Results 31 to 40 of about 13,923,371 (387)

Optimizing the Frequency Capping: A Robust and Reliable Methodology to Define the Number of Ads to Maximize ROAS

open access: yesApplied Sciences, 2021
The goal of digital marketing is to connect advertisers with users that are interested in their products. This means serving ads to users, and it could lead to a user receiving hundreds of impressions of the same ad.
Jesús Romero Leguina   +2 more
doaj   +1 more source

The value of hippocampal and temporal horn volumes and rates of change in predicting future conversion to AD. [PDF]

open access: yes, 2012
Hippocampal pathology occurs early in Alzheimer disease (AD), and atrophy, measured by volumes and volume changes, may predict which subjects will develop AD.
ADNI investigators   +5 more
core   +1 more source

Influence of Mn pellet preparation conditions on nitriding reaction

open access: yes工程科学学报, 2016
Nitriding reaction of Mn pellets prepared under different conditions was investigated with a self-made air-proofed nitriding system. The effects of Mn particle size, pelletizing pressure and binder content on the nitriding reaction were studied, and the ...
ZHU Xiang-ying, ZHAI Yu-chun
doaj   +1 more source

Large-scale Causal Approaches to Debiasing Post-click Conversion Rate Estimation with Multi-task Learning [PDF]

open access: yesThe Web Conference, 2019
Post-click conversion rate (CVR) estimation is a critical task in e-commerce recommender systems. This task is deemed quite challenging under industrial setting with two major issues: 1) selection bias caused by user self-selection, and 2) data sparsity ...
Wenhao Zhang   +6 more
semanticscholar   +1 more source

An Attention-based Model for Conversion Rate Prediction with Delayed Feedback via Post-click Calibration

open access: yesInternational Joint Conference on Artificial Intelligence, 2020
Conversion rate (CVR) prediction is becoming increasingly important in the multi-billion dollar online display advertising industry. It has two major challenges: firstly, the scarce user history data is very complicated and non-linear; secondly, the time
Yumin Su   +9 more
semanticscholar   +1 more source

Wavelength conversion up to 18 nm at 10 Gb/s by four-wave mixing in a semiconductor optical amplifier [PDF]

open access: yes, 1997
We characterize the conversion bandwidth of a four-wave mixing semiconductor optical amplifier wavelength converter. Conversion of 10-Gb/s signals with bit-error-rate (BER) performance of
Geraghty, David F.   +5 more
core   +1 more source

Effect of Metal Oxides and Smelting Dust on SO2 Conversion to SO3

open access: yesAtmosphere, 2021
The purpose of this study was to investigate the effects of metal oxides and smelting dust on the formation of sulfur trioxide during copper, lead, zinc smelting process and flue.
Haipeng Liu   +5 more
doaj   +1 more source

Wavelength conversion for WDM communication systems using four-wavemixing in semiconductor optical amplifiers [PDF]

open access: yes, 1997
Four-wave mixing (FWM) in semiconductor optical amplifiers is an attractive mechanism for wavelength conversion in wavelength-division multiplexed (WDM) systems since it provides modulation format and bit rate transparency over wide tuning ranges.
Geraghty, David F.   +5 more
core   +1 more source

CO2 Methanation of Biogas over 20 wt% Ni-Mg-Al Catalyst: on the Effect of N2, CH4, and O2 on CO2 Conversion Rate

open access: yesCatalysts, 2020
Biogas contains more than 40% CO2 that can be removed to produce high quality CH4. Recently, CH4 production from CO2 methanation has been reported in several studies. In this study, CO2 methanation of biogas was performed over a 20 wt% Ni-Mg-Al catalyst,
Danbee Han   +4 more
semanticscholar   +1 more source

Multi-Level Deep Cascade Trees for Conversion Rate Prediction in Recommendation System [PDF]

open access: yesAAAI Conference on Artificial Intelligence, 2018
Developing effective and efficient recommendation methods is very challenging for modern e-commerce platforms. Generally speaking, two essential modules named “ClickThrough Rate Prediction” (CTR) and “Conversion Rate Prediction” (CVR) are included, where
Hong Wen   +8 more
semanticscholar   +1 more source

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