MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 02/01/00 through 02/29/00
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 623 961 1,584
Davis 587 19 606
Irvine 959 0 959
Los Angeles 613 1,072 1,685
Riverside 357 184 541
San Diego 112 567 679
San Francisco 469 0 469
Santa Barbara 180 615 795
Santa Cruz 252 250 502
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 16 192 208
Other-Network UC n/a 762 762
_______ ______ _____
4,168 4,622 8,790
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 97 403 5,857
2-4 a.m. 34 93 855
4-6 a.m. 35 125 1,191
6-8 a.m. 125 558 4,347
8-10 a.m. 778 2,851 26,496
10-12 a.m. 1,474 6,373 73,320
12-2 p.m. 1,746 7,226 80,061
2-4 p.m. 1,809 7,311 70,973
4-6 p.m. 1,263 5,227 67,000
6-8 p.m. 637 2,733 36,365
8-10 p.m. 523 2,176 22,629
10-12 p.m. 269 1,182 17,685
__________ __________ __________ _________________
Total: 8,790 36,258 406,779
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,755 3,607 6,362
Davis 1,955 74 2,029
Irvine 4,399 0 4,399
Los Angeles 2,921 4,914 7,835
Riverside 1,713 678 2,391
San Diego 301 1,895 2,196
San Francisco 1,731 0 1,731
Santa Barbara 768 2,528 3,296
Santa Cruz 1,219 1,091 2,310
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 23 888 911
Other-Network UC n/a 2,798 2,798
_______ ______ _____
17,785 18,473 36,258
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 35,419 41,046 76,465
Davis 21,270 559 21,829
Irvine 44,156 0 44,156
Los Angeles 49,215 56,155 105,370
Riverside 14,801 8,738 23,539
San Diego 2,019 15,079 17,098
San Francisco 23,082 0 23,082
Santa Barbara 7,090 26,251 33,341
Santa Cruz 10,698 8,255 18,953
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 144 13,312 13,456
Other-Network UC n/a 29,490 29,490
_______ ______ _____
207,894 198,885 406,779
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 2.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 9:16
Average session length (minutes:seconds) 14:38
Longest session recorded (minutes:seconds) 300:42
Average number of searches completed per session 4.1
Retrievals per search - median 10.0
Retrievals per search - average 857.8
Retrievals per search - standard deviation 7147.1
Percent of searches completed with 0 results 23.6%
Percent of searches entered that are long 3.0%
Percent of long searches completed
(includes partial results) 59.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 32,455 28.2%
DISPLAY (excluding automatic displays) 49,480 43.0%
BROWSE 223 0.2%
SELECT 102 0.1%
HELP 2,099 1.8%
EXPLAIN 2,126 1.8%
SET/RESET 2,485 2.2%
SHOW 404 0.4%
ADD ON (AND, OR, AND NOT) 3,775 3.3%
LOGON or LOGOFF 12,983 11.3%
COMMENT 0 0.0%
SAVE 5,520 4.8%
USE 26 0.0%
OTHER 3,721 3.2%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 13,221 37.3% 2,485 18.8% 18 69.1 201.3
TITLE WORD 4,301 12.1% 1,367 31.8% 7 204.7 2875.6
EXACT TITLE 624 1.8% 260 41.7% 1 26.1 95.2
JOURNAL 734 2.1% 214 29.2% 539 3049.3 10293.7
EXACT JOURNAL 456 1.3% 133 29.2% 530 1597.0 2824.2
SUBJECT 3,499 9.9% 1,961 56.0% 1,103 6223.0 17040.4
EXACT SUBJECT 283 0.8% 134 47.3% 496 6699.3 31024.5
KEYWORD 9,900 27.9% 1,557 15.7% 59 1848.5 11295.8
FORM/PUB TYPE 180 0.5% 21 11.7% 51 998.5 5007.3
DATE 1,326 3.7% 218 16.4% 5 55.5 298.7
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 5 0.0% 0 0.0% 764 486.4 380.1
AUTHOR AFFIL. 8 0.0% 1 12.5% 11 228.9 363.3
CONFERENCE 2 0.0% 1 50.0% 1 1.0 0.0
LANGUAGE 73 0.2% 7 9.6% 124 741.3 1888.3
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 3 0.0% 1 33.3% 14 13.5 0.7
ID NUMBER 9 0.0% 9 100% 0 0.0 0.0
PERIODICAL 688 1.9% 156 22.7% 4 110.8 792.1
EXACT PE 58 0.2% 10 17.2% 2 49.5 210.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 121 0.3% 49 40.5% 42 1387.5 9389.8
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 3,293 10.3% 791 24.0% 6 172.9 3175.7
Single 28,756 89.7% 6,962 24.2% 36 1330.7 8981.6
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
SUBJECT 211 94.6% 76 36.0% 3 8.3 12.1
EXACT SUBJECT 12 5.4% 6 50.0% 1 1.5 0.8
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.4%
SHORT 91.7%
LONG 1.0%
TAGS 0.1%
FIELDS 1.0%
BROWSE REVIEW 0.3%
BROWSE LONG 0.1%
PERIODICALS 1.7%
COMMENTS 0.0%
Other 2.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.8%
Ten most frequent errors:
1. First word of command is invalid 31.2%
2. NS command - no next screen 30.3%
3. FIND command with invalid index name 8.3%
4. PS command - no previous screen 5.9%
5. DISPLAY command contains invalid word 4.6%
6. Valid command at an inappropriate time 2.6%
7. Search term missing from search command 2.1%
8. Add-on search, no index name after verb 1.3%
9. Command contains escape or arrow key 1.2%
10. DISPLAY command-record numbers too large 1.2%
11. All others 11.4%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 28.0%
2. GUIDE 20.2%
3. FIND (PSY DB) 8.7%
4. COMMANDS (ABI/PSY DBS) 5.7%
5. Unrecognized term 4.5%
6. INDEXES (PSY DB) 4.3%
7. ADDON SEARCH 4.1%
8. DISPLAY (INS/PSY DBS) 3.9%
9. MAIL 2.6%
10. FIND LOCATION 1.7%
11. All others 16.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.9%
2. First word of command is invalid 15.6%
3. DISPLAY command-first of >1 screen 9.0%
4. FIND command with invalid index name 6.8%
5. DISPLAY command - middle of >1 screen 6.7%
6. FIND command with zero results 5.5%
7. FIND command retrieves >1 book 4.8%
8. DISPLAY command-complete in one screen 4.3%
9. PS command - no previous screen 3.2%
10. NS command - no next screen 3.0%
11. All others 21.3%
Ten most frequent SHOW requests:
1. SEARCH 41.7%
2. HISTORY 36.6%
3. MAIL STATUS 9.6%
4. GLOSSARY 2.8%
5. MAIL SETTINGS 2.0%
6. SETTINGS (INS/PSY DBS) 1.0%
7. PUBLICATION TYPES (PSY DB) 0.8%
8. SYSTEM NEWS 0.8%
9. LOCAL INFORMATION 0.8%
10. PSYCINFO NEWS 0.5%
11. All others 3.5%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)