- Видео 27
- Просмотров 34 165
László Baranyai
Венгрия
Добавлен 27 мар 2020
Software tutorials for engineering students in Hungarian and English. Free software are used such as LibreOffice and R.
[EN] LibreOffice tips and tricks: On/Off controller
The video is going to demonstrate how to calculate a process (oil level in tank) with differential equation and adjust the result with upper and lower limit of an On/Off controller. The free software of LibreOffice was used to perform calculations.
Просмотров: 41
Видео
![[EN] Python: apply TensorFlow Lite model on your data](http://i.ytimg.com/vi/i3z-B7vKdGU/mqdefault.jpg)
![[EN] Python: apply TensorFlow Lite model on your data](/img/tr.png)
[EN] Python: apply TensorFlow Lite model on your data
Просмотров 14511 месяцев назад
The video shows how to use the created TensorFlow Lite model in RStudio. A full featured python session was opened and used. The libraries of numpy, pandas and tensorflow were utilized. Weather data were processed to predict sunburn damage of fruit (grape). The saved NN model was created in the project SHEET. Feel free to download from GitHub and play. Github link to the code and model: github....
![[EN] R Statistics: validation of multivariate regression using bootstrapping](http://i.ytimg.com/vi/gUO0s3Fh4Ps/mqdefault.jpg)
[EN] R Statistics: validation of multivariate regression using bootstrapping
Просмотров 996Год назад
The multivariate regression method is introduced first using the package PLS. Bootstrapping code is built gradually including selection of number of runs, random split to calibration and validation sets. Mean values and 95% confidence interval are calculated for determination coefficient (R-squared) and RMSE (root mean squared error).
![[EN] Scilab tutorial: nonlinear regression](http://i.ytimg.com/vi/-e_5sPZWDFY/mqdefault.jpg)
[EN] Scilab tutorial: nonlinear regression
Просмотров 1,4 тыс.Год назад
Nonlinear regression is presented with the leastsq function. Saturation curve is defined and the role of cost function is demonstrated. Data, initial guess and fitted curve are presented on chart. Quality parameters of determination coefficient (R2) and RMSE are calculated at the end. The advantage of presented approach is to be simple without the need of Jacobian function.
![[EN] Scilab GUI for 3D data plot](http://i.ytimg.com/vi/Co50jMUCpd0/mqdefault.jpg)
[EN] Scilab GUI for 3D data plot
Просмотров 1,2 тыс.2 года назад
Scilab is used to open CSV data including 3D position and measured value (temperature) in given position. An interactive 3D plot is created using scatter3d and the rotation angle property of the chart. Measured values are visualized with colors using jetcolormap and colors are assigned to each point. The GUI offers an open button to select file and sliders to rotate figure both horizontally and...
![[EN] LibreOffice tips and tricks: machine learning demonstration](http://i.ytimg.com/vi/zVMwXiSyMqk/mqdefault.jpg)
[EN] LibreOffice tips and tricks: machine learning demonstration
Просмотров 8482 года назад
This short video presents how artificial intelligence and machine learning can be built with simple rules. Data are classified using dynamic method and adjustable learning rate. Class means are recalculated at each decision. Threshold changes are presented on chart. Effects of modified start values and data rearrangement are not discussed.
![[EN] R Statistics: Support Vector Machine (SVM) kernel and gamma selection](http://i.ytimg.com/vi/Bwb_--gVEzY/mqdefault.jpg)
[EN] R Statistics: Support Vector Machine (SVM) kernel and gamma selection
Просмотров 1,6 тыс.3 года назад
This video will introduce briefly the Support Vector Machine (SVM) classification based on the package developed by TU Wien. Function is written to calculate classification accuracy for each kernel type and gamma value. The summary table created helps selecting kernel type and gamma value for a specific data set. The data of iris are used in this tutorial.
![[EN] Scilab and Xcos: Simulation of biochemical reaction](http://i.ytimg.com/vi/ltqnhWujgDk/mqdefault.jpg)
[EN] Scilab and Xcos: Simulation of biochemical reaction
Просмотров 1 тыс.3 года назад
The biochemical reaction is simulated using concentrations and kinetic constants. Function is made to compute changes (differential equation). Xcos model is built and all concentrations are calculated and presented in one vector. Behavior of the reaction can be observed. Video was made on linux desktop. If you are interested in LibreOffice calculation, see the corresponding video in the channel...
