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61.
Jochen Lüdering 《Applied economics》2018,50(16):1812-1823
62.
Using a sample of up to 2,503 initial public offerings (IPOs) in 32 countries from 2011–2017, we predict and find that higher levels of country-level accounting enforcement are associated with lower levels of IPO underpricing. IPOs in countries with a relatively low accounting enforcement score (second quintile) exhibit a mean underpricing of 19%, whereas the mean underpricing amounts to just 9% in countries with a relatively high score (fourth quintile). The results remain qualitatively the same when we employ a multi-level model or a difference-in-difference design. In countries that substantially strengthened their accounting enforcement in the 2003–2009 period, the level of IPO underpricing decreased significantly. We show that accounting enforcement matters for the cost of going public. 相似文献
63.
Benjamin Clapham Martin Haferkorn Kai Zimmermann 《The Journal of Financial Research》2020,43(4):933-964
We analyze limit order book resiliency following liquidity shocks initiated by large market orders. Based on a unique data set, we investigate whether high-frequency traders are involved in replenishing the order book. Therefore, we relate the net liquidity provision of high-frequency traders, algorithmic traders, and human traders around these market impact events to order book resiliency. Although all groups of traders react, our results show that only high-frequency traders reduce the spread within the first seconds after the market impact event. Order book depth replenishment, however, takes significantly longer and is mainly accomplished by human traders’ liquidity provision. 相似文献
64.
Jochen Hartmann Juliana Huppertz Christina Schamp Mark Heitmann 《International Journal of Research in Marketing》2019,36(1):20-38
Online social media drive the growth of unstructured text data. Many marketing applications require structuring this data at scales non-accessible to human coding, e.g., to detect communication shifts in sentiment or other researcher-defined content categories. Several methods have been proposed to automatically classify unstructured text. This paper compares the performance of ten such approaches (five lexicon-based, five machine learning algorithms) across 41 social media datasets covering major social media platforms, various sample sizes, and languages. So far, marketing research relies predominantly on support vector machines (SVM) and Linguistic Inquiry and Word Count (LIWC). Across all tasks we study, either random forest (RF) or naive Bayes (NB) performs best in terms of correctly uncovering human intuition. In particular, RF exhibits consistently high performance for three-class sentiment, NB for small samples sizes. SVM never outperform the remaining methods. All lexicon-based approaches, LIWC in particular, perform poorly compared with machine learning. In some applications, accuracies only slightly exceed chance. Since additional considerations of text classification choice are also in favor of NB and RF, our results suggest that marketing research can benefit from considering these alternatives. 相似文献
65.
In the present paper we analyse how the estimators from Merz u. Wüthrich (2007) could be generalised to the case of N correlated run-off triangles. The simultaneous view on N correlated subportfolios is motivated by the fact, that in practice a run-off portfolio often has to be divided in subportfolios, so that the homogeneity assumption of the claims reserving method on each subportfolio is satisfied. We derive an explicit formula for the process-variance, the estimation-error and the prediction error made by the forecast for the claims development result with the Chain-Ladder method. We illustrate the results by an example. 相似文献
66.
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68.
Jochen Reb 《Group Decision and Negotiation》2010,19(5):457-477
Choosing the right counterpart can have a significant impact on negotiation success. Unfortunately, little research has studied
such negotiation counterpart decisions. Three studies examined the influence of past negotiations on preferences to negotiate
again with a counterpart. Study 1 found that the more favorable a past negotiated agreement the stronger the preference to
negotiate with the counterpart in the future. Moreover, this relation was mediated through liking of the counterpart. Study
2 manipulated the difficulty of achieving a favorable agreement in the negotiation and found a significant effect of this
situational factor such that subsequent counterpart preferences were less favorable when the negotiation was difficult. Similar
to Study 1, this effect was mediated through liking of the counterpart. Study 3 examined the possibility of debiasing negotiator
preferences from the biasing influence of situational characteristics by providing relevant information about the negotiation
situation. Replicating the results of Study 2, negotiation difficulty affected counterpart preferences before additional information
was given or when irrelevant information was given. However, once negotiators received relevant information on the negotiation
situation, the effect of negotiation difficulty disappeared. Theoretical and practical implications are discussed. 相似文献
69.
The Internet and related technologies have vastly expanded the variety of products that can be profitably promoted and sold
by online retailers. Furthermore, search and recommendation tools reduce consumers’ search costs in the Internet and enable
them to extend their search from a few easily found best-selling products (blockbusters) to a large number of less frequently
selling items (niches). As a result, Long Tail sales distribution patterns emerge that illustrate an increasing demand in
niches. We show in this article how different classes of search and recommendation tools affect the distribution of sales
across products, total sales, and consumer surplus. We hereby use an agent-based simulation which is calibrated based on real
purchase data of a video-on-demand retailer. We find that a decrease in search costs through improved search technology can
either shift demand from blockbusters to niches (search filters and recommendation systems) or from niches to blockbusters
(charts and top lists). We break down demand changes into substitution and additional consumption and show that search and
recommendation technologies can lead to substantial profit increases for retailers. We also illustrate that decreasing search
costs through search and recommendation technologies always lead to an increase in consumer surplus, suggesting that retailers
can use these technologies as competitive advantage. 相似文献
70.
In this paper we introduce the concept of an overall power function that is meant to combine two sources of a party's power in a parliament. The first source is based on the possibilities for the party to be part of a majority coalition and it is typically modeled using a cooperative simple game. The second source takes into account parties' asymmetries outside the cooperative game and it is displayed by a vector of exogenously given weights. We adopt a normative point of view and provide an axiomatic characterization of a specific overall power function, in which the weights enter in a proportional fashion. 相似文献