MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 05/01/00 through 05/31/00
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 220 476 696
Davis 464 6 470
Irvine 436 0 436
Los Angeles 296 531 827
Riverside 197 173 370
San Diego 45 406 451
San Francisco 228 0 228
Santa Barbara 115 365 480
Santa Cruz 348 138 486
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 3 96 99
Other-Network UC n/a 602 602
_______ ______ _____
2,352 2,793 5,145
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 63 292 2,564
2-4 a.m. 31 158 1,215
4-6 a.m. 25 102 2,542
6-8 a.m. 101 366 3,654
8-10 a.m. 402 1,524 11,164
10-12 a.m. 765 2,910 30,027
12-2 p.m. 964 3,745 40,747
2-4 p.m. 1,193 4,469 49,460
4-6 p.m. 790 3,178 38,646
6-8 p.m. 313 1,353 15,777
8-10 p.m. 289 1,186 13,646
10-12 p.m. 209 967 10,842
__________ __________ __________ _________________
Total: 5,145 20,250 220,284
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 766 1,847 2,613
Davis 1,813 8 1,821
Irvine 1,694 0 1,694
Los Angeles 1,236 2,199 3,435
Riverside 848 713 1,561
San Diego 141 1,379 1,520
San Francisco 925 0 925
Santa Barbara 533 1,615 2,148
Santa Cruz 1,522 588 2,110
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 6 378 384
Other-Network UC n/a 2,039 2,039
_______ ______ _____
9,484 10,766 20,250
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 9,013 19,789 28,802
Davis 20,320 88 20,408
Irvine 18,191 0 18,191
Los Angeles 13,014 23,979 36,993
Riverside 8,559 9,901 18,460
San Diego 651 12,770 13,421
San Francisco 8,234 0 8,234
Santa Barbara 4,546 17,426 21,972
Santa Cruz 19,718 6,119 25,837
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 29 3,253 3,282
Other-Network UC n/a 24,684 24,684
_______ ______ _____
102,275 118,009 220,284
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 2.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 9:13
Average session length (minutes:seconds) 14:06
Longest session recorded (minutes:seconds) 462:38
Average number of searches completed per session 3.9
Retrievals per search - median 10.0
Retrievals per search - average 977.6
Retrievals per search - standard deviation 8013.7
Percent of searches completed with 0 results 22.9%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 58.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 17,901 27.8%
DISPLAY (excluding automatic displays) 27,802 43.1%
BROWSE 144 0.2%
SELECT 34 0.1%
HELP 872 1.4%
EXPLAIN 1,104 1.7%
SET/RESET 1,549 2.4%
SHOW 223 0.3%
ADD ON (AND, OR, AND NOT) 2,338 3.6%
LOGON or LOGOFF 7,379 11.4%
COMMENT 0 0.0%
SAVE 3,130 4.9%
USE 7 0.0%
OTHER 2,186 3.4%
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 7,253 36.9% 1,463 20.2% 16 65.3 191.1
TITLE WORD 2,093 10.7% 575 27.5% 11 229.5 2259.9
EXACT TITLE 360 1.8% 137 38.1% 1 20.1 72.1
JOURNAL 474 2.4% 137 28.9% 452 3393.6 16982.2
EXACT JOURNAL 329 1.7% 90 27.4% 448 1483.4 2655.1
SUBJECT 1,966 10.0% 1,054 53.6% 911 5279.1 12876.3
EXACT SUBJECT 110 0.6% 41 37.3% 757 6031.5 15784.1
KEYWORD 5,368 27.3% 734 13.7% 53 2206.4 13005.2
FORM/PUB TYPE 63 0.3% 7 11.1% 79 1239.9 7370.0
DATE 910 4.6% 154 16.9% 5 119.1 1885.8
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 10 0.1% 2 20.0% 2,700 2849.1 2026.3
AUTHOR AFFIL. 18 0.1% 9 50.0% 28 224.0 609.1
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 33 0.2% 0 0.0% 187 648.0 1427.3
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 8 0.0% 8 100% 0 0.0 0.0
PERIODICAL 424 2.2% 99 23.3% 3 54.3 327.6
EXACT PE 98 0.5% 19 19.4% 2 7.5 17.3
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 131 0.7% 22 16.8% 110 2326.7 9604.4
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 1,921 10.9% 399 20.8% 6 284.2 3038.0
Single 15,730 89.1% 3,735 23.7% 37 1440.6 9473.2
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 140 97.2% 40 28.6% 2 5.7 12.4
EXACT SUBJECT 4 2.8% 4 100% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 90.7%
LONG 0.9%
TAGS 0.1%
FIELDS 1.2%
BROWSE REVIEW 0.3%
BROWSE LONG 0.1%
PERIODICALS 2.1%
COMMENTS 0.0%
Other 2.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.0%
Ten most frequent errors:
1. First word of command is invalid 31.6%
2. NS command - no next screen 30.0%
3. FIND command with invalid index name 8.4%
4. PS command - no previous screen 5.7%
5. DISPLAY command contains invalid word 4.7%
6. Valid command at an inappropriate time 2.6%
7. Search term missing from search command 2.2%
8. DISPLAY command-record numbers too large 1.4%
9. Add-on search, no index name after verb 1.2%
10. DISPLAY command - no FIND results 1.0%
11. All others 11.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 28.3%
2. GUIDE 18.9%
3. Unrecognized term 6.8%
4. FIND (PSY DB) 6.7%
5. COMMANDS (ABI/PSY DBS) 5.2%
6. ADDON SEARCH 3.2%
7. MAGS TEXT 2.8%
8. INDEXES (PSY DB) 2.8%
9. DISPLAY (INS/PSY DBS) 2.0%
10. FIND LOCATION 1.9%
11. All others 21.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.6%
2. First word of command is invalid 15.6%
3. DISPLAY command-first of >1 screen 8.8%
4. DISPLAY command - middle of >1 screen 8.2%
5. FIND command with invalid index name 6.3%
6. FIND command with zero results 6.3%
7. DISPLAY command-complete in one screen 4.9%
8. FIND command retrieves >1 book 4.5%
9. DISPLAY command - last of >1 screen 3.5%
10. NS command - no next screen 3.2%
11. All others 20.1%
Ten most frequent SHOW requests:
1. HISTORY 61.7%
2. SEARCH 22.4%
3. GLOSSARY 4.5%
4. MAIL STATUS 3.0%
5. SETTINGS (INS/PSY DBS) 2.5%
6. PUBLICATION TYPES (PSY DB) 1.5%
7. LIBRARY LOCATIONS 1.5%
8. UCB LIBRARY HOURS 1.0%
9. 0246 0.5%
10. DISPLAY (MED/INS/PSY DBS) 0.5%
11. All others 1.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)