![[EN] QCAD technical drawing: cleaning head](/img/1.gif)
[EN] QCAD technical drawing: cleaning head
Просмотров 2 тыс.3 года назад
This video is intended to help building strategy on technical drawing. The element is a siever cleaning tool, which is made of plastic and when siever is shaked, this small piece is running on the surface to prevent aggregation.
[HU] QCAD műszaki rajz: tárcsa nézete és metszete
Просмотров 5163 года назад
A videóban egy tárcsa nézeti és metszeti rajzát készítem el a QCAD program segítségével. Figyelje meg a rétegek használatát és a szerkesztést segítő eszközöket, mint párhuzamosok, letörés, stb. A segédvonal réteg tartalmát (vetítések) elegendő elrejteni, nem szükséges törölni. A szerkesztés során az érthetőségre törekedtem, ami nem a leggyorsabb (tükrözéssel gyorsabb lesz).
[EN] R Statistics: polynomial regression with confidence interval
Просмотров 1,5 тыс.3 года назад
You can see how simple linear and polynomial regression work on the basis of lm function. The confidence interval of the model and data are also presented. A new function called linplot is created to produce desired chart comfortably. R and RStudio free software are used to demonstrate the method.
[EN] LibreOffice tips and tricks: electrical engineering calculation
Просмотров 2504 года назад
Electrical engineering calculation is performed on a circuit with 2 parallel voltages and one resistance. Kirchhoff's laws are used to build parametric equations. Making equations is commented step-by-step. Equation coefficients are organized into matrix and results are calculated with matrix and vector multiplication.
[EN] Scilab image processing: segmentation using manual threshold
Просмотров 1,6 тыс.4 года назад
This video presents the color segmentation using normalized color values. The user interface is extended with a slider so that we can adjust threshold value manually.
[EN] Scilab image processing demo with GUI
Просмотров 2 тыс.4 года назад
Graphical User Interface (GUI) is created in Scilab for image processing. Two buttons are placed on the interface for opening pictures (1) and normalize colour (2). It is demonstrated how to add UI elements with relative position and make flexible UI, and the usage of callback functions is also presented.
[EN] R statistics: linear discriminant analysis (LDA)
Просмотров 10 тыс.4 года назад
Linear discriminant analysis (LDA) is presented using the package MDA (Mixture and Flexible Discriminant Analysis). Descriptive statistics is calculated on IRIS table, principal component analysis (PCA) is performed. Correct classification is calculated based on diagonal values of the confusion matrix. Cross validation is presented with randomly selected data (20%).
[EN] LibreOffice tips and tricks: nonlinear curve fitting using Solver
Просмотров 2,2 тыс.4 года назад
[EN] LibreOffice tips and tricks: nonlinear curve fitting using Solver
[EN] LibreOffice tips and tricks: transportation problem solved with Linear Solver
Просмотров 3734 года назад
[EN] LibreOffice tips and tricks: transportation problem solved with Linear Solver
[EN] LibreOffice tips and tricks: business plan calculation using Linear Programming
Просмотров 3384 года назад
[EN] LibreOffice tips and tricks: business plan calculation using Linear Programming
[HU] LibreOffice haladó: létszám tervezése lineáris programozással
Просмотров 2294 года назад
[HU] LibreOffice haladó: létszám tervezése lineáris programozással
[HU] LibreOffice haladó: függvény illesztés Solver bővítmény segítségével
Просмотров 5194 года назад
[HU] LibreOffice haladó: függvény illesztés Solver bővítmény segítségével
[EN] LibreOffice tips and tricks: make trendline using solver
Просмотров 2,7 тыс.4 года назад
[EN] LibreOffice tips and tricks: make trendline using solver
[EN] LibreOffice tips and tricks: simulation of biochemical reaction
Просмотров 1644 года назад
[EN] LibreOffice tips and tricks: simulation of biochemical reaction
[EN] LibreOffice tips and tricks: making PID controller.
Просмотров 1,8 тыс.4 года назад
[EN] LibreOffice tips and tricks: making PID controller.
