What is the best way to encode categorical variables in datasets with many features and avoid increasing dimensionality of the dataset?

I am working with a large dataset that has many categorical variables with many classes in each variable. I want to encode the categorical variables without increasing the dimensionality of the...

31 January 2021 6,986 3 View

If you have the authority to distribute COVID-19 vaccine to which age group or career would you begin with?

Would they be an A: elderly B: women want to be pregnant, C: health care workers, D: immune compromised E: military servants, F: or others? Please specify

14 December 2020 1,108 61 View

How to test an automatically annotated dataset for sentiment analysis?

Dear all, I have annotated a dataset of 7200 tweets with three sentiment classes: positive, negative and neutral. After training and testing multiple classification models with 6000 training +...

17 October 2020 8,501 3 View

Does electromagnetic fields harmful to our bodies?

Does magnetic field can heat the human body? According to the International Commission on Non-Ionizing Radiation protection (ICNIRP), there is a maximum allowable magnetic field exposure to our...

14 October 2020 7,594 3 View

I would like to ask how can i get adiponectin as drug to increase insulin sensitivity in obese people ?

Adiponectin as a drug

23 January 2020 8,571 1 View

Why some journals do not have an impact factor?

I have read many topics to understand the impact factor of journal. The confusion is how some journals, for example in Springer, do not have an impact factor? From discussion in this website and...

02 March 2019 8,220 3 View

Is there any articles or papers regarding Agricultural Extension Specialist?

Agricultural extension specialist topics regarding agricultural and veterinary sciences.

31 December 2018 9,622 12 View

What kind of task can be performed with "Twitter News Corpus"?

I have collected above 2.5 millions of news headlines from the newswires in Arabic (BBC, CNN, Aljazeera, AlArabyia, ....etc.) posted on twitter from 2008-now. I am asking about what kind of task...

04 May 2018 9,606 5 View

How to assign polarity for words in sentiment lexicon?

I have read many papers explaining how to assign polarity to each word in the lexicon of positive and negative terms. Some of them such as SentiWordNet assigned 3 polarity scores(Positive,...

02 March 2018 3,977 5 View

How to perform sentiment analysis for Arabic text using a hybrid approach combined a dictionary of positive&negative words and machine learning algos?

I have built my own sentiment lexicon using word embeddings and know I am stuck in how to add more features in order of train my machine learning algorithms. Please help... Thanks

02 March 2018 5,767 4 View

Research on Supply Chain Management in Indian context?

Hi, I am planning to apply for the PhD degree in the Supply Chain Mgt. with specific area of "Cold Storage warehouses" during Pandemics and wars. Where lock downs and shut downs are frequent....

02 March 2021 285 2 View

Tooth extraction and subsequent dental implant placement in Sprague-Dawley rats induce differential changes in anterior digastric myofibre size and ?

01 March 2021 7,254 3 View

Does the circuit modeling for planar monopole antennas using Foster canonical forms give good approximation?

Hi researchers, I am searching for some accurate way to do the circuit modeling of planar CPW-fed monopole antennas. I have gone through the literature where mostly circuit modeling is done using...

28 February 2021 7,016 1 View

Why cannot world and community leaders be gentle? Where did ethics of care go?

The whole world is in a mess and paused. We all are tired of seeing hypermasculinized and destructive leaderships all around us. This world has seen enough of the aggressive patriarchal social...

23 February 2021 292 7 View

How COVID-19 has affected mental health?

The pandemic has led to depression and anxiety and its negative effects shouldn't be ignored. However, it has also led some people to become more resilient! What do you think? Thank you.

21 February 2021 4,733 19 View

What is the most prevalent drug related problem in the developed countries?

Detecting the drug related problems is an important step in the pharmaceutical care plan

21 February 2021 5,421 3 View

Can medicinal plants really play an inherent rule in the COVID-19 tackle?

Numerous scientific reports cited plant extracts with potential antiviral activity and even anti-COVID-19? Why these findings are neglected? I remember very well the warning released by the WHO to...

17 February 2021 2,141 9 View

How can I interpret a ratio variable?

Dear colleagues, I am running a regression in which I have the following regression FoodExp = 67.04 DepRatio +.....e My interest is in the interpretation of the coefficient on the dependency...

16 February 2021 2,058 2 View

Can I simply dilute 25% NH3 solution to 10% solution by pouring water in tank and circulating with pump?

Is there any heat of dilution which I need to take care by putting some circulation cooler? Will there be any significant ammonia emission in the process?

09 February 2021 5,943 2 View

Patients with chronic kidney disease could get COVID-19 vaccine?

04 February 2021 278 4 View