We study multi-answer retrieval, an under-explored problem that requires retrieving passages to cover multiple distinct answers for a given question. This task requires joint modeling of retrieved passages, as models should not repeatedly retrieve pa
ssages containing the same answer at the cost of missing a different valid answer. Prior work focusing on single-answer retrieval is limited as it cannot reason about the set of passages jointly. In this paper, we introduce JPR, a joint passage retrieval model focusing on reranking. To model the joint probability of the retrieved passages, JPR makes use of an autoregressive reranker that selects a sequence of passages, equipped with novel training and decoding algorithms. Compared to prior approaches, JPR achieves significantly better answer coverage on three multi-answer datasets. When combined with downstream question answering, the improved retrieval enables larger answer generation models since they need to consider fewer passages, establishing a new state-of-the-art.
We present a novel technique for zero-shot paraphrase generation. The key contribution is an end-to-end multilingual paraphrasing model that is trained using translated parallel corpora to generate paraphrases into meaning spaces'' -- replacing the f
inal softmax layer with word embeddings. This architectural modification, plus a training procedure that incorporates an autoencoding objective, enables effective parameter sharing across languages for more fluent monolingual rewriting, and facilitates fluency and diversity in the generated outputs. Our continuous-output paraphrase generation models outperform zero-shot paraphrasing baselines when evaluated on two languages using a battery of computational metrics as well as in human assessment.
The wide geographical spread and the exponential growth of the numbers of goats
around the world clearly demonstrate the ability of these ruminants to adapt to
harsh climates and grazing land. The aim of this study was to assess the genetic
divers
ity of 42 samples of Syrian goats from many domestication stations including
Jabali, Shami and hybrid (hybridization between both Shami and Jabali). The study
was done by DNA extraction of these samples, application of SSR technology using
7 microstellite markers. The alleles number of markers were 29 alleles, at a rate of
4.1 allele for each genetic locus. The number of alleles of each locus ranged from 3
alleles in genetically markers (BMS1714, INRAD07, SRCRSP09) to 8 alleles at the
genetic marker SRCRSP01. The rate of allele-frequency across all studied genetic
sites ranged from 0.071429 with the molecular size of 210 bp for the McM527
genetic site to 0.97619 with a molecular size of 55 bp for the SRCRSP09 genetic site.
Crustacean Zooplankton Was Studied In Five ponds In AL- Sinn's
Fish farm. As a one Of The Most Important components Fresh
Water Ecosystem . The samples of zooplankton were collected
During Period From November 2013 To March 2015, By One
Sampling a Month.
The research aims to identify the role that foreign trade plays in the
Syrian economy,
They are an important part of the national economy, and which is
secured need the economy to build production capacity of capital
goods, and through the discha
rge of the flooding of the need for
domestic demand of the product, and therefore the external sector
developments reflect the productive structure of the national
economy, employment and price and income level. . and also the
effects of economic policies.
The researcher has addressed the economic reforms that directly
affect the foreign trade, and then analyzed the structure of the
foreign trade to discover the real economic potentials and the
necessary requirements for the promotion.
The search includes determining genus and species according
to the flower's type and outside forms. So , 24 land medical species
belong to 20 genus, all from Asteraceae, that is according to some
references, registries and Atlas especially that one which studied
turning this region into flowering one.
Randomly amplified polymorphic DNA (RAPD) technique was used to study the genetic relationship among 10 wild accessions of Origanum syriacum grown in Syria.
The results of this study may have a great impact on the
national biodiversity program whic
h lacks the employment of
molecular techniques, and thus we recommend making use
of these techniques in genotype identification in general, and
studying the relationship among them, and in particular in
studying important wild species of medical importance which
have not been described yet on the molecular level.
This study aims to define bird species that use artificial lakes in Syrian coast, and
evaluate their population size for management and protection of wildlife. Four different
sites were chosen in Syrian coast, which considered the most important ar
tificial lakes.
Point counts method was used in bird survey in November, December, January, February,
March in 2011. 15 waterbird species were recorded belonging to 9 family and 6 order.
Wading birds were the main component of waterbird (60% of all species) in Syrian
coast. Populations size was 1 to 300 individuals. Diversity of birds and their Populations
were greatest in sites which are rich in food ( especially fish). The results showed a
difference in composition of bird communities in studied sites.
Pinus brutia cover 67.87% of AlFronloq protected area, this forest provide habitat
for wildlife especially forest birds. The aim of this study is to define bird species that use
Pinus brutia forest and their relation to vegetation characteristics.W
e listed 63 bird species,
9 of them recorded for first time, 31.8% of species are resident in study area, where
raptors presented 15.9%.
The study showed positive correlation between species richness and plant richness
(R=0.588, P= 0.007). Shrubs layer coverage and richness affected positively bird species
richness and density. The study showed also decreasing of bird species richness with
Altitude, while raptors richness were increased with Altitude.The dominat species were
Coal tit Parus ater, wren Troglodytes troglodytes ,whereas species like Chaffinch Fringilla
coelebs, chiffchaff Phylloscopus collybita were the most abundant.
A total of 370 bottles of noncarbonated natural mineral water (domestic and
imported) with different bottling dates, were collected directly from the
markets in Syria one word one year 2006.
Bacterial diversity was approached with tentative
identification of the strains isolated using biochemical and enzymatic criteria
(with the aid of API 20 NE identification system for nonfermenters).
