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Convex Aggregation for Opinion Summarization

Hayate Iso
2022 Journal of Natural Language Processing  
自然言語処理 Vol. 29 No. 1 March 2022 な要約ベクトル z を探索するように定式化する: maximize 磯 Convex Aggregation for Opinion Summarization z Overlap(R e , G(z)) 図 1 潜在空間 Z とテキスト空間 X の図示.各エンティティの単純平均による要約ベクトル zavg は,い ずれも空間の中心付近  ...  "Unsupervised Opinion Summarization as Copycat-Review Generation." In Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics, pp. 5151-5169, Online.  ... 
doi:10.5715/jnlp.29.264 fatcat:n56xqxbrfbhhvbfq5enr4tp26e

Convex Aggregation for Opinion Summarization [article]

Hayate Iso, Xiaolan Wang, Yoshihiko Suhara, Stefanos Angelidis, Wang-Chiew Tan
2021 arXiv   pre-print
As a successful application of this property, unsupervised opinion summarization models generate a summary by decoding the aggregated latent vectors of inputs.  ...  To overcome this issue, we develop a framework Coop, which searches input combinations for the latent vector aggregation using input-output word overlap.  ...  COOP: Convex Aggregation for Opinion Summarization We develop a latent vector aggregation framework COOP to solve the convex aggregation problem in Figure 4 .  ... 
arXiv:2104.01371v3 fatcat:ahnlwmwxprbtno5khr32ur7fo4

Convex Aggregation for Opinion Summarization

Hayate Iso, Xiaolan Wang, Yoshihiko Suhara, Stefanos Angelidis, Wang-Chiew Tan
2021 Findings of the Association for Computational Linguistics: EMNLP 2021   unpublished
As a successful application of this property, unsupervised opinion summarization models generate a summary by decoding the aggregated latent vectors of inputs.  ...  To overcome this issue, we develop a framework COOP, which searches input combinations for the latent vector aggregation using input-output word overlap.  ...  COOP: Convex Aggregation for Opinion Summarization We develop a latent vector aggregation framework COOP to solve the convex aggregation problem in Figure 4 .  ... 
doi:10.18653/v1/2021.findings-emnlp.328 fatcat:owoukwaayneupa7fhrqudwc47y

Aggregation of fuzzy opinions under group decision making

Hsi-Mei Hsu, Chen-Tung Chen
1996 Fuzzy sets and systems (Print)  
In this paper, a method is proposed for aggregating individual fuzzy opinions into a group fuzzy consensus opinion. This paper presents a procedure for aggregating the expert opinions.  ...  Then, we aggregate the experts using the index of consensus and the importance of each expert. Finally, a numerical example is given to apply our model.  ...  For above example, with no preference assumption, the minimal fuzzy extension and convex fuzzy extension lead here to the same aggregation result/~' = (1, 2, 4, 6) .  ... 
doi:10.1016/0165-0114(95)00185-9 fatcat:shncm5r6xbcrrfggpibsfvlndy

Topological aggregation of inequality preorders

M. Le Breton, A. Trannoy, J. R. Uriarte
1985 Social Choice and Welfare  
Laine for helpful discussions and to an anonymous referee of this Journal for valuable comments ** To whom offprint requests should be sent  ...  The paper shows that it is possible to aggregate individual inequality preorders into a collective one if we are interested in continuous anonymous aggregation rules that respect unanimity.  ...  Let us remark that, since we are dealing with judgement aggregation rather than interest aggregation, the informational basis for collective choice is obtained by ordinally measuring the individual opinions  ... 
doi:10.1007/bf00437312 fatcat:wahvvgl75bejbkuo75fmzc2uhi

Fuzzy Delphi Technique for Forecasting and Screening Items

Arash Habibi, Farzad Firouzi Jahantigh, Azam Sarafrazi
2015 Asian Journal of Research in Business Economics and Management  
Delphi technique is a group knowledge acquisition method that has been used for over half a century. Delphi technique calculations are based on experts' opinions.  ...  In traditional Delphi approaches, although experts' mental competencies and abilities are used for comparisons, the quantification of experts' opinions cannot completely reflect the human thinking style  ...  are also used for the aggregation of experts' opinions.  ... 
doi:10.5958/2249-7307.2015.00036.5 fatcat:3uhv7stp7fewxanswihrmhri3u

Beyond CES: Three Alternative Classes of Flexible Homothetic Demand Systems

Kiminori Matsuyama, Philip Ushchev
2017 Social Science Research Network  
In HSA, all the cross-price effects are captured by one price aggregator, while in HDIA and in HIIA, they are captured by two price aggregators.  ...  We characterize three classes of demand systems, all of which are defined non-parametrically: homothetic demand systems with a single aggregator (HSA), those with direct implicit additivity (HDIA), and  ...  strictly convex for > 1 (the case of gross substitutes).  ... 
doi:10.2139/ssrn.3015279 fatcat:pfbozo2oajactftn5dmmnjv4ay

