自定义排名

自定义排名功能允许您引入自己的业务逻辑，来控制 Cloud Talent Solution 返回的招聘信息的排名。 在网站上执行搜索的求职者可以照常设置其搜索查询和其他过滤器，并且可以向搜索请求添加排名表达式。Cloud Talent Solution 会根据求职者定义的查询确定相关招聘信息，并根据自定义排名表达式对结果进行排名。随后，它会将此排名列表返回给您，以便您可以将其显示给求职者。另外还提供有关实施自定义排名的视频教程。

优势

自定义排名允许您控制结果的列示方式。使用自定义排名可以定义可分配给自定义属性的权重。您可以使用权重和自定义属性的组合来构建自定义排名表达式，以确定所返回列表中列表项的顺序。

自定义排名基于现有搜索服务。它会利用任何客户定义的自定义属性组合中提供的值。

用例示例

最终用户搜索“软件工程师”。 贵企业希望在搜索的返回列表中将“软件工程师”置于排名更加靠前的位置。利用自定义排名，即可为这些列表设置一个值，按照自定义排名表达式确定的顺序将其显示给最终用户。

例如，您有两份几乎相同的职位列表，招聘信息 A 的每次点击费用 (CPC) 值要高于招聘信息 B。您可以设置通过权重加以调整的 CPC 自定义属性排名，从而利用自定义排名提高招聘信息 A 的曝光率。

使用方法

自定义排名支持以下数学运算符：+、-、*、/、()

您可以使用自定义属性的字段名称和这些数学运算符，来定义自定义排名表达式。

例如，假设您有两个自定义属性：CPC 和新鲜度，新鲜度表示招聘信息发布至今的天数。您希望按 CPC 和新鲜度对招聘信息进行排名，其中 CPC 占排名的 75%，新鲜度占 25%。您可以按如下方式创建自定义排名表达式：

(0.75*CPC) + (0.25 *Freshness)

代码示例

以下示例使用两个自定义属性 cpc_value 和 freshness_value 创建一个自定义排名表达式。它将自定义排名表达式设置为 (cpc_value / 2) - freshness_value。

Go

import (
	"context"
	"fmt"
	"io"

	talent "cloud.google.com/go/talent/apiv4beta1"
	talentpb "google.golang.org/genproto/googleapis/cloud/talent/v4beta1"
)

// customRankingSearch searches for jobs based on custom ranking.
func customRankingSearch(w io.Writer, projectID, companyID string) error {
	ctx := context.Background()

	// Initialize a jobService client.
	c, err := talent.NewJobClient(ctx)
	if err != nil {
		return fmt.Errorf("taleng.NewJobClient: %v", err)
	}

	// Construct a searchJobs request.
	req := &talentpb.SearchJobsRequest{
		Parent: fmt.Sprintf("projects/%s", projectID),
		// Make sure to set the RequestMetadata the same as the associated
		// search request.
		RequestMetadata: &talentpb.RequestMetadata{
			// Make sure to hash your userID.
			UserId: "HashedUsrID",
			// Make sure to hash the sessionID.
			SessionId: "HashedSessionID",
			// Domain of the website where the search is conducted.
			Domain: "www.googlesample.com",
		},
		JobQuery: &talentpb.JobQuery{
			Companies: []string{fmt.Sprintf("projects/%s/companies/%s", projectID, companyID)},
		},
		// More info on customRankingInfo.
		// https://godoc.org/google.golang.org/genproto/googleapis/cloud/talent/v4beta1#SearchJobsRequest_CustomRankingInfo
		CustomRankingInfo: &talentpb.SearchJobsRequest_CustomRankingInfo{
			ImportanceLevel:   talentpb.SearchJobsRequest_CustomRankingInfo_EXTREME,
			RankingExpression: "(someFieldLong + 25) * 0.25",
		},
		OrderBy: "custom_ranking desc",
	}

