MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 02/01/01 through 02/28/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 268 794 1,062
Davis 1,125 2 1,127
Irvine 402 0 402
Los Angeles 111 525 636
Riverside 105 118 223
San Diego 61 504 565
San Francisco 283 0 283
Santa Barbara 41 167 208
Santa Cruz 103 151 254
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 16 117 133
Other-Network UC n/a 676 676
_______ ______ _____
2,515 3,054 5,569
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 61 288 3,466
2-4 a.m. 37 123 1,330
4-6 a.m. 548 2,290 6,936
6-8 a.m. 92 401 5,043
8-10 a.m. 463 1,526 13,111
10-12 a.m. 876 3,294 30,972
12-2 p.m. 977 3,757 41,705
2-4 p.m. 1,086 4,158 43,439
4-6 p.m. 728 3,087 33,911
6-8 p.m. 316 1,847 14,685
8-10 p.m. 249 1,146 13,920
10-12 p.m. 136 513 4,595
__________ __________ __________ _________________
Total: 5,569 22,430 213,113
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 1,003 3,297 4,300
Davis 4,435 8 4,443
Irvine 1,469 0 1,469
Los Angeles 592 2,114 2,706
Riverside 517 517 1,034
San Diego 204 2,868 3,072
San Francisco 1,006 0 1,006
Santa Barbara 185 675 860
Santa Cruz 327 495 822
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 37 455 492
Other-Network UC n/a 2,226 2,226
_______ ______ _____
9,775 12,655 22,430
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 13,987 40,514 54,501
Davis 28,956 12 28,968
Irvine 16,696 0 16,696
Los Angeles 7,656 20,253 27,909
Riverside 4,519 6,540 11,059
San Diego 939 18,766 19,705
San Francisco 10,613 0 10,613
Santa Barbara 920 5,680 6,600
Santa Cruz 7,131 5,294 12,425
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 235 4,816 5,051
Other-Network UC n/a 19,586 19,586
_______ ______ _____
91,652 121,461 213,113
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 1.9
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) 6:09
Average session length (minutes:seconds) 12:11
Longest session recorded (minutes:seconds) 437:31
Average number of searches completed per session 4.0
Retrievals per search - median 6.0
Retrievals per search - average 2011.8
Retrievals per search - standard deviation 13016
Percent of searches completed with 0 results 25.7%
Percent of searches entered that are long 2.7%
Percent of long searches completed
(includes partial results) 67.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 19,768 30.4%
DISPLAY (excluding automatic displays) 25,084 38.6%
BROWSE 153 0.2%
SELECT 28 0.0%
HELP 807 1.2%
EXPLAIN 853 1.3%
SET/RESET 2,076 3.2%
SHOW 224 0.3%
ADD ON (AND, OR, AND NOT) 2,658 4.1%
LOGON or LOGOFF 8,360 12.9%
COMMENT 1 0.0%
SAVE 3,438 5.3%
USE 12 0.0%
OTHER 1,742 2.7%
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 8,285 33.4% 1,614 19.5% 15 61.5 180.7
TITLE WORD 2,372 9.6% 720 30.4% 8 82.6 318.9
EXACT TITLE 290 1.2% 117 40.3% 1 16.0 56.6
JOURNAL 526 2.1% 151 28.7% 433 3526.5 14424.9
EXACT JOURNAL 382 1.5% 120 31.4% 430 1813.1 3060.2
SUBJECT 1,504 6.1% 826 54.9% 375 5090.2 15035.0
EXACT SUBJECT 1,860 7.5% 1,330 71.5% 2 416.4 2217.7
KEYWORD 4,604 18.6% 754 16.4% 46 1598.6 10962.9
FORM/PUB TYPE 85 0.3% 16 18.8% 18 529.8 1474.2
DATE 2,853 11.5% 1,458 51.1% 3 35.1 160.9
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 17 0.1% 3 17.6% 24 1946.6 6672.8
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 33 0.1% 3 9.1% 152 423.3 1046.9
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 1 0.0% 0 0.0% 23 23.0 0.0
ID NUMBER 498 2.0% 0 0.0% 1 1.1 0.7
PERIODICAL 343 1.4% 68 19.8% 4 44.4 204.0
EXACT PE 43 0.2% 7 16.3% 2 13.3 48.1
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 1,104 4.5% 670 60.7% 2 581.9 2660.2
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 4,093 20.9% 1,811 44.2% 4 57.7 334.5
Single 15,486 79.1% 3,524 22.8% 28 1027.2 7773.9
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 143 93.5% 32 22.4% 1 9.1 18.9
EXACT SUBJECT 10 6.5% 5 50.0% 1 1.6 0.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.4%
SHORT 88.2%
LONG 1.3%
TAGS 1.9%
FIELDS 2.6%
BROWSE REVIEW 0.4%
BROWSE LONG 0.2%
PERIODICALS 2.0%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.5%
Ten most frequent errors:
1. NS command - no next screen 27.1%
2. First word of command is invalid 24.1%
3. DISPLAY command - no FIND results 18.6%
4. FIND command with invalid index name 7.7%
5. PS command - no previous screen 3.7%
6. DISPLAY command contains invalid word 3.1%
7. Search term missing from search command 2.1%
8. Valid command at an inappropriate time 1.6%
9. DISPLAY command-record numbers too large 1.0%
10. Command contains escape or arrow key 0.9%
11. All others 10.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 26.4%
2. GUIDE 19.7%
3. FIND (PSY DB) 8.4%
4. COMMANDS (ABI/PSY DBS) 6.3%
5. Unrecognized term 4.7%
6. MAIL 4.2%
7. INDEXES (PSY DB) 4.2%
8. ADDON SEARCH 3.4%
9. DISPLAY (INS/PSY DBS) 3.0%
10. SEARCH (PSY DB) 1.6%
11. All others 17.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.4%
2. First word of command is invalid 14.8%
3. DISPLAY command-first of >1 screen 9.0%
4. DISPLAY command - middle of >1 screen 8.1%
5. FIND command with invalid index name 8.0%
6. FIND command with zero results 6.8%
7. FIND command retrieves >1 book 4.5%
8. DISPLAY command-complete in one screen 3.5%
9. NS command - no next screen 3.1%
10. PS command - no previous screen 2.5%
11. All others 21.4%
Ten most frequent SHOW requests:
1. HISTORY 44.5%
2. SEARCH 26.5%
3. MAIL STATUS 15.2%
4. PSYCINFO NEWS 5.2%
5. GLOSSARY 2.4%
6. MAIL SETTINGS 1.9%
7. SETTINGS (INS/PSY DBS) 1.4%
8. DISPLAY (MED/INS/PSY DBS) 0.9%
9. MELVYL 0.5%
10. EXPERIMENTS 0.5%
11. All others 0.9%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)