The Distribution of Revealed Preferences Under Social Pressure

Moti Michaeli, Daniel Spiro
2012 Social Science Research Network  
This paper studies theoretically the aggregate distribution of revealed preferences when heterogeneous individuals make the trade o¤ between being true to their real opinions and conforming to a social  ...  We also show that societies with orthodox individuals will be liberal on aggregate unless the social norm is upheld by an authority. This suggests that orthodoxy cannot be maintained under pluralism.  ...  But that the aggregated pressure function is convex may be less obvious, given that we have not even speci…ed whether the pressure stemming from each person is convex or concave.  ... 
doi:10.2139/ssrn.2061537 fatcat:sznwjjayejdddorwsprpowmvga

A penalty-based aggregation operator for non-convex intervals

Gleb Beliakov, Simon James
2014 Knowledge-Based Systems  
Although this is consistent with the aggregation of convex interval inputs, in the non-convex case such operators are not idempotent and may result in outputs which do not faithfully summarize or represent  ...  The aggregation of non-convex or discontinuous intervals is usually approached in line with the extension principle, i.e. by aggregating all real-valued input vectors lying within the interval boundaries  ...  For example, AM U may not be useful for providing a representative value from expert opinions because it is not idempotent.  ... 
doi:10.1016/j.knosys.2014.07.011 fatcat:xqv7o6jy3bcwvcv57c5wppyf5u

Page 389 of Mathematical Reviews Vol. , Issue 82a [page]

1982 Mathematical Reviews  
must examine an incomplete list of objects presented for his expert opinion.  ...  For any set Z, the maximum-convex hull of Z, max- conv Z, is the least maximum-convex set containing Z.  ... 

Local Aggregation in Preference Games [article]

Angelo Fanelli, Dimitris Fotakis
2020 arXiv   pre-print
as the output of an aggregation function.  ...  Furthermore, departing from the previous literature, we assume that, due to the lack of information, each agent locally represents the trend of the network through an aggregate value, which can be interpreted  ...  But in our model, the environment is summarized by the aggregate strategy of her social neighbors.  ... 
arXiv:2002.01251v1 fatcat:orzrqpwewbfl5deinbbuf4xv64

A new model for linguistic summarization of heterogeneous data: an application to tourism web data sources

Ramón A. Carrasco, Pedro Villar
2011 Soft Computing - A Fusion of Foundations, Methodologies and Applications  
In this paper we present the problem of aggregating heterogeneous data from various websites with opinions about high end hotels into a database.  ...  We present the fuzzy model based on the semantic translation as a tool to obtain a linguistic summarization.  ...  This new summarization model is used as aggregate phase in the opinion aggregation architecture specified in Fig. 1 .  ... 
doi:10.1007/s00500-011-0740-1 fatcat:gzi2ujcvl5gplbdgdhsn5ggpry

TODIM under Group Decision Making based on Weighted Selective Aggregated Majority-OWA Operator
English

Nur Najwa Nadhirah Che Rosli, Binyamin Yusoff, Che Mohd Imran Che Taib, Elissa Nadia Madi
2020 International Journal of Engineering Trends and Technoloy  
TODIM (an acronym in Portuguese for Interactive Multiple Criteria Decision Making) is one of the discrete MCDM methods whose fundamental feature is to compare alternatives with respect to each criterion  ...  However, the collective decision in the existing method is merely based on the aggregation of experts with the main emphasis on full consensus measure.  ...  Based on these values, the aggregated value that represent the majority opinion of experts, or for alternative and criteria can be determined and the detailed computation is shown in Table 4 .  ... 
doi:10.14445/22315381/cati2p222 fatcat:expvsycnmvalrjnlny73rvbk4i

The aggregation of imprecise probabilities

Robert F. Nau
2002 Journal of Statistical Planning and Inference  
Two methods are presented for the aggregation of imprecise probabilities elicited from a group of experts in terms of betting rates.  ...  In the ÿrst method, the experts bet with a common opponent subject to limits on their personal betting stakes, and their individual and aggregate beliefs are represented by conÿdence-weighted lower and  ...  Thus, we ÿnd support for the representation of the experts' aggregate opinion by the intersection of their respective convex sets of probability measures, but the probability measures are risk-neutral  ... 
doi:10.1016/s0378-3758(01)00213-0 fatcat:qlzqexrl7jfypkoslgzat6zjyy

The geometry of a probabilistic consensus of opinion algorithm

Ion Matei, John S. Baras
2011 Proceedings of the 2011 American Control Conference  
hull defined on a particular convex metric space where the states of the agents live and for which a detailed description is given.  ...  For review only.  ...  We show that the probabilistic algorithm for reaching consensus of opinion fits the framework of the generalized asymptotic consensus problem for a particular convex metric space (with a particular convex  ... 
doi:10.1109/acc.2011.5991448 fatcat:2yzmdmysrnbohdbggqaiq74vre
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