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Mastering Development

Fast way to remove array of specific row values from 2D numpy array

I have a 2D array like this: a = np.array([[25, 83, 18, 71], [75, 7, 0, 85], [25, 83, 18, 71], [25, 83, 18, 71], [75, 48, 8, 43], [ 7, 47, 96, 94], [ 7, 47, 96, 94], [56, 75, 50, 0], [19, 49, 92, 57], [52, 93, 58, 9]]) and I want to […]

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Artificial Intelligence (AI) Mastering Development

arr = [[self.vocab.stoi[x] for x in ex] for ex in arr] KeyError: ‘-‘ [migrated]

I am trying to train a BiLSTM model on MultiNLI dataset. While training the model I am facing "arr = [[self.vocab.stoi[x] for x in ex] for ex in arr] KeyError: ‘-‘ ". Can anyone help me in fixing this issue? Code Snippets: path = (r"*******") TEXT = data.Field(lower=True, tokenize = ‘spacy’, tokenizer_language="en", batch_first = True, […]

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Mastering Development

Quick Select(kth smallest element)

Given an array arr[] and a number K where K is smaller than size of array, the task is to find the Kth smallest element in the given array. It is given that all array elements are distinct. enter code heredef solve(l,h,arr,pos): if(l>h): return -1 else: x = l for i in range(l,h): if(arr[h]>arr[i]): arr[x],arr[i] […]

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Mastering Development

How to create dynamic char array with dynamic row’s and column’s size

I’ve attempted to create a dynamic char array: #include <stdio.h> #include <stdlib.h> #include <string.h> void push(int *rows, char **arr, char *value) { int colum = strlen(value); arr = malloc(*rows * sizeof(char *)); arr[*rows] = malloc(colum * sizeof(char)); arr[*rows] = value; printf("%d %s\n", *rows, value); (*rows)++; } int main() { int rows = 0; char **arr […]

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Mastering Development

Asynchronous JavaScript Challenge question with setTimeout and recreating forEach

Please help! I’ve been trying to solve this on my own, but keep hitting the wall. Recreate the built in array method, forEach – Write a function that takes as parameters an array, arr, and a callback function, cb. The forEach function will iterate through arr passing each element and its index as arguments to […]

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Mastering Development

Multiple Errors During HDF5 to CSV conversion

I have a huge h5 file wich I need to extract each data-set into a separate csv file. The schema is something like /Genotypes/GroupN/SubGroupN/calls with ‘N’ groups and ‘N’ sub-groups. I have created sample h5 file with same structure as main file and tested the codes which worked correctly but when i apply the code […]

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Mastering Development

Create a JNI program to find sum of corresponding elements of 2 arrays

Please help me making two arrays and addition function for the following program.I already made one array and I am not sure on how to pass two arrays to the addition function. Create a JNI program based on the condition below:  Java file requests user to enter a numbers to determine the size of […]

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Mastering Development

C++ Compilation error when using async with Templates

I am trying to create a new thread with a recursive function call to the function itself: std::async(std::launch::async, &CQSort<typename T>::qSort1, arr, start, p-1); p is declared as an int as a local variable. The method qSort1 is implemented as void CQSort<typename T>::qSort1(T &arr, int start, int end) {…}“` I am getting a compilation error in […]

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Mastering Development

Inversion of matrix : Cholesky decomposition – Explicit version / intel MKL LAPACKE icpc version : Discrepancies in results

I have a C++ code which needs to compute the inverse of different matrixes (covariance matrixes). For the moment, there is a first version which explicitly performs a Cholesky decomposition by computing the factorization of triangular matrixes and after computes an inverse matrix. This explicit routine uses OpenMP #pragma directives for optimization, simply improvement by […]

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Mastering Development

Difference between dynamically created array (int *arr) and statically created array (int arr[]) when finding array size using pointer arithmetic

#include <stdio.h> int main(void) { int arr[] = { 1, 2, 3, 4, 5 }; //printf(“The size of the array is %d”, n); //assuming int 4 bytes printf(“%p – %p: %d\n”,(&arr)[1], arr, (&arr)[1] – arr); return 0; } I know that (&arr)[1] will give the address of next block of memory(memory address after the last […]