaction studies the interaction between people and computers : it treats "basic" interaction such as keyboard and screen but also upcoming techniques such as eye-tracking or gestures reading. Data Mining describes a method to obtain useful knowledge and information by analysing data in database : it's a very important field currently. Decision Support System is a combination of the information system and decision-making technology, in fact it represents a "link" between those previous definitions. The basic architecture of DSS is :
The proposed method used Utility function. The utility is the mapping from preference set X to the real number set R ( s is a fund obtained with a probabilty p and t is the loss amount) . More simply : the utility value of the most favorite event is 1 and the least favorite is 0. We will represent by curves named Utility curve.
The architecture of their DSS is :
The next part of the article present their expreiment. they've tried different methods of data mining such as : decision tree, Bayes network, association rules, concetp lattice and clustering. There are two key parameters in their work alpha (balacing two terms of formula and p denoting the probability of the fund S. In the next graphics accuracy means the number of positive evaluation / total number of evaluation :
We can conclude p need to be set to 0.6 and alpha to 0.5. To conclude, Data mining based DSS can effectively predict and analyse enterprice decisions. They've designed a visual decision making system, using fata mining techniques.
The Ultimate Display
This
article was pubished in 1965 and written by Ivan E. Sutherland. In 1965, digital computer don't looks to what we have today : the lastest update permit to plot dots and we started to talk about area-filling pictures. M. Sutherland affirms that tomorrow's computer will be used through a typewriter : True. He adds an another input device : tablet using the example of
RAND tablet (the ancestor of every tablet) and voice input : again he's right. The second part is named "Other Types of Display". He thinks computer should serve as many sense as possible (more than sight and sound). He gives two example
Link Trainer and
General electric "handyman" to add a force display on computers. M. Sutherland writes also about eye-tracking : and again he's right. We can also add that he describes Virtual Reality because those computers display in higher quality what you are looking at. For him, computers don't really need to follow rules of the real world and must help us to understand things that we dind't see (wind on a shape - negative mass). His last sentence concerns the ultimate display : a chair in a dedicated romm which can transform what is all around you : isn't it Virtual Reality?
In this picture the only sense which isn't displayed is taste and smell, are we near the Wonderland Alice walked in?
Input device : Keyboard adapter for Xbox controller
By using this keyboard you could text on xbox (chat in game or in the menu or the store) and it also add a jack plug (for headsets). Without this the method is simple you have a virtual keyboard on the screen and select each letter with the joystick and press (a) to write it, it's long and tedious. To give you some numbers you write 10 times faster with this input device. You may think it's a good things and succeed a lot but it's not, look at its ergonomy :
Xbox controller without it
Xbox controller with it
Ergonomy is horrible I couldn't take it properly when the keyboard is attached.
If we go again on the numbers I gave you : text 10 times faster, okay cool. Price on launch : 19.99$, okay. This don't look too expansive but if you think about your game experience, do you text that much? No, you don't really text, maybe, in average (my figures), 6 sec/hour : 1/600 of hours... Don't seem to be very worst to have it.
To conclude, the ergonomy is bad, you don't really need it : not a success, microsoft do not sell it anymore. Moreover, to access only the vocal chat part (plug jack) this item could be used :
Note : you don't need it anymore, nowadays xbox controller are sold with a jack plug
