MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 12/02/00 through 12/08/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 198 333 531
Davis 171 10 181
Irvine 119 0 119
Los Angeles 59 138 197
Riverside 44 43 87
San Diego 14 79 93
San Francisco 78 0 78
Santa Barbara 7 46 53
Santa Cruz 22 30 52
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 54 55
Other-Network UC n/a 151 151
_______ ______ _____
713 884 1,597
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 27 148 1,300
2-4 a.m. 10 22 196
4-6 a.m. 6 20 194
6-8 a.m. 25 96 1,071
8-10 a.m. 152 574 3,985
10-12 a.m. 247 948 10,289
12-2 p.m. 261 1,191 12,538
2-4 p.m. 322 1,382 16,518
4-6 p.m. 248 1,066 14,351
6-8 p.m. 153 593 6,296
8-10 p.m. 94 451 4,074
10-12 p.m. 52 239 2,064
__________ __________ __________ _________________
Total: 1,597 6,730 72,876
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 849 1,646 2,495
Davis 644 16 660
Irvine 501 0 501
Los Angeles 369 544 913
Riverside 164 176 340
San Diego 41 212 253
San Francisco 309 0 309
Santa Barbara 64 301 365
Santa Cruz 105 67 172
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 216 217
Other-Network UC n/a 505 505
_______ ______ _____
3,047 3,683 6,730
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,369 22,410 32,779
Davis 4,763 64 4,827
Irvine 5,711 0 5,711
Los Angeles 3,600 6,224 9,824
Riverside 983 1,347 2,330
San Diego 110 1,945 2,055
San Francisco 2,482 0 2,482
Santa Barbara 1,477 1,431 2,908
Santa Cruz 618 798 1,416
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 2,794 2,796
Other-Network UC n/a 5,748 5,748
_______ ______ _____
30,115 42,761 72,876
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 1.4
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
_________________________________________
Median session length (minutes:seconds) 8:45
Average session length (minutes:seconds) 13:13
Longest session recorded (minutes:seconds) 202:05
Average number of searches completed per session 4.2
Retrievals per search - median 10.0
Retrievals per search - average 826.8
Retrievals per search - standard deviation 6888.8
Percent of searches completed with 0 results 24.3%
Percent of searches entered that are long 2.8%
Percent of long searches completed
(includes partial results) 64.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6,105 29.4%
DISPLAY (excluding automatic displays) 8,986 43.3%
BROWSE 14 0.1%
SELECT 1 0.0%
HELP 387 1.9%
EXPLAIN 414 2.0%
SET/RESET 407 2.0%
SHOW 77 0.4%
ADD ON (AND, OR, AND NOT) 625 3.0%
LOGON or LOGOFF 2,423 11.7%
COMMENT 0 0.0%
SAVE 665 3.2%
USE 3 0.0%
OTHER 659 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 2,407 35.7% 453 18.8% 16 79.1 225.5
TITLE WORD 741 11.0% 209 28.2% 6 171.7 1762.3
EXACT TITLE 79 1.2% 32 40.5% 1 18.8 55.5
JOURNAL 117 1.7% 38 32.5% 342 2424.8 5140.7
EXACT JOURNAL 73 1.1% 16 21.9% 755 1490.4 2572.3
SUBJECT 764 11.3% 416 54.4% 815 5366.9 10596.8
EXACT SUBJECT 23 0.3% 10 43.5% 1,020 2329.0 3546.1
KEYWORD 2,009 29.8% 358 17.8% 51 1636.3 10469.6
FORM/PUB TYPE 33 0.5% 3 9.1% 9 178.3 419.2
DATE 315 4.7% 30 9.5% 9 52.9 190.9
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. 2 0.0% 2 100% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 8 0.1% 2 25.0% 101 378.5 574.6
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 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 122 1.8% 34 27.9% 4 85.8 569.7
EXACT PE 8 0.1% 2 25.0% 3 6.5 9.3
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 42 0.6% 15 35.7% 58 177.4 344.4
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 670 11.1% 118 17.6% 7 54.8 210.4
Single 5,383 88.9% 1,381 25.7% 38 1273.2 7627.9
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 10 71.4% 7 70.0% 2 2.0 1.0
EXACT SUBJECT 4 28.6% 3 75.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.2%
SHORT 93.0%
LONG 0.8%
TAGS 0.0%
FIELDS 1.2%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 10.8%
Ten most frequent errors:
1. NS command - no next screen 31.3%
2. First word of command is invalid 30.4%
3. FIND command with invalid index name 10.9%
4. PS command - no previous screen 7.0%
5. DISPLAY command contains invalid word 4.4%
6. Valid command at an inappropriate time 2.7%
7. Search term missing from search command 2.3%
8. Add-on search, no index name after verb 1.0%
9. DISPLAY command - no FIND results 0.9%
10. NS of SHOW/EXP command-no next screen 0.8%
11. All others 8.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 30.0%
2. GUIDE 19.8%
3. FIND (PSY DB) 9.2%
4. COMMANDS (ABI/PSY DBS) 6.5%
5. Unrecognized term 5.8%
6. INDEXES (PSY DB) 5.3%
7. ADDON SEARCH 4.8%
8. MAIL 3.1%
9. FIND LOCATION 1.4%
10. MAGS TEXT 1.2%
11. All others 12.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.2%
2. First word of command is invalid 13.5%
3. DISPLAY command-first of >1 screen 10.0%
4. FIND command with invalid index name 8.4%
5. DISPLAY command - middle of >1 screen 7.7%
6. FIND command retrieves >1 book 6.4%
7. FIND command with zero results 6.2%
8. DISPLAY command-complete in one screen 4.9%
9. DISPLAY command - last of >1 screen 3.6%
10. NS command - no next screen 2.4%
11. All others 14.7%
Ten most frequent SHOW requests:
1. HISTORY 48.7%
2. MAIL STATUS 22.4%
3. SEARCH 19.7%
4. GLOSSARY 3.9%
5. PSYCINFO NEWS 2.6%
6. 0414 1.3%
7. 0416 1.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)