Preliminary data analysis for time series data?

More Kamal Nor's questions See All

Pearson Correlation for Time Sereis?

I have 80 variables containing measures of temperatures. At each hour, measures are recorded for all the 80 variables. As such the length of each dataset corresponding to each variables has the...

05 June 2019 9,695 3 View

Strong correlation between predictors for Neural Network Input?

I need to ask this question before I go to sleep Hope when I wake up there will be some answers :) I have around 80 variables as inputs to my Neural Network. I am wondering if some of these...

05 June 2019 1,692 5 View

Distribution Normality and statistical tests?

Do we need to have a normal distribution to run statistical tests? What about non normal distribution?

05 June 2019 5,938 6 View

Data Preprocessing : Missing values or outliers?

Dear All If in your dataset there are missing values as well as outliers, which one you treat first? Replace missing values (with mean, mod, liner interpolation etc..) or deal with the outliers?

04 May 2019 9,609 4 View

Any Public Data for Gas Turbine Reliability Study?

Hi. Is there any public gas turbine data that i could use for my neural network?

03 April 2019 208 1 View

How to avoid poorly written papers that waste time to understand?

Hi there...a bit down here. Newbie PHD candidate. Its the day that you start off with full throttle motivation and a mind set on a specific subject, u collected some papers on the said subject and...

01 February 2019 2,866 3 View

What is stage stacking method for multistages compressor?

I need guidance. Been reading a few papers but cannot get the idea of stage stacking method. I just need a broad explanation.

31 December 2018 1,462 2 View

Why turbomachines are adiabatic?

Why turbomachine such as gas turbine considered adiabatic when heat is injected for combustion???

31 December 2018 3,168 5 View

Neural Network and noisy data?

Do neural networks works well with noisy data?

10 November 2018 4,368 0 View

Which neural network to choose?

I need to perform a performance prediction of a machine base on multi parameters data. The datas are sensory data. Which neural network should I consider in doing this study?

10 November 2018 957 6 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What is your perception on using visual analysis or quantitative approaches to evaluate data from single-case research designs (n of 1 trials)?

Results of single-case research designs (i.e., n-of-1 trials) are often evaluated by visually inspecting the time-series graph and computing quantitative indices. A question our research team is...

03 March 2021 687 1 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Ersegun Deniz Gedikli

I would suggest Nathan Kutz's "Data-driven modeling and scientific computation" book as guidance.

Kamal Nor

Thank you. I will look into it

Flavio Maria Emanuele Pons

I totally agree with Ahmadi Murjani. However, a good manual is the Introduction to Time Series Analysis by Brockwell and Davis, which can be found online for free in a version from 2002. Suggesting anything without knowing the type of data and the research objective is quite pointless.

José Rafael Fuentes

Hi,

Before performing complicated analysis, I would look for possible correlations between your variables. For example, if you have a time series about earthquakes you could start by looking if there is any correlation between the magnitude of the earthquake and the time until the next, or something like that.