Search results for "LDA"
showing 10 items of 570 documents
Review of Metabolismo e spazio simbolico. Paradigmi mediali della Sicilia contemporanea
2018
Review of the volume Metabolismo e spazio simbolico. Paradigmi mediali della Sicilia contemporanea, Napoli-Salerno: Orthotes, 2018, edited by Sieglinde Borvitz.In the anthology, the authors question the current cultural production in Sicily. As the preface by publisher Sieglinde Borvitz (pp. 5-15) makes clear, the contributions address their topic using the concept of metabolism as a symbol of the ongoing interaction between the cultural scene and the environment. The cultural studies approach sheds light on the procedural character of phenomena such as mythopoesis, urban regeneration, the dramatization of decay, the ritualization and spectacularization of folklore on the island.
La Religion triomphante, militante et martyre. Piété et valeurs guerrières dans les représentations de l’ordre de Malte
2018
The Order of St. John always paid special attention to the publications documenting its military activities, in order to justify both its mission in defence of the faith and its requests to Christian princes for human and material resources. This editorial investment was particularly strong after the dramatic sieges of Rhodes (1480, 1522) and Malta (1565) by the Ottomans. In 1619, just a few years after the Order’s new landing in Malta, "Il glorioso trionfo della sacrosanta religion militare de’ nobili, valorosi e invitti cavalieri di S. Giovanni Gierosolimitano" was published in Italian and Spanish. This article analyses the narrative strategies used in this text within the context of coev…
Statistically Validated Networks for assessing topic quality in LDA models
2022
Probabilistic topic models have become one of the most widespread machine learning technique for textual analysis purpose. In this framework, Latent Dirichlet Allocation (LDA) (Blei et al., 2003) gained more and more popularity as a text modelling technique. The idea is that documents are represented as random mixtures over latent topics, where a distribution overwords characterizes each topic. Unfortunately, topic models do not guarantee the interpretability of their outputs. The topics learned from the model may be only characterized by a set of irrelevant or unchained words, being useless for the interpretation. Although many topic-quality metrics were proposed (Newman et al., 2009; Alet…
MEASURING TOPIC COHERENCE THROUGH STATISTICALLY VALIDATED NETWORKS
2020
Topic models arise from the need of understanding and exploring large text document collections and predicting their underlying structure. Latent Dirichlet Allocation (LDA) (Blei et al., 2003) has quickly become one of the most popular text modelling techniques. The idea is that documents are represented as random mixtures over latent topics, where a distribution over words characterizes each topic. Unfortunately, topic models give no guaranty on the interpretability of their outputs. The topics learned from texts may be characterized by a set of irrelevant or unchained words. Therefore, topic models require validation of the coherence of estimated topics. However, the automatic evaluation …
Erinnerung an die Livländische Schweiz: Photographie
2019
Three 2,5-dialkoxy-1,4-diethynylbenzene derivatives
2008
2,5-Diethoxy-1,4-bis[(trimethylsilyl)ethynyl]benzene, C20H30O2Si2, (I), constitutes one of the first structurally characterized examples of a family of compounds, viz. the 2,5-dialkoxy-1,4-bis[(trimethylsilyl)ethynyl]benzene derivatives, used in the preparation of oligo(phenyleneethynylene)s via Pd/Cu-catalysed cross-coupling. 2,5-Diethoxy-1,4-diethynylbenzene, C14H14O2, (II), results from protodesilylation of (I). 1,4-Diethynyl-2,5-bis(heptyloxy)benzene, C24H34O2, (III), is a long alkyloxy chain analogue of (II). The molecules of compounds (I)–(III) are located on sites with crystallographic inversion symmetry. The large substituents either in the alkynyl group or in the benz…
Una revisión de los sistemas generadores y modelos de probabilidad descriptivos de la distribución de la Renta
2000
La importancia innegable de la modelización de la distribución de la renta es el origen del presente trabajo en el que se realiza un estudio, básicamente teórico, acerca de los sistemas generadores de renta y se lleva a cabo una recopilación de los modelos de probabilidad que se han utilizado, de forma más o menos generalizada a lo largo del último siglo, para explicar la renta. El estudio realizado es más exhaustivo en unos casos que en otros, poniendo de manifiesto el carácter pionero de la distribución de Pareto, y analizando en muchos de los casos las medidas más importantes de las distribuciones estudiadas, así como la relación de algún parámetro de las mismas con la desigualdad en el …
Revista española de educación comparada
2016
Monográfico con el título: “La educación en América Latina hoy” Resumen basado en el de la publicación Título, resumen y palabras clave también en inglés Se aborda una comprensión de la infancia centroamericana y su derecho a la educación desde los enfoques de Derechos Humanos y de Capacidades de Sen y Nussbaum. Así, partiendo de las premisas de que niños, niñas y adolescentes son sujetos de derechos; la infancia constituye una etapa con identidad propia, clave en el desarrollo de las personas y la educación es un derecho humano fundamental, se profundiza en el establecimiento y estudio de diversos escenarios educativos en los países centroamericanos y en el impacto de las desigualdades de …