MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 02/10/01 through 02/16/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 8 472 480
Davis 64 10 74
Irvine 138 0 138
Los Angeles 5 202 207
Riverside 7 6 13
San Diego 85 224 309
San Francisco 10 0 10
Santa Barbara 21 56 77
Santa Cruz 7 32 39
Lawrence Berkeley 0 74 74
Lawrence Livermore 0 64 64
Los Alamos 0 0 0
Other - UC 0 49 49
Other-Network UC n/a 410 410
_______ ______ _____
345 1,599 1,944
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,232 3,172 26,000
INS90 272 493 3,360
INS85 184 385 2,487
INS80 137 223 1,126
INS69 119 244 1,566
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 28 62 458
2-4 a.m. 45 117 1,355
4-6 a.m. 32 117 679
6-8 a.m. 67 124 803
8-10 a.m. 256 631 4,196
10-12 a.m. 326 751 6,841
12-2 p.m. 315 589 4,822
2-4 p.m. 336 775 5,993
4-6 p.m. 277 664 4,529
6-8 p.m. 138 375 2,346
8-10 p.m. 66 183 1,063
10-12 p.m. 58 129 1,454
__________ __________ __________ _________________
Total: 1,944 4,517 34,539
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 7 1,006 1,013
Davis 139 16 155
Irvine 427 0 427
Los Angeles 8 507 515
Riverside 19 8 27
San Diego 188 539 727
San Francisco 47 0 47
Santa Barbara 26 153 179
Santa Cruz 10 104 114
Lawrence Berkeley 0 166 166
Lawrence Livermore 0 342 342
Los Alamos 0 0 0
Other - UC 0 126 126
Other-Network UC n/a 679 679
_______ ______ _____
871 3,646 4,517
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 134 6,961 7,095
Davis 1,836 56 1,892
Irvine 6,063 0 6,063
Los Angeles 30 3,918 3,948
Riverside 76 63 139
San Diego 768 3,315 4,083
San Francisco 523 0 523
Santa Barbara 128 1,272 1,400
Santa Cruz 80 558 638
Lawrence Berkeley 0 1,156 1,156
Lawrence Livermore 0 2,422 2,422
Los Alamos 0 0 0
Other - UC 0 1,019 1,019
Other-Network UC n/a 4,161 4,161
_______ ______ _____
9,638 24,901 34,539
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 4.9
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) 7:17
Average session length (minutes:seconds) 11:39
Longest session recorded (minutes:seconds) 158:46
Average number of searches completed per session 2.3
Retrievals per search - median 7.0
Retrievals per search - average 864.2
Retrievals per search - standard deviation 16544
Percent of searches completed with 0 results 24.0%
Percent of searches entered that are long 4.3%
Percent of long searches completed
(includes partial results) 71.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,082 30.5%
DISPLAY (excluding automatic displays) 5,050 37.7%
BROWSE 4 0.0%
SELECT 2 0.0%
HELP 96 0.7%
EXPLAIN 164 1.2%
SET/RESET 1,091 8.1%
SHOW 32 0.2%
ADD ON (AND, OR, AND NOT) 434 3.2%
LOGON or LOGOFF 1,801 13.4%
COMMENT 0 0.0%
SAVE 134 1.0%
USE 5 0.0%
OTHER 503 3.8%
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 2,174 49.4% 421 19.4% 18 98.9 731.9
TITLE WORD 958 21.8% 365 38.1% 6 60.6 180.2
EXACT TITLE 39 0.9% 22 56.4% 2 44.5 127.6
JOURNAL 90 2.0% 35 38.9% 93 461.8 760.8
EXACT JOURNAL 15 0.3% 11 73.3% 4 792.3 1577.8
SUBJECT 148 3.4% 50 33.8% 38 1313.1 4978.3
EXACT SUBJECT 8 0.2% 0 0.0% 7 1997.6 5493.5
THESAURUS 4 0.1% 1 25.0% 27 3721.0 6410.3
EXACT THESAURUS 7 0.2% 4 57.1% 893 775.0 722.3
KEYWORD 651 14.8% 124 19.0% 40 3662.5 34090.5
SUBFILE 1 0.0% 0 0.0% 1 1.0 0.0
FORM 28 0.6% 5 17.9% 19 68.2 98.1
DATE 48 1.1% 16 33.3% 6 28.5 45.0
ADDED 14 0.3% 6 42.9% 23 24.3 19.2
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 72 1.6% 14 19.4% 26 173.6 697.4
CONFERENCE 8 0.2% 2 25.0% 51 367.0 592.8
LANGUAGE 2 0.0% 0 0.0% 19 19.0 25.5
CHEMICAL NAME 2 0.0% 0 0.0% 33 33.0 9.9
ISSN 2 0.0% 0 0.0% 2,007 2007.0 734.0
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 110 2.5% 17 15.5% 11 479.2 3843.3
EXACT PE 7 0.2% 1 14.3% 6 8.0 7.7
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 10 0.2% 8 80.0% 82 82.0 90.5
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 348 8.6% 110 31.6% 7 114.8 915.2
Single 3,693 91.4% 880 23.8% 19 830.5 14865.6
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 4 100% 1 25.0% 5 29.3 45.7
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.5%
SHORT 83.9%
LONG 3.5%
TAGS 0.1%
FIELDS 4.0%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 0.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.0%
Ten most frequent errors:
1. NS command - no next screen 46.8%
2. First word of command is invalid 26.1%
3. FIND command with invalid index name 4.8%
4. DISPLAY command contains invalid word 3.4%
5. Max. # of ports to a Z39 db are in use 2.7%
6. DISPLAY command - no FIND results 1.7%
7. PS command - no previous screen 1.3%
8. Search term missing from search command 1.3%
9. Add-on search, no index name after verb 1.1%
10. Valid command at an inappropriate time 1.1%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 19.5%
2. GUIDE (INSPEC DBS) 12.8%
3. INSPEC BACKFILES 11.0%
4. FIND (INSPEC DBS) 9.8%
5. LOCATE (INS/PSY DBS) 4.9%
6. INDEXES (INSPEC DBS) 4.9%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 4.3%
8. 1752 4.3%
9. MAIL 3.0%
10. Unrecognized term 3.0%
11. All others 22.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.9%
2. First word of command is invalid 14.2%
3. DISPLAY command-first of >1 screen 10.0%
4. NS command - no next screen 8.5%
5. FIND command with zero results 7.7%
6. DISPLAY command - middle of >1 screen 5.4%
7. FIND command retrieves >1 book 4.2%
8. DISPLAY command-complete in one screen 4.2%
9. FIND command with invalid index name 1.9%
10. DISPLAY command - last of >1 screen 1.5%
11. All others 15.4%
Ten most frequent SHOW requests:
1. HISTORY 46.9%
2. INSPEC LOADING STATISTICS 18.8%
3. INSPEC NEWS 15.6%
4. SEARCH 9.4%
5. I149 3.1%
6. SETTINGS (INS/PSY DBS) 3.1%
7. MAIL STATUS 3.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)