Correlation is the degree and direction in which two variables are related or associated. Therefore, correlation coefficients are used to measure the strength of the relationship between two variables.

Let me tell you about them and their usefulness in #DataAnalytics 🧵

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Processing images digitally with Python is not only a fun task, but it's also very easy to do.

In the following thread🧵, let me explain how you can do it from scratch using simple operations on a matrix.

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First of all, as a context, PNG (Portable Network Graphics) images can naturally be represented by a 2D matrix of pixels.

At the same time, the pixels are made up of 3 RGB components, representing the colors Red, Green Blue.

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Therefore, after converting a PNG image into a matrix, 2 operations that can be performed very easily are:

▪️Flip vertically: invert the order of the columns of the matrix

▪️Rotate 90 degrees: invert the rows by columns, traversing the matrix inversely

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In addition, the illumination of the image can be modified:

▪️Apply brightness: add a constant value to all pixels of the image (e.g. alpha 0.1)

▪️Apply contrast: subtract a constant value to all pixels of the image

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You can also calculate the negative of the image. To do this, subtract 1 from each color (maximum value for each component) and save the absolute value of this subtraction.

The image will look like this (very cool, right?):

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One of the most common tasks performed in NLP is the identification of parts of speech (POS).

Therefore, it is useful to know the definition of the basic classes of POS:
1⃣ Noun
2⃣ Pronoun
3⃣ Verb
4⃣ Adjective
5⃣ Adverb
6⃣ Adposition
7⃣ Conjunction
8⃣ Interjection

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1⃣ Noun (NOUN): is the name of a person, place, thing, or idea.

2⃣ Pronoun (PRON): is a word used in place of a noun.

3⃣ Verb (VERB): expresses action or being.

4⃣ Adjective (ADJ): modifies or describes a noun or pronoun.

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5⃣ Adverb (ADV): modifies or describes a verb, an adjective, or another adverb.

6⃣ Adposition (ADP): is a word placed before (prepositions) or after (postpositions) a noun or pronoun to form a phrase modifying another word in the sentence.

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7⃣ Conjunction (CCONJ or SCONJ): joins words, phrases, or clauses.

8⃣ Interjection (INTJ): is a word used to express emotion.

Finally, you can find the list of universal POS tags in the following link:

Time series: types and their nature

▪️Stochastic: the property of being well described by a random probability distribution.

▪️Deterministic: system in which no randomness is involved in the development of future states.

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Therefore, stochastic time series can only be forecasted in a probabilistic sense.

Whereas a deterministic model will always produce the same result from a given starting condition or initial state.

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A time series (TS) is a series of data points indexed (or listed or graphed) in time order, with equally spaced time intervals.

Let me tell you a little about them, in the following thread 🧵

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Currently, time series analysis is applied in many fields, such as:

🔹Economic forecasting
🔹Inventory analysis
🔹Stock price forecasting
🔹Medical supplies forecasting
🔹Census analysis

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The 4 main components of a time series are:

▪️Level: the average value in the series if it were a straight line.
▪️Trend: the linear increasing or decreasing behavior of the series over time.

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and,

▪️Seasonality: the repeating patterns or cycles of behavior over time.
▪️Noise: the random variation in the series that cannot be explained by the model.

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A time series can be decomposed into its components using the following 2 methods:

▪️Additive decomposition: Level + Trend + Seasonality + Noise

▪️Multiplicative decomposition: Level * Trend * Seasonality * Noise

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MEENAKSHI AMMAN, MADURAI (TN)
#bharatmandir #navratri2021

A paadal Petra sthalam where Shiva took the form of Sundareswarar (the handsome one) and married Devi Parvati (Meenakshi).
Devi is also known by the name Angayarkanni (mother with the beautiful fish eyes).
@GunduHuDuGa

Devi Meenakshi emerged from yagna fire as a 3 year old girl when Pandyan King Malayadwaja and Kanchanamalai were praying for a child.
It is said that Devi was born with three breasts and there was a prophesy that her superfluous breast would melt away when she met her husband.

Devi ruled over Madurai and captured Indralok. She went on to capture Kailasha. When she saw Shiva, her 3rd breast disappeared and she realised that Shiva would be her consort.
The divine marriage was attended by all Devas and Sri Vishnu (as her brother) gave her hand to Shiva.

It is said that Indra found a swayambhu lingam at Kadamba Vanam. He placed it in Madurai where the kshetram stands. Here, Shiva is seen on the vehicle of Indra.
The Golden Lotus Tank is said to be the place where a golden lotus blossomed for the puja performed by Indra.

The Meenakshi Thirukalyanam festival is celebrated in the Chithirai month to mark the divine marriage of Meenakshi Amman. The festival includes a procession where Meenakshi and Sundareshwara travel in a chariot and Sri Vishnu gives away his sister in marriage to Shiva.

Did you know?
Ahilyabai Holkar was one of India's
greatest women rulers of all time.

Ahilyabai was Born on May 31,1725 in the village of Chondi,Jamkhed distt,Maharashtra to a man named Mankoji Shinde,who was the Patil(Chief) of a village and a member of proud Dhangar Community.

Despite the fact that girls' education was a farther dream in those days, Ahilyabai was homeschooled by her father.
Ahilya didn't belong to any royal family but in a twist of fate she is still remembered as one of the most revered Queen in the history.

While they were living their humdrum lives, one day Malhar Rao Holkar, commander of the Peshwa Bajirao & Lord of the Malwa stopped in Chondi on his way to Pune, where he couldn't help but notice a young 8yrs old Ahilyabai in the temple service feeding the poor & hungry.

He was so impressed by the sheer innocence&beauty with simplicity character of Ahilyabai dat he asked her hand in marriage for his son Khanderao Holkar.Just like that she got married to Khanderao in 1733 at a tender age of 8&became a bride of esteemed Maratha community of Holkars

But destiny had something else in store for her as her husband died in the Battle of Kumbher in 1754 leaving her widow at 29.Distressed Ahilyabai was to commit Sati when her father-in-law Malhar Rao refused to let it happen.

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