MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 04/28/01 through 05/04/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 7 381 388
Davis 46 2 48
Irvine 197 0 197
Los Angeles 0 121 121
Riverside 5 4 9
San Diego 77 179 256
San Francisco 27 0 27
Santa Barbara 18 77 95
Santa Cruz 6 21 27
Lawrence Berkeley 0 69 69
Lawrence Livermore 0 47 47
Los Alamos 0 0 0
Other - UC 1 81 82
Other-Network UC n/a 408 408
_______ ______ _____
384 1,390 1,774
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,086 5,620 37,707
INS90 282 572 4,755
INS85 159 278 2,072
INS80 128 233 1,141
INS69 119 238 1,805
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 47 97 1,187
2-4 a.m. 24 74 416
4-6 a.m. 11 23 231
6-8 a.m. 55 154 908
8-10 a.m. 205 2,034 12,116
10-12 a.m. 332 651 3,940
12-2 p.m. 255 609 5,616
2-4 p.m. 288 942 7,047
4-6 p.m. 289 1,056 5,991
6-8 p.m. 106 268 1,549
8-10 p.m. 97 485 2,286
10-12 p.m. 65 548 6,193
__________ __________ __________ _________________
Total: 1,774 6,941 47,480
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 17 778 795
Davis 107 6 113
Irvine 3,532 0 3,532
Los Angeles 0 278 278
Riverside 4 5 9
San Diego 161 435 596
San Francisco 99 0 99
Santa Barbara 35 162 197
Santa Cruz 15 61 76
Lawrence Berkeley 0 159 159
Lawrence Livermore 0 123 123
Los Alamos 0 0 0
Other - UC 1 116 117
Other-Network UC n/a 847 847
_______ ______ _____
3,971 2,970 6,941
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 31 8,103 8,134
Davis 947 12 959
Irvine 19,191 0 19,191
Los Angeles 0 2,217 2,217
Riverside 2 8 10
San Diego 1,181 3,270 4,451
San Francisco 1,354 0 1,354
Santa Barbara 334 1,971 2,305
Santa Cruz 216 540 756
Lawrence Berkeley 0 1,761 1,761
Lawrence Livermore 0 691 691
Los Alamos 0 0 0
Other - UC 11 1,385 1,396
Other-Network UC n/a 4,255 4,255
_______ ______ _____
23,267 24,213 47,480
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 4.1
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 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 7:35
Average session length (minutes:seconds) 12:10
Longest session recorded (minutes:seconds) 381:01
Average number of searches completed per session 3.9
Retrievals per search - median 1.0
Retrievals per search - average 963.5
Retrievals per search - standard deviation 16938
Percent of searches completed with 0 results 36.1%
Percent of searches entered that are long 3.2%
Percent of long searches completed
(includes partial results) 74.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6,646 42.0%
DISPLAY (excluding automatic displays) 5,176 32.7%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 96 0.6%
EXPLAIN 165 1.0%
SET/RESET 1,133 7.2%
SHOW 22 0.1%
ADD ON (AND, OR, AND NOT) 295 1.9%
LOGON or LOGOFF 1,615 10.2%
COMMENT 0 0.0%
SAVE 223 1.4%
USE 6 0.0%
OTHER 432 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 1,727 24.3% 436 25.2% 14 84.9 375.7
TITLE WORD 3,710 52.2% 1,730 46.6% 1 17.0 87.0
EXACT TITLE 385 5.4% 161 41.8% 1 4.0 22.2
JOURNAL 86 1.2% 37 43.0% 12 4906.0 19732.0
EXACT JOURNAL 29 0.4% 14 48.3% 11 439.9 573.0
SUBJECT 94 1.3% 20 21.3% 49 280.8 776.4
EXACT SUBJECT 6 0.1% 0 0.0% 243 3699.7 6481.1
THESAURUS 3 0.0% 0 0.0% 20 3844.3 6636.9
EXACT THESAURUS 1 0.0% 0 0.0% 470 470.0 0.0
KEYWORD 690 9.7% 106 15.4% 23 3748.4 34486.7
SUBFILE 5 0.1% 0 0.0% 94 81.0 46.5
FORM 24 0.3% 3 12.5% 19 248.5 795.1
DATE 55 0.8% 18 32.7% 12 81.1 255.9
ADDED 12 0.2% 6 50.0% 13 11.8 6.8
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 129 1.8% 16 12.4% 40 21546.3 70389.6
CONFERENCE 12 0.2% 5 41.7% 613 1432.0 1827.6
LANGUAGE 2 0.0% 0 0.0% 1 1.0 0.0
CHEMICAL NAME 15 0.2% 3 20.0% 30 266.7 624.8
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 2 0.0% 0 0.0% 47 46.5 12.0
ID NUMBER 6 0.1% 1 16.7% 1 1.0 0.0
PERIODICAL 95 1.3% 13 13.7% 13 87.6 274.1
EXACT PE 13 0.2% 1 7.7% 4 89.2 295.4
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 2 0.0% 1 50.0% 17 17.0 0.0
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 491 7.5% 157 32.0% 4 71.2 666.4
Single 6,097 92.5% 2,255 37.0% 3 1314.9 18556.7
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:
THESAURUS 1 100% 0 0.0% 1 1.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.2%
SHORT 71.4%
LONG 1.6%
TAGS 19.0%
FIELDS 3.1%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.4%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. NS command - no next screen 31.7%
2. Search term missing from search command 24.9%
3. First word of command is invalid 19.4%
4. FIND command with invalid index name 4.5%
5. Max. # of ports to a Z39 db are in use 2.4%
6. DISPLAY command contains invalid word 2.2%
7. DISPLAY command - no FIND results 2.0%
8. PS command - no previous screen 2.0%
9. Valid command at an inappropriate time 1.4%
10. DISPLAY command-record numbers too large 1.1%
11. All others 8.3%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 12.7%
2. LOCATE (INS/PSY DBS) 10.3%
3. INSPEC DATABASES 7.9%
4. INDEXES (INSPEC DBS) 7.9%
5. GUIDE (INSPEC DBS) 6.7%
6. I064 6.1%
7. MAIL 5.5%
8. INSPEC BACKFILES 4.8%
9. Unrecognized term 3.6%
10. COMMANDS (INS/PSY/ABI/BIO DBS) 3.0%
11. All others 31.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.5%
2. First word of command is invalid 16.1%
3. DISPLAY command-first of >1 screen 7.3%
4. FIND command with zero results 6.5%
5. FIND command with invalid index name 5.4%
6. DISPLAY command-complete in one screen 4.6%
7. FIND command retrieves >1 book 3.8%
8. DISPLAY command - middle of >1 screen 3.8%
9. FIND command retrieves 1 book 3.4%
10. DISPLAY command - last of >1 screen 2.7%
11. All others 26.8%
Ten most frequent SHOW requests:
1. HISTORY 59.1%
2. SETTINGS (INS/PSY DBS) 22.7%
3. INSPEC NEWS 4.5%
4. GLOSSARY 4.5%
5. MODE 4.5%
6. MAIL STATUS 4.5%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)