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Latest ISSUE Released at 11:30 AM (CANBERRA TIME) 19/09/2014   

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Catalogue Number

Friday 19 September 2014
First Issue
    Research Paper: Methodological Approaches for Utilising Satellite Imagery to Estimate Official Crop Area Statistics (Methodology Advisory Committee), September 2014
    A key strategic goal for the ABS is to exploit emerging sources of data to either partially replace, supplement or validate existing data collections in order to reduce costs, improve quality and produce more responsive and relevant statistical products. Given this imperative, there is a pressing need to assess the available techniques for analysing “big data” problems in terms of their quantifiable statistical reliability and computational feasibility.

    In October 2013, methodological research effort commenced at the ABS to investigate the viability of using satellite imagery data to estimate crop area statistics. Other Australian organisations that have decades of experience in analysing satellite imagery data have been pursuing classification of satellite data at the crop type level, but the lack of adequate ground-truth data available in Australia, from which classification methods can learn, has been a major obstacle. The unit record level data that the ABS regularly collects as part of the Rural Environment and Agricultural Statistics Program, however, has the potential to provide a rich source of reference data to train classifiers.

    As well as formulating the statistical problem of crop area estimation with satellite imagery data, we outline in this paper the challenges in working with satellite imagery data and present our proposed methodological approaches for estimating crop area statistics, which include four classification methods; namely, support vector machines, Gaussian maximum likelihood classification, classification with kernel density estimation and multinomial logistic regression. We also propose a statistical framework for estimating the bias and variance of crop area estimates that are calculated using crop type predictions for each pixel, given that our ultimate goal is to release these crop area estimates as official statistics. Methods for quantifying the statistical error of such estimates appear to be lacking in the satellite imagery analysis literature, given the focus on prediction.
Replacement Content
    Disability, Ageing and Carers, Australia: Summary of Findings, 2012
    This release contains replacement content to correct a typographic error on the Carers Characteristics page. The All persons estimates for Table 34 in the Australian Capital Territory data cube will be corrected due to the erroneous inclusion of additional categories and misalignment of data in the previously published table. The largest impact of this error is on the estimates for Moderate and Mild core activity limitation. The Data Item List will be updated to include income decile boundaries.
Replacement Content
    Microdata: Disability, Ageing and Carers, Australia, 2012
    The Basic CURF will be reissued to correct a number of issues identified since the initial release. In addition, the CURF Data Item List will be updated to include income decile boundaries.
Replacement Content
    Labour Mobility, Australia, February 2013
    Data presented in the 2006, 2008, 2010, 2012 and 2013 Labour Mobility publications regarding Main reasons for ceasing last job has been revised. This change effects the categories Voluntary Reasons for ceasing last job - Retired, new business or other reasons and Involuntary reasons - Retrenched, employer went out of business.

    The updated data will be be released on Friday 19 September 2014. We apologise for any inconvenience.

Monday 22 September 2014
No scheduled releases today.

Tuesday 23 September 2014
No scheduled releases today.

Wednesday 24 September 2014
Additional Information
    Water Use on Australian Farms, 2012-13
    Additional datacubes for regional geographies released.
Additional Information
    Land Management and Farming in Australia, 2012-13
    Additional datacubes for regional geographies released.
Additional Information
    Agricultural Commodities, Australia, 2012-2013
    Additional datacubes for regional geographies released.
Additional Information
    Value of Agricultural Commodities Produced, Australia, 2012-13
    Additional datacubes for regional geographies released.

Thursday 25 September 2014
    Methodological News, September 2014
    The Methodological News is a quarterly information bulletin from the Methodology and Data Management Division. The newsletter features articles and developments in relation to work done with the division.
    Australian Demographic Statistics, March 2014
    Quarterly estimates of total population for states, territories and Australia. Includes the most recent estimates of the population in five-year age groups; numbers (and some rates) of births, deaths, infant deaths, interstate and overseas movements. Quarterly and/or annual time series tables throughout. Also includes projected resident populations, projected population in households, projected number of households and projected average household size for states, territories and Australia.

    Periodically, articles on specific demographic topics will be released on the ABS web site in conjunction with this publication.
Replacement Content
    Water Use on Australian Farms, 2012-13
    Water Use on Australian Farms, 2012-13 has replacement content to correct mislabelled data items in one of the publication's data cubes.
    Australian National Accounts: Financial Accounts, June 2014
    Contains information about the level (stock) of financial assets and liabilities of each sector of the economy, as well as information about financial transactions (i.e. flows of funds) between the sectors. Tables show the characteristics of the market for each financial instrument (e.g. which sectors borrow by issuing bills of exchange and which buy bills as investments).
First Issue
    Information paper: Product changes to the Financial Accounts: Finance and Wealth, 2014
    The purpose of this paper is to inform users of the upcoming changes to the product Australian National Accounts: Financial Accounts (cat. no. 5232.0), to be referred to post the expansion of capital account estimates as Australian National Accounts: Finance and Wealth (cat. no. 5232.0).

    This release details the changes to the 5232.0 product including the removal of the PDF file, title change and expansion of time series spreadsheets to be introduced in the September quarter 2014 issue of cat. no. 5232.0. To be released on Thursday, the 18th of December 2014.

    This information paper includes previews of the time series spreadsheets and associated series identifiers to be published in December 2014.
    Job Vacancies, Australia, August 2014
    Contains estimates of the number of job vacancies with state and territory and industry dissections.

Friday 26 September 2014
No scheduled releases today.

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Commonwealth of Australia 2014

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