MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 10/01/00 through 10/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 380 1,142 1,522
Davis 560 21 581
Irvine 562 0 562
Los Angeles 345 625 970
Riverside 122 146 268
San Diego 76 509 585
San Francisco 306 0 306
Santa Barbara 93 277 370
Santa Cruz 136 208 344
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 5 160 165
Other-Network UC n/a 769 769
_______ ______ _____
2,585 3,857 6,442
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 85 426 4,227
2-4 a.m. 39 126 1,780
4-6 a.m. 35 294 1,551
6-8 a.m. 102 555 5,521
8-10 a.m. 631 2,381 19,327
10-12 a.m. 1,156 4,495 41,057
12-2 p.m. 1,241 4,707 54,728
2-4 p.m. 1,294 5,434 65,742
4-6 p.m. 944 3,387 37,682
6-8 p.m. 371 1,659 23,601
8-10 p.m. 343 1,459 15,780
10-12 p.m. 201 944 9,441
__________ __________ __________ _________________
Total: 6,442 25,867 280,437
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 1,652 4,770 6,422
Davis 1,948 50 1,998
Irvine 2,140 0 2,140
Los Angeles 1,277 2,390 3,667
Riverside 413 579 992
San Diego 344 2,087 2,431
San Francisco 1,412 0 1,412
Santa Barbara 311 1,257 1,568
Santa Cruz 614 809 1,423
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 15 648 663
Other-Network UC n/a 3,151 3,151
_______ ______ _____
10,126 15,741 25,867
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 19,661 54,130 73,791
Davis 18,128 390 18,518
Irvine 22,572 0 22,572
Los Angeles 18,143 27,449 45,592
Riverside 4,734 6,578 11,312
San Diego 1,246 36,446 37,692
San Francisco 10,095 0 10,095
Santa Barbara 2,063 13,814 15,877
Santa Cruz 4,389 7,300 11,689
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 41 7,753 7,794
Other-Network UC n/a 25,505 25,505
_______ ______ _____
101,072 179,365 280,437
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 1.1
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) 8:35
Average session length (minutes:seconds) 13:19
Longest session recorded (minutes:seconds) 367:04
Average number of searches completed per session 4.0
Retrievals per search - median 9.0
Retrievals per search - average 806.4
Retrievals per search - standard deviation 7173.1
Percent of searches completed with 0 results 23.1%
Percent of searches entered that are long 3.5%
Percent of long searches completed
(includes partial results) 62.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 23,091 29.0%
DISPLAY (excluding automatic displays) 33,962 42.6%
BROWSE 103 0.1%
SELECT 42 0.1%
HELP 1,071 1.3%
EXPLAIN 1,118 1.4%
SET/RESET 1,950 2.4%
SHOW 245 0.3%
ADD ON (AND, OR, AND NOT) 2,765 3.5%
LOGON or LOGOFF 9,347 11.7%
COMMENT 2 0.0%
SAVE 3,598 4.5%
USE 11 0.0%
OTHER 2,484 3.1%
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 10,134 39.6% 1,975 19.5% 15 60.2 176.3
TITLE WORD 3,315 13.0% 1,025 30.9% 8 99.1 579.3
EXACT TITLE 293 1.1% 133 45.4% 3 69.3 336.6
JOURNAL 613 2.4% 164 26.8% 452 2711.0 8426.6
EXACT JOURNAL 309 1.2% 91 29.4% 492 3485.1 20658.7
SUBJECT 2,349 9.2% 1,300 55.3% 652 5459.5 14695.5
EXACT SUBJECT 89 0.3% 40 44.9% 2,527 4735.7 7454.4
KEYWORD 6,479 25.3% 926 14.3% 51 1966.7 12613.4
FORM/PUB TYPE 95 0.4% 16 16.8% 26 339.3 769.8
DATE 1,094 4.3% 191 17.5% 4 38.9 199.5
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 7 0.0% 1 14.3% 261 20324.7 31082.5
AUTHOR AFFIL. 5 0.0% 3 60.0% 13 13.0 11.3
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 36 0.1% 7 19.4% 140 488.2 1094.2
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 2 0.0% 1 50.0% 1 1.0 0.0
PERIODICAL 596 2.3% 121 20.3% 3 158.6 1198.9
EXACT PE 53 0.2% 13 24.5% 2 5.5 10.2
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 118 0.5% 41 34.7% 15 578.4 2676.8
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 2,658 11.7% 632 23.8% 5 132.8 1931.9
Single 20,146 88.3% 4,741 23.5% 33 1256.7 9068.5
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 96 93.2% 35 36.5% 1 5.5 12.4
EXACT SUBJECT 7 6.8% 4 57.1% 18 18.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.4%
SHORT 90.2%
LONG 1.3%
TAGS 0.7%
FIELDS 1.5%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.6%
COMMENTS 0.0%
Other 2.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.0%
Ten most frequent errors:
1. NS command - no next screen 31.6%
2. First word of command is invalid 30.0%
3. FIND command with invalid index name 9.2%
4. PS command - no previous screen 5.3%
5. DISPLAY command contains invalid word 4.5%
6. Valid command at an inappropriate time 2.4%
7. NS of SHOW/EXP command-no next screen 2.0%
8. Search term missing from search command 2.0%
9. Add-on search, no index name after verb 1.2%
10. DISPLAY command - no FIND results 1.1%
11. All others 10.7%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 28.2%
2. GUIDE 22.9%
3. FIND (PSY DB) 8.2%
4. COMMANDS (ABI/PSY DBS) 5.5%
5. Unrecognized term 4.7%
6. DISPLAY (INS/PSY DBS) 2.7%
7. INDEXES (PSY DB) 2.7%
8. ADDON SEARCH 2.4%
9. SEARCH (PSY DB) 1.6%
10. MAIL 1.4%
11. All others 19.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.9%
2. First word of command is invalid 15.1%
3. DISPLAY command-first of >1 screen 7.8%
4. FIND command with invalid index name 7.7%
5. DISPLAY command - middle of >1 screen 6.4%
6. FIND command with zero results 6.0%
7. DISPLAY command-complete in one screen 4.4%
8. FIND command retrieves >1 book 3.7%
9. NS command - no next screen 3.4%
10. DISPLAY command - last of >1 screen 3.3%
11. All others 22.3%
Ten most frequent SHOW requests:
1. HISTORY 44.4%
2. SEARCH 33.3%
3. MAIL STATUS 6.4%
4. PSYCINFO NEWS 5.6%
5. GLOSSARY 3.0%
6. MAIL SETTINGS 2.1%
7. SETTINGS (INS/PSY DBS) 1.3%
8. SYSTEM NEWS 0.9%
9. PUBLICATION TYPES (PSY DB) 0.4%
10. FORM NAMES (PSY DB) 0.4%
11. All others 2.1%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)