105 research outputs found
DeepFM: A Factorization-Machine based Neural Network for CTR Prediction
Learning sophisticated feature interactions behind user behaviors is critical
in maximizing CTR for recommender systems. Despite great progress, existing
methods seem to have a strong bias towards low- or high-order interactions, or
require expertise feature engineering. In this paper, we show that it is
possible to derive an end-to-end learning model that emphasizes both low- and
high-order feature interactions. The proposed model, DeepFM, combines the power
of factorization machines for recommendation and deep learning for feature
learning in a new neural network architecture. Compared to the latest Wide \&
Deep model from Google, DeepFM has a shared input to its "wide" and "deep"
parts, with no need of feature engineering besides raw features. Comprehensive
experiments are conducted to demonstrate the effectiveness and efficiency of
DeepFM over the existing models for CTR prediction, on both benchmark data and
commercial data
Feature Generation by Convolutional Neural Network for Click-Through Rate Prediction
Click-Through Rate prediction is an important task in recommender systems,
which aims to estimate the probability of a user to click on a given item.
Recently, many deep models have been proposed to learn low-order and high-order
feature interactions from original features. However, since useful interactions
are always sparse, it is difficult for DNN to learn them effectively under a
large number of parameters. In real scenarios, artificial features are able to
improve the performance of deep models (such as Wide & Deep Learning), but
feature engineering is expensive and requires domain knowledge, making it
impractical in different scenarios. Therefore, it is necessary to augment
feature space automatically. In this paper, We propose a novel Feature
Generation by Convolutional Neural Network (FGCNN) model with two components:
Feature Generation and Deep Classifier. Feature Generation leverages the
strength of CNN to generate local patterns and recombine them to generate new
features. Deep Classifier adopts the structure of IPNN to learn interactions
from the augmented feature space. Experimental results on three large-scale
datasets show that FGCNN significantly outperforms nine state-of-the-art
models. Moreover, when applying some state-of-the-art models as Deep
Classifier, better performance is always achieved, showing the great
compatibility of our FGCNN model. This work explores a novel direction for CTR
predictions: it is quite useful to reduce the learning difficulties of DNN by
automatically identifying important features
Corpus of public writing and its interest for the history of spanish: votive paintings of the province of Guadalajara
El objetivo del presente trabajo es dar a conocer un especial corpus de escrituras expuestas populares ubicadas en los centros de devoción de la provincia de Guadalajara; en concreto un corpus de exvotos pintados datados entre los siglos XVII al XX. Los cuadros representan el suceso que dio origen al milagro o favor recibido con su cartela; pero en nuestro corpus solo se recogen aquellos exvotos que van acompañados de texto explicativo, en el que se da testimonio del favor recibido con datos precisos, como nombre, causa, fecha, lugar, etc. En el corpus que presentamos se incluye la reproducción del exvoto, la transcripción paleográfica del documento y su presentación crítica. El estudio detenido de estos tres elementos permitirá extraer interesantes conclusiones para la historia del español en aspectos relacionados con las grafías, la ortografía, la puntuación, las estructuras sintácticas y fórmulas empleadas, el léxico, etc.; se recogen en este artículo algunas muestras de ello.El objetivo del presente trabajo es dar a conocer un especial corpus de escrituras expuestas populares ubicadas en los centros de devoción de la provincia de Guadalajara; en concreto un corpus de exvotos pintados datados entre los siglos XVII al XX. Los cuadros representan el suceso que dio origen al milagro o favor recibido con su cartela; pero en nuestro corpus solo se recogen aquellos exvotos que van acompañados de texto explicativo, en el que se da testimonio del favor recibido con datos precisos, como nombre, causa, fecha, lugar, etc. En el corpus que presentamos se incluye la reproducción del exvoto, la transcripción paleográfica del documento y su presentación crítica. El estudio detenido de estos tres elementos permitirá extraer interesantes conclusiones para la historia del español en aspectos relacionados con las grafías, la ortografía, la