	resp, err := c.SearchJobs(ctx, req)
	if err != nil {
		return fmt.Errorf("SearchJobs: %v", err)
	}

	for _, job := range resp.GetMatchingJobs() {
		fmt.Fprintf(w, "Job: %q\n", job.GetJob().GetName())
	}

	return nil
}

Java

如需详细了解如何安装和创建 Cloud Talent Solution 客户端，请参阅 Cloud Talent Solution 客户端库。 


import com.google.cloud.talent.v4beta1.Job;
import com.google.cloud.talent.v4beta1.JobServiceClient;
import com.google.cloud.talent.v4beta1.RequestMetadata;
import com.google.cloud.talent.v4beta1.SearchJobsRequest;
import com.google.cloud.talent.v4beta1.SearchJobsResponse;
import com.google.cloud.talent.v4beta1.TenantName;
import java.io.IOException;

public class CustomRankingSearchJobs {

  public static void searchCustomRankingJobs() throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "your-project-id";
    String tenantId = "your-tenant-id";
    searchCustomRankingJobs(projectId, tenantId);
  }

  // Search Jobs using custom rankings.
  public static void searchCustomRankingJobs(String projectId, String tenantId) throws IOException {
    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests. After completing all of your requests, call
    // the "close" method on the client to safely clean up any remaining background resources.
    try (JobServiceClient jobServiceClient = JobServiceClient.create()) {
      TenantName parent = TenantName.of(projectId, tenantId);
      String domain = "www.example.com";
      String sessionId = "Hashed session identifier";
      String userId = "Hashed user identifier";
      RequestMetadata requestMetadata =
          RequestMetadata.newBuilder()
              .setDomain(domain)
              .setSessionId(sessionId)
              .setUserId(userId)
              .build();
      SearchJobsRequest.CustomRankingInfo.ImportanceLevel importanceLevel =
          SearchJobsRequest.CustomRankingInfo.ImportanceLevel.EXTREME;
      String rankingExpression = "(someFieldLong + 25) * 0.25";
      SearchJobsRequest.CustomRankingInfo customRankingInfo =
          SearchJobsRequest.CustomRankingInfo.newBuilder()
              .setImportanceLevel(importanceLevel)
              .setRankingExpression(rankingExpression)
              .build();
      String orderBy = "custom_ranking desc";
      SearchJobsRequest request =
          SearchJobsRequest.newBuilder()
              .setParent(parent.toString())
              .setRequestMetadata(requestMetadata)
              .setCustomRankingInfo(customRankingInfo)
              .setOrderBy(orderBy)
              .build();
      for (SearchJobsResponse.MatchingJob responseItem :
          jobServiceClient.searchJobs(request).iterateAll()) {
        System.out.format("Job summary: %s%n", responseItem.getJobSummary());
        System.out.format("Job title snippet: %s%n", responseItem.getJobTitleSnippet());
        Job job = responseItem.getJob();
        System.out.format("Job name: %s%n", job.getName());
        System.out.format("Job title: %s%n", job.getTitle());
      }
    }
  }
}

Python

如需详细了解如何安装和创建 Cloud Talent Solution 客户端，请参阅 Cloud Talent Solution 客户端库。 


from google.cloud import talent
from google.cloud.talent import enums
import six

def search_jobs(project_id, tenant_id):
    """Search Jobs using custom rankings"""

    client = talent.JobServiceClient()

    # project_id = 'Your Google Cloud Project ID'
    # tenant_id = 'Your Tenant ID (using tenancy is optional)'

    if isinstance(project_id, six.binary_type):
        project_id = project_id.decode("utf-8")
    if isinstance(tenant_id, six.binary_type):
        tenant_id = tenant_id.decode("utf-8")
    parent = client.tenant_path(project_id, tenant_id)
    domain = "www.example.com"
    session_id = "Hashed session identifier"
    user_id = "Hashed user identifier"
    request_metadata = {"domain": domain, "session_id": session_id, "user_id": user_id}
    importance_level = enums.SearchJobsRequest.CustomRankingInfo.ImportanceLevel.EXTREME
    ranking_expression = "(someFieldLong + 25) * 0.25"
    custom_ranking_info = {
        "importance_level": importance_level,
        "ranking_expression": ranking_expression,
    }
    order_by = "custom_ranking desc"

