Numpy

Hi Sir, the file which contains the content of Numpy is not present in the Jupyter Notebook file of my Cloudex Lab and in whatever files are there, no content is existing in them. 

All the files that are in 893b something bytes do not have any content in them, all the files are empty, only a few files that are in (kb) the file have content exist in them like four cast churn email projects like files have context until none of them have any content in it...

Now what should I do, either you check my lab again and provide me the file with the content or provide me its source.......

def multiply_loops(A,B):
    C = np.zeros((A.shape[0],B.shape[1]))
    for i in range (A.shape[0]):
        for j in range (B.shape[1]):
            for k in range (B.shape[0]):
                C[i,j] = (A[i,k]*B[k,j])+ C[i,j]
    return C

I think this should be the code for multiplication of arrays instead of what is mentioned in slide 45. Can anyone please confirm?

import numpy as np
x = np.zeros((2,3,4))
print(x)
x.ndim

You can use x.ndim to check the rank of an array.

Hi, 

Which is the repo where sandeep sir is pushing the code?

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rows_on=np.array([False,False,False])

c=np.arange(9).reshape(3,3)

Hi ,I tried rows_on =np.array ([False,False,False])

c [rows_on] is still giving me the first row .

Please help.

Can we upload a CSV file from my own directory to the lab and work in Jupyter notebook?

Hi, Here multiply_loops and multiply_vector functions which are used to compare performance between array and numpy does not return same output. It is not a stopper just want to mention it.

An unknown error occurred while loading this notebook. This version can load notebook formats or earlier. See the server log for details.

Hi Team,

I  am not able to load the jupiter notebook.Please help

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At 26:15, sir changed the datatype from 16 to 64, what's the use of changing the datatype?

At 54:17

x[0:2,0:2,0:3]

0:2 row

0:2 col

What is 0:3 ??

What will be cut of elements of 3rd??

aT 36:02

i DID NOT UNDERSTAND.

What does linespace do??

What do you mean by "evenly spreated??

Please reply.

i am unable to access the recording of the session

---------------------------------------------------------------------------
IndexError                                Traceback (most recent call last)
<ipython-input-30-4e4923c47760> in <module>
----> 1 a[row_on]

IndexError: boolean index did not match indexed array along dimension 0; dimension is 7 but corresponding boolean dimension is 3???

Hi,

I have a question related to SQL

Which is more faster DISTINCT or GROUP BY?

hello,

Did linspace create an array with float value only or is there any method of creating an array with integer values using linspace?

I am trying to plot a graph, but not able to see the figure

please help me why so?

i just explore the courses once again , I just found there not an IIT roorkee name on certificate

But when i applied it was .

So my doubt is , when i will complete the course it will it show IIT roorke name with cloudxlab or not.

If we have created a variable as below :
c = np.arange(0,6) then Try to do b = c.reshape(2,3) it will work fine.
But, If i try to convert a as below :
c = np.arange(0,5) then Try to do b = c.reshape(2,2) it will give an error as :

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-43-66f9f4d8360b> in <module>
----> 1 b = c.reshape(2,2)
      2 print(b)

ValueError: cannot reshape array of size 5 into shape (2,2)

So can I consider that the value of arange() should be multiple of the reshape() arguments ?

Hi, 

I have completed "Python for Machine Learning - EICT, IITR" course and even recieved Certificate for it. But now sudenly it shows that course is incomplete and also its affecting the progress of my other course "Machine Learning Specialization - EICT, IITR" of which it is a part. Kindly look into it and correct the error. If there is any information that is required from my end than do let me know.

Hi Team,

I have completed 2 of the EICT, IITR courses & I'm looking for more courses. Can you let me know - where can I find more EICT, IITR courses ???

When I click on Notebook I am gettin 404: Not Found !

Can you help?

Hi Team,

I have completed the course by the name - "Python for Machine Learning" much before the due data. When can I expect the certificate from - EICT, IITR ?

PSA for the same

I have completed "Course 1: Python for Machine Learning " from "Machine Learning Specialization EICT, IIT Roorkee". How can i apply for the certificate of above Course 1? and when it will be available for download?

     i am getting this Error. Resolve this Error..

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Cnn someone tell me what does this index error mean?

Hello 

I do not see / ml / python folder in my Jupyter. Can you suggest?

regards,
Suresh

What if we want to create a random number between given range i.e. between 10 and 45 ?

Help me understand the error below:

Thank you.

