import Classifier from '@cansat-icarus/capture-lib/src/icarus/classifier/index.js'

public class | source

Classifier

Extends:

events~EventEmitter → Classifier

Calculates packet and station scores. Not an AI classifier. Packet scores are calculated based on the CRC checksum(60%) and simple heuristics(min/max value, variation between packets)(40%). The heuristics used are configured in the packet-heuristics.js map. Station scores are calculated based on the average packet score. The weight of each packet score is determined by the racional function 1/2x where x is a positive non-zero integer that represents how recent the packet is (1 being the most recent packet).

Constructor Summary

Public Constructor
public	constructor(logger: Bunyan) Constructor.

Member Summary

Public Members
public	stationScore: Number The station score.

Private Members
private	_lastData: Object The last data received (all packets merge in here).
private	_log: Bunyan Logger instance.

Method Summary

Public Methods
public	classifyPacket(packet: Object, updateStationClassification: Boolean): Number Classifies one packet and updates the station score (unless told otherwise).
public	classifyStationInc(packetScore: Number): Number Updates the station score(incrementally).

Public Constructors

public constructor(logger: Bunyan) source

Constructor.

Params:

Name	Type	Attribute	Description
logger	Bunyan		Logger instance.

Public Members

public stationScore: Number source

The station score.

Private Members

private _lastData: Object source

The last data received (all packets merge in here). Used for heuristic algorithms.

private _log: Bunyan source

Logger instance.

Public Methods

public classifyPacket(packet: Object, updateStationClassification: Boolean): Number source

Classifies one packet and updates the station score (unless told otherwise). Packet scores are calculated based on the CRC checksum(60%) and simple heuristics(min/max value, variation between packets)(40%).

Params:

Name	Type	Attribute	Description
packet	Object		The packet to classify.
updateStationClassification	Boolean	optional default: true	Whether to update the station score.

Return:

Number

Packet score.

Emit:

*	stationScore(stationScore): when updateStationClassification is true, the station score is updated and the event is fired.

public classifyStationInc(packetScore: Number): Number source

Updates the station score(incrementally). Station scores are calculated based on the average packet score. The weight of each packet score is determined by the racional function 1/2x where x is a positive non-zero integer that represents how recent the packet is (1 being the most recent packet).

Params:

Name	Type	Attribute	Description
packetScore	Number		The score of the previously unnacounted packet.

Return:

Number

New station score.

Emit:

*	stationScore(stationScore): because the station score was updated.