Random Forest Classifier Flat Data Structure for Embedded Systems
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Solution Overview
Problem
Traditional random forest classifiers require significant processing resources, memory, and throughput, making them impractical for implementation in limited resource systems such as embedded software, health monitoring systems, and edge devices.
Innovation Solution
A data structure is used to implement a random forest classifier by converting decision trees into a pseudo regression model and translating the random forest into a flat format, allowing for a complex forest algorithm to be executed in resource-limited systems with reduced resource requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional random forest classifiers with decision trees and if-else statements are implemented, then classification accuracy is maintained, but processing resources and memory requirements increase significantly
Solution Approach 1:
The patent segments the random forest classifier into multiple independent decision trees, each handling a portion of the classification task. This segmentation allows the system to process data in smaller, more manageable units, reducing the memory footprint and processing overhead while maintaining overall classification accuracy through the collective decision-making of multiple trees.
Solution Approach 2:
The patent transforms the traditional if-else statement structure into a parametric evaluation model where decision rules are represented as mathematical functions with adjustable parameters. This parameterization enables more efficient computation by replacing complex conditional logic with streamlined mathematical operations, reducing processing resources while preserving classification performance.
2Adaptability or versatility
If traditional random forest classifiers are implemented in embedded systems, then comprehensive classification capabilities are achieved, but the system becomes impractical due to resource constraints
Solution Approach 1:
The patent implements a simplified version of the random forest algorithm that uses a reduced number of decision trees and simplified evaluation rules compared to the traditional implementation. This partial action approach provides sufficient classification capability for embedded applications while dramatically reducing memory and processing requirements, making the system practical for resource-constrained environments.
Solution Approach 2:
The patent employs lightweight data structures and temporary variables that are created and discarded during the classification process, rather than maintaining complex persistent structures. This approach minimizes memory allocation and deallocation overhead, enabling the classifier to operate efficiently within the limited memory constraints of embedded systems.
3Measurement precision
If decision trees with multiple if-else statements are used, then accurate classification decisions are made, but throughput and processing speed decrease
Solution Approach 1:
The patent replaces the mechanical if-else statement evaluation mechanism with a parametric mathematical evaluation system. Instead of sequentially checking multiple conditional statements, the system uses mathematical functions to evaluate decision rules, which can be computed more efficiently and in parallel, thereby increasing throughput while maintaining classification accuracy.
Solution Approach 2:
The patent pre-computes and stores decision thresholds and parameter values during the training phase, so that during classification, the system only needs to perform simple parameter comparisons and mathematical evaluations rather than complex logical reasoning. This preliminary preparation significantly speeds up the classification process while preserving accuracy.
Data Source
AI summary
Methods, apparatus, systems, and articles of manufacture to implement a random forest are disclosed. An example apparatus includes logic circuitry to, for a first cycle, identify a feature value corresponding to an initial node identifier of a data structure, the feature value including in an input feature array. The apparatus further includes a comparator to compare the feature value to a threshold corresponding to the initial node identifier. The apparatus further includes a register to store an updated node identifier, the updated node identifier being (a) a first updated node identifier when the feature value exceeds the threshold or (b) a second updated node identifier when the feature value is below the threshold, the logic circuitry to use the updated node identifier for a second cycle.