Hi,

Where to find the codes used for each video session?

Thank you.

Hi, 

Can you please recommend a good book or notes material for NumPy so we can have all the methods in NumPy handy.

Thanks

@malavika @sandeep

Hi

Can you please help me fixing the problem. I am unable to connect Jupyter kernel. I have shared my problems several times. Also is there any link as i have loaded anaconda in my PC. Will that cause any problem for running the Jupyter kernel.

Kindly suggest on urgent basis please.

Regards

Meena

As I have taken courses in both ML and Big data, and also have seen applications in industry,

have generic questions :

 Can we stream big data (apart from tweepy example) , using spark etc. for performing ML or AI on it?

Q 1 - 

Q 2 - Please share some links to read and understand Statistical Inference.

Slides are not getting populated. Can you please help here.

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Hi,

When should Session 11 and session 12 video be watched, ie before doing upcoming exercises or after? They ae not mentioned in course but are available in CloudXLab youtube channel playlist.

Thanks.

Hi team,

I'm facing two issues in learning portal :

1> My XP score is got getting updated even when I progressed 100%  of the module.

2> Can you help me with the name of the module which have linear algebra using numpy, as I couldn't see it.

Sandeep Giri, 

Thanks 

Udit Agarwal

Hi,

Why do some numpy functions need single parantheses ,'( )' and some double, '(( ))' ?

Eg:

import numpy as np
a=np.ones( ( 3,4 ) )        #double

&

import numpy as np
a=np.arange( 3,21,3 )    #single

Hi,

In the below image, I was using the sort_index method but do not understand what does this property "inplace" do.

This is written in the Pandas documents:

inplacebool, default False

If True, perform operation in-place.

Could you please explain this ?

Every time I start my session, I am getting below error message, please someone fix it...

404 : Not Found

You are requesting a page that does not exist!

Hello sir, if you have videos in which things are systematically explained without any question in between, that would have really not confusing. Sorry for saying like this. But as a beginer I am finding difficulty in understanding the content, when the discision goes out of the track due to some questions in between. I understand that these are recorded session of live youtube webinar. But fresh recording for online students and biginers like me will really help. I don't know how far you will respond to my request. But this what is my view, wanted to share.  Kindly see if you can help us (me).

Otherwise I love the concept of keeping both theory and lab side by side. very useful.

Best Regards

Ajit

Great learning, however rows_on is a litlle confusing,

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Hi,

I tried to add the Numpy files, however I receive the following error.

[shenyliju3115@cxln4 ~]$ git clone https://github.com/cloudxlab/ml/blob/master/python/Python%20-%20Numpy.ipynb/
Cloning into 'Python%20-%20Numpy.ipynb'...
fatal: repository 'https://github.com/cloudxlab/ml/blob/master/python/Python%20-%20Numpy.ipynb/' not found
Please advise

Hi,

I tried to 

Sir, can you explain slide number 142?

Sir, can you make me more clear about slide number 74?

Can't see numpy slides, Can someone send me at my registered mail id.

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I am trying to multiplying two comaptible matrics with multiply_loops method and I am getting Index Error. What is wrong it it?
---------------------------------------------------------------------------
IndexError                                Traceback (most recent call last)
<ipython-input-70-839408fd91d4> in <module>
      1 get_ipython().run_line_magic('timeit', '')
----> 2 multiply_loops(X,Y)

<ipython-input-60-53bbbd92561c> in multiply_loops(A, B)
      3     for i in range(A.shape[1]):
      4         for j in range(B.shape[0]):
----> 5             C[i,j] = A[i , j] * B[ j , i ]
      6     return C

IndexError: index 2 is out of bounds for axis 1 with size 2

Hey Team,

I am having problems in running Numpy in my Jyputer notebook for the machine learning section of the course (even after importing it correctly into the Jupyter cell) and also while attempting question (after lectures) the solution is not working (neither the answer part nor the hint). Please look into the problem and update me as soon as possible.

@Admin

The  lab shows "Not connected " and Method Not Allowed " Error most of the time , I am Wasting my useful time , not able to do course in  time  ,Please do the Needful 

Hi Team,

I'm unable to access lab since Saturday- When I try to use the lab, my system completed hanged and I need to shut down. 

So currently I can proceed only with theory part. I restarted my server but the same issue persists with lab.

Kindly help!!

