MELVYL INSPEC DATABASES 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 6 508 514
Davis 48 1 49
Irvine 91 0 91
Los Angeles 16 237 253
Riverside 1 21 22
San Diego 56 115 171
San Francisco 10 0 10
Santa Barbara 17 77 94
Santa Cruz 5 15 20
Lawrence Berkeley 0 86 86
Lawrence Livermore 0 59 59
Los Alamos 0 0 0
Other - UC 1 42 43
Other-Network UC n/a 366 366
_______ ______ _____
251 1,527 1,778
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,159 2,819 22,427
INS90 219 421 1,973
INS85 151 255 1,384
INS80 117 230 1,223
INS69 132 325 1,919
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 41 101 995
2-4 a.m. 37 64 280
4-6 a.m. 36 95 478
6-8 a.m. 59 168 1,370
8-10 a.m. 174 369 2,485
10-12 a.m. 294 678 4,925
12-2 p.m. 265 572 4,902
2-4 p.m. 315 764 5,428
4-6 p.m. 296 624 3,827
6-8 p.m. 122 267 1,784
8-10 p.m. 83 200 1,198
10-12 p.m. 56 148 1,254
__________ __________ __________ _________________
Total: 1,778 4,050 28,926
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 12 1,045 1,057
Davis 154 2 156
Irvine 259 0 259
Los Angeles 22 550 572
Riverside 1 55 56
San Diego 138 326 464
San Francisco 15 0 15
Santa Barbara 35 214 249
Santa Cruz 16 25 41
Lawrence Berkeley 0 208 208
Lawrence Livermore 0 142 142
Los Alamos 0 0 0
Other - UC 2 88 90
Other-Network UC n/a 741 741
_______ ______ _____
654 3,396 4,050
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 35 6,433 6,468
Davis 2,202 2 2,204
Irvine 2,677 0 2,677
Los Angeles 496 4,039 4,535
Riverside 0 879 879
San Diego 551 2,368 2,919
San Francisco 178 0 178
Santa Barbara 50 2,109 2,159
Santa Cruz 135 127 262
Lawrence Berkeley 0 1,681 1,681
Lawrence Livermore 0 999 999
Los Alamos 0 0 0
Other - UC 0 629 629
Other-Network UC n/a 3,336 3,336
_______ ______ _____
6,324 22,602 28,926
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 4.7
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) 7:29
Average session length (minutes:seconds) 12:14
Longest session recorded (minutes:seconds) 266:34
Average number of searches completed per session 2.2
Retrievals per search - median 5.0
Retrievals per search - average 400.3
Retrievals per search - standard deviation 8655.4
Percent of searches completed with 0 results 29.2%
Percent of searches entered that are long 6.1%
Percent of long searches completed
(includes partial results) 77.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,706 31.5%
DISPLAY (excluding automatic displays) 4,193 35.7%
BROWSE 33 0.3%
SELECT 0 0.0%
HELP 95 0.8%
EXPLAIN 148 1.3%
SET/RESET 1,037 8.8%
SHOW 38 0.3%
ADD ON (AND, OR, AND NOT) 344 2.9%
LOGON or LOGOFF 1,551 13.2%
COMMENT 0 0.0%
SAVE 165 1.4%
USE 5 0.0%
OTHER 476 4.0%
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 1,719 43.2% 457 26.6% 16 78.0 280.2
TITLE WORD 782 19.6% 388 49.6% 6 162.5 1050.4
EXACT TITLE 13 0.3% 11 84.6% 1 1.0 0.0
JOURNAL 120 3.0% 54 45.0% 120 1318.2 3408.3
EXACT JOURNAL 24 0.6% 8 33.3% 99 2464.7 7792.5
SUBJECT 168 4.2% 40 23.8% 15 161.1 510.1
EXACT SUBJECT 12 0.3% 3 25.0% 32 2554.8 5076.3
THESAURUS 1 0.0% 0 0.0% 10,774 10774.0 0.0
EXACT THESAURUS 2 0.1% 0 0.0% 1,835 1835.0 1391.6
KEYWORD 919 23.1% 206 22.4% 25 1722.7 20337.4
SUBFILE 3 0.1% 0 0.0% 44 40.7 5.8
FORM 3 0.1% 0 0.0% 25 36.7 39.8
DATE 47 1.2% 14 29.8% 23 512.8 1273.8
ADDED 4 0.1% 2 50.0% 23 22.5 27.6
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 24 0.6% 6 25.0% 10 37.6 59.1
CONFERENCE 4 0.1% 3 75.0% 1 1.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 8 0.2% 4 50.0% 75 132.0 168.3
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 113 2.8% 32 28.3% 10 26.7 62.7
EXACT PE 9 0.2% 2 22.2% 4 4.3 3.4
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 7 0.2% 0 0.0% 5 9.6 9.3
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 321 8.8% 140 43.6% 7 170.0 977.5
Single 3,334 91.2% 948 28.4% 18 643.0 11181.4
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 33 100% 10 30.3% 7 12.6 16.5
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.3%
SHORT 84.1%
LONG 1.9%
TAGS 0.2%
FIELDS 4.9%
BROWSE REVIEW 0.4%
BROWSE LONG 0.0%
PERIODICALS 3.7%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.5%
Ten most frequent errors:
1. NS command - no next screen 39.6%
2. First word of command is invalid 35.2%
3. FIND command with invalid index name 5.0%
4. DISPLAY command contains invalid word 3.0%
5. PS command - no previous screen 1.5%
6. Search term missing from search command 1.5%
7. NS of SHOW/EXP command-no next screen 1.3%
8. Index invalid in current database 1.2%
9. Max. # of ports to a Z39 db are in use 1.2%
10. Add-on search, no index name after verb 1.1%
11. All others 9.4%
Ten most frequent EXPLAIN requests:
1. GUIDE (INSPEC DBS) 17.6%
2. FIND (INSPEC DBS) 13.5%
3. INSPEC DATABASES 11.5%
4. LOCATE (INS/PSY DBS) 6.1%
5. COMMANDS (INS/PSY/ABI/BIO DBS) 4.7%
6. INDEXES (INSPEC DBS) 4.7%
7. DATABASES 4.7%
8. DISPLAY (INS/PSY DBS) 4.1%
9. ADDON SEARCH 4.1%
10. 1752 3.4%
11. All others 25.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.7%
2. First word of command is invalid 15.6%
3. FIND command retrieves >1 book 7.4%
4. FIND command with zero results 6.6%
5. DISPLAY command-first of >1 screen 5.8%
6. DISPLAY command - middle of >1 screen 4.5%
7. NS command - no next screen 4.1%
8. FIND command with invalid index name 4.1%
9. Multi-index search with zero results 3.3%
10. DISPLAY command-complete in one screen 2.9%
11. All others 18.9%
Ten most frequent SHOW requests:
1. HISTORY 57.9%
2. MAIL STATUS 21.1%
3. INSPEC LOADING STATISTICS 10.5%
4. SEARCH 5.3%
5. SETTINGS (INS/PSY DBS) 2.6%
6. GLOSSARY 2.6%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)