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Mcity > December 2022 > Flashcards

December 2022 Flashcards

1
Q

MMU (in traffic controller)

A

Malfunction Management Unit

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2
Q

Liu (pronounce)

A

Lay Oh

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3
Q

yiheng (pronounce)

A

Yee Hung

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4
Q

way to import modules in node.js

A

require(“module_name”)
Also import in more recent versions of node

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5
Q

module.exports()

A

defines the public interface that can be accessed should your code (module) be imported into another JS app.

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6
Q

Pattern for events framework in any UI (in node, or browser, etc.)

A

pub/sub

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7
Q

How to import just a portion of a module in node.js?

A

Destructure it.
const { piece-of-module} = require(“module_path”)

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8
Q

Important JS WebSocket library keywords (3)

A

ws = the main library
WebSocketServer
Socket.io

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9
Q

SPSD

A

Safety Pool Scenario Database

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10
Q

PEGASUS

A

A German research project. (The Acronym is Ridiculous.)
Project for the Establishment of Generally Accepted quality criteria, tools and methods as well as Scenarios and Situations.
goal: To develop a procedure for testing automated driving functions.

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11
Q

PEGASUS logical scenario (6 layers)

A

6 layers
6 - Data and Comm (V2X, etc.)
5 - Environment Conditions (rain, etc.)
4 - Movable Objects (vehicles)
3 - Temporal Modifications (cones, construction, etc.)
2 - Traffic Infrastructure
1 - Street (road geo., lanes and markings)

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12
Q

Ontology

A

A set of concepts and categories in a subject area or domain that shows their properties and the relations between them.

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13
Q

ALKS

A

Automated Lane Keeping Systems

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14
Q

SPSDL

A

Safety Pool Scenario Description Language

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15
Q

EOS (Econolite)

A

Econolite’s ATC (Advanced Traffic Controller) software. Presumably, EOS stands for Econolite Operating System.

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16
Q

ASC3 (Econolite)

A

Econolite term.
Advanced System Controller
3 is presumably the version.

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17
Q

DLI (Power Relays)

A

This is a company (DLI - Digital Loggers)

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18
Q

stunnel

A

stunnel is an open-source multi-platform application used to provide a universal TLS/SSL tunneling service.

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19
Q

standard 4 phase intersection

A

4 legs
unprotected lefts on all approaches

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20
Q

MUTCD

A

Manual on Uniform Traffic Control Devices
Manual as in Textbook

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21
Q

Standard 8 phase as a diagram (1-8)

A

__________2 5
___________________4
___________________7
3
8
1 6

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22
Q

Which one came first (Econolite) EOS or ASC3? Why do we use the new one?

A

ASC3 came first. We use EOS now because ASC3 did not support J2735

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23
Q

BeautifulSoup

A

Python library for parsing XML and HTML files

24
Q

PKCE

A

PKCE, pronounced “pixy” is an acronym for Proof Key for Code Exchange. (Extra dangles on the Oauth exchange)

25
Q

myQ

A

Smart Home Gadget Company

26
Q

V2X mini-architecture (Mcity)

A

Python Wrapper ( ASN library converter to C )
The ASN Library cannot be shipped/stored in our repo, so you have to pull it in manually in order to generate/build the converter

27
Q

SCOOT

A

Split Cycle and Offset Optimization Technique (work done by TRL)

28
Q

TRL

A

Transport Research Laboratory (Private company in UK)

29
Q

RTP

A

Real-time Transport Protocol
A network protocol for delivering audio and video over IP networks.
RTP typically runs over UDP and is used in conjunction with RTCP (RTP Control Protocol)

30
Q

RTCP

A

RTP Control Protocol
used to monitor transmission statistics and quality of service and aids synchronization of multiple streams

31
Q

2 types of multicast?

A

application layer multicast
whatever the app does
network-assisted multicast
efficiently send to group in one transaction

32
Q

WebRTC

A

WebRTC (Web Real-Time Communication) is a free and open-source project providing web browsers and mobile applications with real-time communication (RTC) via application programming interfaces (APIs).
WebRTC seems more 1:1

33
Q

AVC

A

Advanced Video Coding H.264 4k @32 mbps

34
Q

HVEC

A

High Efficiency Video Coding H.265 4k @ 15 mbps (higher HW requirements than H.264)

35
Q

rebasing (Git)

A

C0 <– C1 <–

36
Q

What are the members objects of the Vue context?

A

state, // same as store.state, or local state if in modules
rootState, // same as store.state, only in modules
commit, // same as store.commit
dispatch, // same as store.dispatch
getters, // same as store.getters, or local getters if in modules
rootGetters // same as store.getters, only in modules

37
Q

ML supervised/unsupervised

A

unsupervised = no correct answers
Instead of yes or no, we look at probabilities…

38
Q

ML one hot

A

Any group of bits that allow only one bit high. Any state with more than one high, is illegal.
one-hot is insufficient for unsupervised machine learning models.

39
Q

IR system

A

Information Retrieval System

40
Q

ML token

A

An instance of a sequence of characters in some particular document where the characters are grouped together as a useful semantic unit for processing.

41
Q

ML type

A

The class of all tokens containing the same character sequence. (example: a word used multiple times in a document)

42
Q

ML term

A

A (perhaps normalized) type that is included in the IR system’s dictionary.

43
Q

ML RNN & CNN & FNN

A

Recurrent Neural Network, Convolutional Neural Network
Connections loop back (feedback) allowing temporal dynamic behavior)
Feedback Neural Network

44
Q

Tensor

A

In mathematics, a tensor is an algebraic object that describes a multilinear relationship between sets of algebraic objects related to a vector space. Tensors may map between different objects such as vectors, scalars, and even other tensors. There are many types of tensors, including scalars and vectors (which are the simplest tensors), dual vectors, multilinear maps between vector spaces, and even some operations such as the dot product.

45
Q

Markov Chain

A

A stochastic model describing a sequence of possible events in which the probability of each event depends only on the state attained in the previous event.

46
Q

ML Beam Search

A

Given immense training, the model has a probability map (tree) of words following other words (a Markov Chain) A beam search considers all possibilities and the most likely one wins. Beams are the different branches.

47
Q

ML Repetition

A

The amount of time an ngram appears in the result of NLP

48
Q

ML Sampling

A

Refers to the process of choosing the next word. It is done randomly according to the probabilities remembered.

49
Q

ML Perplexity

A

Simply weird output due to the eventuality of low-probability choices when sampling. Has an inverse relationship to the followin: path-through-tree-probability Calculated over a sample-size of tokens. (What is the probability of that phrase given the prob-tree from learning?)

50
Q

ML Temperature

A

When T = 0, the result is greedy (always choose the most-likely next step)
When T = 1, the result is pure sampling.

51
Q

Long-Right Tail Problem

A

A phenomena in stochastic systems where a distribution is dominated by a heavy-left presence, but the right presence goes way way out. When randomly sampling from these, occasionally you’ll get something way out to the right.

52
Q

Top-K and Top-P

A

Top-K
is a means to deal with the long-right tail. We will only take from the Top-K values (i.e. the K most-left values in the distribution).

Top-P
Same as Top-K but the metric used is probability rather than number of terms.

53
Q

ngram

A

a group of n tokens/words/terms

54
Q

NLP

A

Natural Language Processing

55
Q

public vs. private subnet

A

The instances in the public subnet can send outbound traffic directly to the internet, whereas the instances in the private subnet can’t. Instead, the instances in the private subnet can access the internet by using a network address translation (NAT) gateway that resides in the public subnet.

56
Q

Contact for AWS usage

A

Patrick

Mcity (14 decks)

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