A backtest of 1% VaR with 100 observations yields 20 exceedances I There are three groups of two exceedances (0000110000) one group of three (00001110000) and one group of four (000111100000) I The other seven exceedances are isolated

A backtest of 1% VaR with 100 observations yields 20 exceedances I There are three groups of two exceedances (0000110000) one group of three (00001110000) and one group of four (000111100000) I The other seven exceedances are isolated

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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What does ?_i represent in the context of maximal margin classifiers. λ_i= y_i ((w^T x_i+b))/(||w||) Choose all that apply. a. Cosine similarity b. Geometric margin c. Distance of x_i from hyperplane d. Class boundary
The null and alternative hypotheses for a hypothesis test of the difference in two population proportions are: Null Hypothesis: Alternative Hypothesis: Notice that the alternative hypothesis is a one-tailed test. Suppose proportions_ztest method from statsmodels is used to perform the test and the output is (1.13, 0.263). What is the P-value for this hypothesis test? Select one. A 0.1315 B 0.263 C 1.13 D -1.13
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Q: Given Email B with its feature vector. Compute the probability of email B being “spam” and “ham” using Naïve bayes algorithm and then finally assign class label (spam or ham). P(spam) = 0.65 Email B = < 0, 1, 1, 1 >, = < count(meeting), count(enron), count(dating), count(hi) > P (meeting | spam) = 0.6, P (meeting | ham) = 0.02 P (enron | spam) = 0.4, P (enron | ham) = 0.001 P (dating | spam) = 0.7, P (dating | ham) = 0.005 P (hi | spam) = 0.3, P (hi | ham) = 0.09 Course/Subject: Introduction to Data Science.
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Correct answer will upvoted else downvoted. segment of place where there is length n there are k climate control systems: the I-th climate control system is set in cell artificial intelligence (1≤ai≤n). At least two climate control systems can't be put in a similar cell (for example all man-made intelligence are particular). Each climate control system is characterized by one boundary: temperature. The I-th climate control system is set to the temperature ti. Illustration of portion of length n=6, where k=2, a=[2,5] and t=[14,16]. For every cell I (1≤i≤n) discover it's temperature, that can be determined by the equation min1≤j≤k(tj+|aj−i|), where |aj−i| means outright worth of the distinction aj−i. As such, the temperature in cell I is equivalent to the base among the temperatures of forced air systems, expanded by the separation from it to the cell I. How about we take a gander at a model. Consider that n=6,k=2, the main forced air system is put in cell a1=2 and…
Given an input string (s) and a pattern (p), implement wildcard pattern matching with support for '?' and '*' where: '?' Matches any single character. '*' Matches any sequence of characters (including the empty sequence). The matching should cover the entire input string (not partial). Example 1: Input: s = "aa", p = "a" Output: false Explanation: "a" does not match the entire string "aa". Example 2: Input: s = "aa", p = "*" Output: true Explanation: '*' matches any sequence. Example 3: Input: s = "cb", p = "?a" Output: false Explanation: '?' matches 'c', but the second letter is 'a', which does not match 'b'. Constraints: 0 <= s.length, p.length <= 2000 s contains only lowercase English letters. p contains only lowercase English letters, '?' or '*'. In c# please
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Correct answer will be upvoted else Multiple Downvoted. Computer science. You are given an integer n (n>1). Your assignment is to find a succession of integers a1,a2,… ,ak with the end goal that: every simulated intelligence is completely more prominent than 1; a1⋅a2⋅… ⋅ak=n (I. e. the result of this grouping is n); ai+1 is separable by simulated intelligence for every I from 1 to k−1; k is the most extreme conceivable (I. e. the length of this grouping is the greatest conceivable). In case there are a few such groupings, any of them is adequate. It tends to be demonstrated that somewhere around one substantial grouping consistently exists for any integer n>1. You need to answer t autonomous experiments. Input The primary line of the input contains one integer t (1≤t≤5000) — the number of experiments. Then, at that point, t experiments follow. The main line of the experiment contains one integer n (2≤n≤1010). It is ensured that the amount of n…
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There are n people who want to carpool during m days. On day i, some subset ???? of people want to carpool, and the driver di must be selected from si . Each person j has a limited number of days fj they are willing to drive. Give an algorithm to find a driver assignment di ∈ si each day i such that no person j has to drive more than their limit fj. (The algorithm should output “no” if there is no such assignment.) Hint: Use network flow. For example, for the following input with n = 3 and m = 3, the algorithm could assign Tom to Day 1 and Day 2, and Mark to Day 3. Person Day 1 Day 2 Day 3 Driving Limit 1 (Tom) x x x 2 2 (Mark) x x 1 3 (Fred) x x 0