puntuación, las estructuras sintácticas y fórmulas empleadas, el léxico, etc.; se recogen en este artículo algunas muestras de ello.El objetivo del presente trabajo es dar a conocer un especial corpus de escrituras expuestas populares ubicadas en los centros de devoción de la provincia de Guadalajara; en concreto un corpus de exvotos pintados datados entre los siglos XVII al XX. Los cuadros representan el suceso que dio origen al milagro o favor recibido con su cartela; pero en nuestro corpus solo se recogen aquellos exvotos que van acompañados de texto explicativo, en el que se da testimonio del favor recibido con datos precisos, como nombre, causa, fecha, lugar, etc. En el corpus que presentamos se incluye la reproducción del exvoto, la transcripción paleográfica del documento y su presentación crítica. El estudio detenido de estos tres elementos permitirá extraer interesantes conclusiones para la historia del español en aspectos relacionados con las grafías, la ortografía, la puntuación, las estructuras sintácticas y fórmulas empleadas, el léxico, etc.; se recogen en este artículo algunas muestras de ello.The objective of this work is to present a special corpus of popular public writing in the centres of devotion of the province of Guadalajara; in particular a corpus of painted votive offering dating from the 17th to the 20th centuries. The pictures represent the event that gave rise to the miracle or favour received with his card; but in our corpus are only included those votive offerings that are accompanied by explanatory text, which testifies to the favour received with precise information, as name, cause, date, place, etc.The Corpus includes the reproduction of the votive offering, the paleographic transcription of the document and its critical presentation. The careful study of these three elements will allow us to extract interesting conclusions for the history of Spanish in aspects related to spelling, punctuation, syntactic structures and formulas used, lexicon, etc.; some samples that are collected in this article
PDNPulse: Sensing PCB Anomaly with the Intrinsic Power Delivery Network
The ubiquitous presence of printed circuit boards (PCBs) in modern electronic
systems and embedded devices makes their integrity a top security concern. To
take advantage of the economies of scale, today's PCB design and manufacturing
are often performed by suppliers around the globe, exposing them to many
security vulnerabilities along the segmented PCB supply chain. Moreover, the
increasing complexity of the PCB designs also leaves ample room for numerous
sneaky board-level attacks to be implemented throughout each stage of a PCB's
lifetime, threatening many electronic devices. In this paper, we propose
PDNPulse, a power delivery network (PDN) based PCB anomaly detection framework
that can identify a wide spectrum of board-level malicious modifications.
PDNPulse leverages the fact that the PDN's characteristics are inevitably
affected by modifications to the PCB, no matter how minuscule. By detecting
changes to the PDN impedance profile and using the Frechet distance-based
anomaly detection algorithms, PDNPulse can robustly and successfully discern
malicious modifications across the system. Using PDNPulse, we conduct extensive
experiments on seven commercial-off-the-shelf PCBs, covering different design
scales, different threat models, and seven different anomaly types. The results
confirm that PDNPulse creates an effective security asymmetry between attack
and defense
Automated Machine Learning for Deep Recommender Systems: A Survey
Deep recommender systems (DRS) are critical for current commercial online
service providers, which address the issue of information overload by
recommending items that are tailored to the user's interests and preferences.
They have unprecedented feature representations effectiveness and the capacity
of modeling the non-linear relationships between users and items. Despite their
advancements, DRS models, like other deep learning models, employ sophisticated
neural network architectures and other vital components that are typically
designed and tuned by human experts. This article will give a comprehensive
summary of automated machine learning (AutoML) for developing DRS models. We
first provide an overview of AutoML for DRS models and the related techniques.
Then we discuss the state-of-the-art AutoML approaches that automate the
feature selection, feature embeddings, feature interactions, and system design
in DRS. Finally, we discuss appealing research directions and summarize the
survey
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