[EN] LibreOffice tips and tricks: solving differential equation with Euler's method
Просмотров 3204 года назад
[EN] LibreOffice tips and tricks: solving differential equation with Euler's method
[EN] LibreOffice tips and tricks: daily temperature fluctuation model
Просмотров 1344 года назад
[EN] LibreOffice tips and tricks: daily temperature fluctuation model
[EN] LibreOffice tips and tricks: 3 phase ACV calculation
Просмотров 4984 года назад
[EN] LibreOffice tips and tricks: 3 phase ACV calculation
[HU] LibreOffice haladó: napi hőmérséklet ingadozás szimulációja
Просмотров 844 года назад
[HU] LibreOffice haladó: napi hőmérséklet ingadozás szimulációja
thanks a lot !
Szuper videó!
This really helped me in a pinch. Thanks!
Excellent explanation, clear, targeted and very oriented, congratulations. Regards
Thank you. :)
very well explained
can you please send me the source code thank you In advance
here is my gmail
You can find at github.com/lbaranyai/Scilab/
Nice.. 👍
Very helpful! Hey do you stil have the sci file? If so, are you able to share that with me?
I have found the files and uploaded to GitHub @lbaranyai
@@laszlobaranyai73 thank you so much!
Hello, i just want to ask if its possible to detect other colors other than red, green and blue? For example if I can also detect brown, black and white using a similar code?
Yes, it is possible. Just transform the RGB values to brown scale intensity. Specific color, black and white are easy in HSI.
Even zooming, the codes are far from viewing.
It was recorded in 1920 × 1080, try to watch in size close to this.
@@laszlobaranyai73 if the codes could be displayed here, that will be great.
you are blind
Hello, where can I find the mda library
Hello. Find "packages" tab on screen and click "install". You can search internet for "tutorial how to install R packages in RStudio"
Was thinking that this video will showcase an add-on that will add AI functionality to CALC, but nevertheless I have learned so many new things that I never knew existed in CALC such as the solver. Thank you
where can I find your website with the data set and course code please?
the dataset is built-in, called 'iris'. The video shows the code, it is not available separately now.
Thanks!!! Your vid help me a lot at my laboratory collage work!!
IITM wale copy mt Krna
Köszönöm a látogatást és a kommentet.
Jó a példa, de szerintem a kivitelezés azért rossz, mert a munkavállalónak egésznek kell lenni. Nincs olyan h 0,6 Professzor vagy 0,2 Technikus.
Részmunkaidőben van, ha nem napi 8 órát dolgozik, csak 4 órát, az 0,5 főnek számít. Munkaügyi szempontból.
@@laszlobaranyai73 De 0,666 olyan nincs. Ahogy gyakorlatilag 0,027 Technikus sincsen. Mert nincs olyan akit 15 perc napi munkáért fizetnek. Persze a példa jó, és sokat tanultam belőle, így köszönöm. Csak ez sztem nem reális egyedül
@@9fenomeno266 Sajnos van. Tapasztalatból mondom. Ráadásul jellemzően nem is egy főböl jön össze. Ettől függetlenül nyugodtan állítsa be a kerekítést a megoldóban és akkor csak és kizárólag egész érték jöhet ki. Ha valóban érdekli mennyire reális egy ilyen nem egész érték, nézze meg a statisztikai létszám vagy FTE (full time equivalent) kifejezéseket munkaügyi táblákban.
invalid error is coming in my code
there can be many reasons for that, please follow the video step-by-step. The tutorial is not working or you do something else?
Thanks for the video!!!
Thank you sir
Excellent tutorial. Simple and to the point. Thank you
Would this work for a third order polynomial? eg. y = x^3 + x^2 + x
Yes, it will work. What you need is an additional parameter in the model: x3 <- x*x2 lm(y ~ x+x2+x3)
Appreciate your Efforts for Linear Discriminant analysis. Its very helpful for me. I want to apply Discriminant Factor Analysis technique after MANOVA, and want you to assist me. I will highly consider your Suggestion
Well, this comment section is not suitable for detailed discussion. Please submit your question to ResearchGate.
Thank you. Excellent work. Your explanations are very clear and complete. And the technique is really amazing and somewhat unexpected for a "simple" spreadsheet app. Well done, sir!
You prolly dont care at all but does someone know of a tool to log back into an Instagram account..? I somehow forgot the account password. I would love any assistance you can offer me
This was amazing! Very easy to understand.
Nice video sir, Do you have the code ?, I want attempt the code while watching the video ...
Thanks for the comment! I uploaded to GitHub: github.com/lbaranyai/Scilab/blob/main/imaging_demo.sce