    # Iterate over all results
    results = []
    for response_item in client.search_jobs(
        parent,
        request_metadata,
        custom_ranking_info=custom_ranking_info,
        order_by=order_by,
    ):
        print("Job summary: {}".format(response_item.job_summary))
        print("Job title snippet: {}".format(response_item.job_title_snippet))
        job = response_item.job
        results.append(job.name)
        print("Job name: {}".format(job.name))
        print("Job title: {}".format(job.title))
    return results

Ruby

如需详细了解如何安装和创建 Cloud Talent Solution 客户端，请参阅 Cloud Talent Solution 客户端库。 

require "google/cloud/talent"

# Instantiate a client
job_service = Google::Cloud::Talent.job_service

# project_id = "Your Google Cloud Project ID"
# tenant_id = "Your Tenant ID (using tenancy is optional)"
parent = job_service.tenant_path project: project_id, tenant: tenant_id
domain = "www.example.com"
session_id = "Hashed session identifier"
user_id = "Hashed user identifier"
request_metadata = {
  domain:     domain,
  session_id: session_id,
  user_id:    user_id
}
importance_level = :EXTREME
ranking_expression = "(someFieldLong + 25) * 0.25"
custom_ranking_info = {
  importance_level:   importance_level,
  ranking_expression: ranking_expression
}
order_by = "custom_ranking desc"

# Iterate over all results.
response = job_service.search_jobs parent:              parent,
                                   request_metadata:    request_metadata,
                                   custom_ranking_info: custom_ranking_info,
                                   order_by:            order_by
response.matching_jobs.each do |element|
  puts "Job summary: #{element.job_summary}"
  puts "Job title snippet: #{element.job_title_snippet}"
  job = element.job
  puts "Job name: #{job.name}"
  puts "Job title: #{job.title}"
end

C#

如需详细了解如何安装和创建 Cloud Talent Solution 客户端，请参阅 Cloud Talent Solution 客户端库。 

public static object CustomRankingSearch(string projectId, string tenantId)
{
    JobServiceClient jobServiceClient = JobServiceClient.Create();
    TenantName name = TenantName.FromProjectTenant(projectId, tenantId);

    string domain = "www.example.com";
    string sessionId = "Hashed session identifier";
    string userId = "Hashed user identifier";
    RequestMetadata requestMetadata = new RequestMetadata
    {
        Domain = domain,
        SessionId = sessionId,
        UserId = userId
    };

    CustomRankingInfo customRankingInfo = new CustomRankingInfo
    {
        ImportanceLevel = ImportanceLevel.Extreme,
        // Custom ranking supports math operators, and Field name can be CPC or Freshness
        // https://cloud.google.com/talent-solution/job-search/docs/custom-ranking#how_to_use
        RankingExpression = "(someFieldLong + 25) * 0.25"
    };
    string orderBy = "custom_ranking desc";

    SearchJobsRequest request = new SearchJobsRequest
    {
        ParentAsTenantName = name,
        CustomRankingInfo = customRankingInfo,
        RequestMetadata = requestMetadata,
        OrderBy = orderBy
    };

    var response = jobServiceClient.SearchJobs(request);
    foreach (var result in response)
    {
        Console.WriteLine($"Job summary: {result.JobSummary}");
        Console.WriteLine($"Job title snippet: {result.JobTitleSnippet}");
        Job job = result.Job;
        Console.WriteLine($"Job name: {job.Name}");
        Console.WriteLine($"Job title: {job.Title}");
    }

    return 0;
}