【摘要】：交通情境識別又稱為交通模式識別,是利用用戶的上下文信息對用戶所處的交通狀態(tài)的一種識別和感知,是人類行為識別的子問題。交通模式的自動識別可以替代傳統(tǒng)的居民出行調(diào)查方式,更加便捷的獲取大量居民的出行方式信息數(shù)據(jù)。用于城市的交通規(guī)劃,緩解城市交通壓力以及提高人們的出行效率。本文探究使用深度學(xué)習(xí)的方法對手機(jī)傳感器進(jìn)行建模完成交通情境識別。本文首先研究了傳統(tǒng)的基于手機(jī)傳感器的交通模式識別方法,包括使用的手機(jī)傳感器類型、數(shù)據(jù)流處理過程、以及傳統(tǒng)的分類方法的性能。本文研究的交通模式分類包括:公交、地鐵、出租、高鐵。根據(jù)研究需求采集并且構(gòu)建了相關(guān)交通模式識別的基準(zhǔn)數(shù)據(jù)集。共進(jìn)行255次采集包含15名采集人員,采集6種不同部位,總共7861分鐘的數(shù)據(jù)。在基準(zhǔn)測試數(shù)據(jù)集上,本文提出兩種交通模式識別方案:一、基于多層的RNN交通模式識別方案。方案對傳感器進(jìn)行預(yù)處理后提取簡單的統(tǒng)計特征作為RNN網(wǎng)絡(luò)的輸入,使用多層或單層的lstm網(wǎng)絡(luò)提取時序特征用于交通模式識別,最終識別準(zhǔn)確率可以達(dá)到89%;二、結(jié)合CNN和RNN的交通模式識別方案,本方案通過將傳感器數(shù)據(jù)特征圖像化,生成activity image利用CNN自動的提取特征并利用RNN網(wǎng)絡(luò)學(xué)習(xí)特征圖像的時序特征。最終識別準(zhǔn)確率可以到達(dá)78%。
[Abstract]:Traffic situation recognition, also known as traffic pattern recognition, is a kind of recognition and perception of the user's traffic state using the user's context information. It is a sub-problem of human behavior recognition. The automatic identification of traffic patterns can replace the traditional residents' travel survey and obtain a large number of residents' travel mode information data more conveniently. It is used in urban traffic planning, relieving traffic pressure and improving people's travel efficiency. This paper explores the use of depth learning to model mobile phone sensors to complete traffic situation recognition. Firstly, this paper studies the traditional traffic pattern recognition methods based on mobile phone sensors, including the types of mobile phone sensors used, the process of data flow processing, and the performance of the traditional classification methods. This paper studies the classification of traffic patterns including: public transport, subway, taxi, high-speed rail. According to the needs of the research, the benchmark data set of traffic pattern recognition is constructed. A total of 7861 minutes of data were collected from 6 different parts. Based on the benchmark data set, this paper proposes two traffic pattern recognition schemes: first, RNN traffic pattern recognition scheme based on multi-layer. After preprocessing the sensor, the scheme extracts simple statistical features as input of RNN network, and uses multi-layer or single-layer lstm network to extract time series features for traffic pattern recognition. Finally, the recognition accuracy can reach 89 parts. Combined with the traffic pattern recognition scheme of CNN and RNN, this scheme uses the sensor data feature image to generate activity image automatically extract features using CNN and use RNN network to learn the temporal features of feature images. The final recognition accuracy can reach 78.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U495;TP391.4

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本文編號：2199513