Thanks

Regards,

K. Uma Maheswari

Hi Team, 

I am not able to see the Python in folder cloudxlab_jupyter_notebooks as shown in video above. I tried using below command in web console to clone it but it did not work. please help on this to get the python files of numpy and ML into folder

git clone https://github.com/cloudxla...

please find the error message below :- 

[krishnarauniyar7777751@cxln5 ~]$ git clone https://github.com/cloudxla...
Cloning into 'cloudxla...'...
fatal: repository 'https://github.com/cloudxla.../' not found

Also, i donno why i am not able to attach screenshot. or is attaching attachment feature has been removed?

i can see icon to add attachment but i am not getting how to do it bcoz its asking url or link something like that. i am not able upload document from path of my folder.

please help on this too

Hi , Need one clarification, is Python - Numpy file will be automatically available in "cloudxlab_jupyter_notebooks", or we have add ?

Hi,

I am a bit confused with "NDIM". Could you please help me to understand this?

Take below example:

b = np.array((1,2,3))
print(b)
print(b.ndim) ## it prints 1
ar = np.ones(b)
print(ar)
print(ar.ndim) ## it prints 3

I think, for "ar.ndim" it should print 2 since it contains array with 2 rows.

i cannot find the numpy folder where is it

<function matplotlib.pyplot.show(*args,="" **kw)=""> this message while plotting graph using matplotlib

when i try plotting a graph using matplot i get this message <function matplotlib.pyplot.show(*args,="" **kw)="">

Hello
I am not able to understand what is wrong with B1 array in image and why is it giving an error and what does it mean that it can only assign to iterable
please explain

Hello everyone

what is np.RAISE? in Numpy
whien i execute it the
output is:-

Type: int
String form: 2
Docstring:
int(x=0) -> integer
int(x, base=10) -> integer

Convert a number or string to an integer, or return 0 if no arguments
are given. If x is a number, return x.__int__(). For floating point
numbers, this truncates towards zero.

If x is not a number or if base is given, then x must be a string,
bytes, or bytearray instance representing an integer literal in the
given base. The literal can be preceded by '+' or '-' and be surrounded
by whitespace. The base defaults to 10. Valid bases are 0 and 2-36.
Base 0 means to interpret the base from the string as an integer literal.
>>> int('0b100', base=0)
4

this doesnt make any sense to me

Hello Sir, How Can We Do slicing in 3d array ?

how can i print an 2d array in form of table in jupyter notebook
to increace the readability of matrix
Ex

array([[0.68790961, 0.08658011, 0.9945073 , 0.28984779],
[0.5957338 , 0.9734188 , 0.8788657 , 0.77243661],
[0.39967111, 0.62234654, 0.45871602, 0.3822276 ],
[0.62753945, 0.84524739, 0.97096926, 0.75292164]])

Sir, i have completed all the questions from unit 3 but then also level progress is showing 96% please help me.

Hi, tried to clone the ml bundle from github.
[abhirupmitra20128160@cxln5 ~]$ git clone https://github.com/cloudxla...

It shows error fatal: cannot create directory at 'deep_learning/data/mnist': No space left on device
warning: Clone succeeded, but checkout failed.
You can inspect what was checked out with 'git status'
and retry the checkout with 'git checkout -f HEAD'

Could you please increase the size?

HI,
when I am loading the course page.
by default, in the Notebook(right side) Python.iynb file is loading
I want to change this into another file (test.iynb).

currently if i want to open any file its opening in the new tab.
I need that file,here in the right hand side.

hello Sir when I try to find the rank in my pycharm with anaconda interpreter,it shows numpy has no attribute 'rank'
please help me fix the issue

Im from a non-CS background. Can you explain the pointers way of handling elements in numpy array? Why is that the parent list is updated despite only the new list is being modified? I read that pointers keep track of the numbers by assigning some address associated with them. But still, this concept remains elusive to me.

Hello Sir,
I am currently in final year pursuing Eelectrical engineering. I have taken up the course on python for machine learning and likely to take up machine learning course in the coming days. Sir I want to know how machine learning can help me expand my research in electrical engineering especially in the field of electrical machine and power electronics and power system. I searched on internet but the answers were not lucid and lacking info.
please explain in broader way take the three fields into account.
Thank You

I have completed project and 60% course now how will i get certificate

Hi Team,

How to download the slides. NO OPTION TO DOWNLOAD THE SLIDES.

Hi Team,

The python files which are shown in the tutorials are not present in my location. the directory /ml/python is also not available in my location.

Hello Team,
Can I have the slides shown in the video. There is no option for download.