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Naïve filterbots for robust cold-start recommendations

by Seung-taek Park, David Pennock, Omid Madani, Nathan Good, Dennis Decoste - Proc. of the 12th ACM SIGKDD Int’l Conf , 2006
"... The goal of a recommender system is to suggest items of interest to a user based on historical behavior of a community of users. Given detailed enough history, item-based collaborative filtering (CF) often performs as well or better than almost any other recommendation method. However, in cold-start ..."
Abstract - Cited by 30 (3 self) - Add to MetaCart
situations—where a user, an item, or the entire system is new—simple non-personalized recommendations often fare better. We improve the scalability and performance of a previous approach to handling cold-start situations that uses filterbots, or surrogate users that rate items based only on user or item

Cold-start Active Learning with Robust Ordinal Matrix Factorization

by Neil Houlsby, Jose ́ Miguel Hernández-lobato, Zoubin Ghahramani
"... We present a new matrix factorization model for rating data and a corresponding active learning strategy to address the cold-start problem. Cold-start is one of the most challenging tasks for rec-ommender systems: what to recommend with new users or items for which one has little or no data. An appr ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
We present a new matrix factorization model for rating data and a corresponding active learning strategy to address the cold-start problem. Cold-start is one of the most challenging tasks for rec-ommender systems: what to recommend with new users or items for which one has little or no data

Ensemble Contextual Bandits for Personalized Recommendation

by Liang Tang, Yexi Jiang, Lei Li, Tao Li
"... The cold-start problem has attracted extensive attention among various online services that provide personalized rec-ommendation. Many online vendors employ contextual ban-dit strategies to tackle the so-called exploration/exploitation dilemma rooted from the cold-start problem. However, due to high ..."
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The cold-start problem has attracted extensive attention among various online services that provide personalized rec-ommendation. Many online vendors employ contextual ban-dit strategies to tackle the so-called exploration/exploitation dilemma rooted from the cold-start problem. However, due

Personalized Recommendation via Parameter-Free Contextual Bandits

by Liang Tang, Yexi Jiang, Lei Li, Chunqiu Zeng, Tao Li
"... Personalized recommendation services have gained increas-ing popularity and attention in recent years as most useful information can be accessed online in real-time. Most on-line recommender systems try to address the information needs of users by virtue of both user and content informa-tion. Despit ..."
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. Despite extensive recent advances, the problem of per-sonalized recommendation remains challenging for at least two reasons. First, the user and item repositories undergo frequent changes, which makes traditional recommendation algorithms ineffective. Second, the so-called cold-start prob-lem is difficult

Cross Domain Recommendation Using Vector Space Transfer Learning

by Masahiro Kazama , István Varga
"... ABSTRACT The cold start problem, frequent with recommender systems, addresses the issue in cases where we don't know enough about our users (e.g., the user hasn't rated anything yet, or there are no user activities) in that specific domain. In our paper we present a simple and robust tran ..."
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ABSTRACT The cold start problem, frequent with recommender systems, addresses the issue in cases where we don't know enough about our users (e.g., the user hasn't rated anything yet, or there are no user activities) in that specific domain. In our paper we present a simple and robust

Selective enrichment of sialic acid-containing glycopeptides using titanium dioxide chromatography with analysis by HILIC and mass spectrometry. Nat Protoc 5

by Giuseppe Palmisano , Sara Eun Lendal , Kasper Engholm-Keller , Rikke Leth-Larsen , Benjamin L Parker , Martin R Larsen , Giuseppe Palmisano , 2010
"... the terminal monosaccharide of cell surface glycoconjugates is typically a sialic acid (sa), and aberrant sialylation is involved in several diseases. several methodological approaches in sample preparation and subsequent analysis using mass spectrometry (Ms) have enabled the identification of glyc ..."
Abstract - Cited by 7 (0 self) - Add to MetaCart
Sciences), Proteome Discoverer 1.2 (Thermo Scientific) or equivalent) REAGENT SETUP HeLa cells HeLa cells (human cervix epithelial adenocarcinoma cells) were grown in DMEM; ~10 7 cells were used as starting material per sample. Lysis buffer Lysis buffer is composed of Na 2 CO 3 (100 mM) and protease

AND MATHEMATICAL ENGINEERING

by Madeleine Udell, Professor Lester Mackey , 2015
"... ii ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
Abstract not found

i A TRANSIENT COMPUTATIONAL FLUID DYNAMIC STUDY OF A LABORATORY-SCALE FLUORINE

by Ryno Pretorius, Supervisor Prof, P. L. Crouse, Electrolysis Cell
"... Fluorine gas is produced industrially by electrolysing hydrogen fluoride in a potassium acid fluoride electrolyte. Fluorine is produced at the carbon anode, while hydrogen is produced at the mild-steel cathode. The fluorine produced has a wide range of uses, most notably in the nuclear industry wher ..."
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Fluorine gas is produced industrially by electrolysing hydrogen fluoride in a potassium acid fluoride electrolyte. Fluorine is produced at the carbon anode, while hydrogen is produced at the mild-steel cathode. The fluorine produced has a wide range of uses, most notably in the nuclear industry where it is used to separate 235U and 238U. The South African Nuclear Energy Corporation (Necsa) is a producer of fluorine and requested an investigation into the hydrodynamics of their electrolysis cells as part of a larger national initiative to beneficiate more of South Africa’s large fluorspar deposits. Due to the extremely corrosive and toxic environment inside a typical fluorine electrolysis reactor, the fluid dynamics in the reactor are not understood well enough. The harsh conditions make detailed experimental investigation of the reactors extremely dangerous. The objective of this project is to construct a model that can accurately predict the physical processes involved in the production of fluorine gas. The results of the simulation will be compared to experimental results from tests done on a lab-scale reactor. A good correlation

AGR 05

by Università Degli, Studi Della Tuscia, Dottorato Di Ricerca, Candidato Tutori, Alessandra Lagomarsino, Prof Paolo, De Angelis, Prof Stefano Grego, Prof Paolo, De Angelis
"... Responses of soil biological processes to elevated atmospheric [CO2] and nitrogen addition in a poplar plantation ..."
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Responses of soil biological processes to elevated atmospheric [CO2] and nitrogen addition in a poplar plantation

Copper transporter 2 regulates the cellular accumulation and cytotoxicity of Cisplatin and

by Brian G Blair , Christophera Larson , Roohangiz Safaei , Stephen B Howell , Cancertherapy : Preclinical , Stephen B Howell , 2009
"... Abstract Purpose: Copper transporter 2 (CTR2) is known to mediate the uptake of Cu +1 by mammalian cells. Several other Cu transporters, including the influx transporter CTR1 and the two efflux transporters ATP7A and ATP7B, also regulate sensitivity to the platinum-containing drugs. We sought to de ..."
Abstract - Cited by 5 (2 self) - Add to MetaCart
and CTR2 expression in a panel of six ovarian cancer cell lines. Materials and Methods Drugs and reagents. Platinol AQ was a gift from Bristol-Myers Squibb; it contains DDP at a concentration of 3.33 mmol/L in 0.9% NaCl. [ 14 C]CBDCA was purchased from Amersham Biosciences. The drugs were diluted
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