نتایج جستجو برای: negative data
تعداد نتایج: 2824401 فیلتر نتایج به سال:
In PU learning, a binary classifier is trained from positive (P) and unlabeled (U) data without negative (N) data. Although N data is missing, it sometimes outperforms PN learning (i.e., ordinary supervised learning). Hitherto, neither theoretical nor experimental analysis has been given to explain this phenomenon. In this paper, we theoretically compare PU (and NU) learning against PN learning...
مدل سازی پیش بینی پراکنش گونه های گیاهی بر اساس ارتباط بین داده های حضور یک گونه و متغیرهای محیطی تعریف می شود. امروزه در عرصه اکولوژی گیاهی، تهیه نقشه های پیش بینی پراکنش گونه ای یا تیپ های گیاهی با توسعه روش های آماری و سیستم های اطلاعات جغرافیایی، مورد توجه ویژه قرار گرفته است. به منظور مدل سازی رویشگاه بالقوه ریواس (rheum ribes l.) در استان اصفهان از دو روش مدل سازی حداکثر آنتروپی و ژنتیک ا...
the purpose of this study was the relationship between problem – solvi ability with fdi cognitive style of students.the research method was correlation method. for data analysis pearson test was used. statistical society in this research was all the students of alligoodarz city in 1391-92 year.to sampling of statiscal population was used sampling multi-stage random the size of sample selected 2...
having conducted the experiment and analysed the data, the researcher computed the groups mean scores and variances for the test relating to the research question. as the final atep, a t-test was conodonted for the hypothesis. as noted earlier, the significance level was determined at .05 and .01 respectively. the observed t-value was higher than the critical t-value at. 5 and .01 levels. conse...
روانشناسی عامه، مشوقی است که " قدرت نیروی تفکر مثبت " را بدانیم از " مکالمه درونی مثبت " در جهت اعتلاء تفکر استفاده کنیم. " این فلسفه نیک اندیشی " نه در همه موارد اما یقیناً در پاره ای موارد کارآمد است. در بعضی از مواقع میزان مناسبی از احتیاط شک و حتی ظن می تواند در سالمتر نمودن انتخاب تأثیر شایانی داشته باشد.
Many studies have been conducted on the characteristics of hydraulic jumps over horizontal basins. On sloping basins, however, few such studies have been performed so that the issue requires more investigation. A significant number of studies has also been conducted on basins with positive slopes but comparatively few have been carried out on basins with negative slopes. This study was carried ...
In this paper, we propose Hurdle regression models for analysing count responses with extra zeros. A method of estimating maximum likelihood is used to estimate model parameters. The application of the proposed model is presented in insurance dataset. In this example, there are many numbers of claims equal to zero is considered that clarify the application of the model with a zero-inflat...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید