MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 12/29/01 through 01/04/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2 152 154
Davis 76 1 77
Irvine 24 0 24
Los Angeles 0 69 69
Riverside 1 5 6
San Diego 54 129 183
San Francisco 4 0 4
Santa Barbara 2 41 43
Santa Cruz 2 4 6
Lawrence Berkeley 0 19 19
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 14 5 19
Other-Network UC n/a 214 214
_______ ______ _____
179 644 823
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 457 1,023 9,505
INS90 146 321 1,379
INS85 92 140 405
INS80 75 111 393
INS69 53 123 660
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 10 27 156
2-4 a.m. 6 7 50
4-6 a.m. 19 33 307
6-8 a.m. 20 54 440
8-10 a.m. 100 177 1,285
10-12 a.m. 157 302 1,512
12-2 p.m. 88 198 1,407
2-4 p.m. 167 325 3,184
4-6 p.m. 134 318 2,232
6-8 p.m. 48 119 831
8-10 p.m. 56 115 756
10-12 p.m. 18 43 182
__________ __________ __________ _________________
Total: 823 1,718 12,342
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 1 414 415
Davis 221 1 222
Irvine 68 0 68
Los Angeles 0 118 118
Riverside 0 16 16
San Diego 134 237 371
San Francisco 13 0 13
Santa Barbara 5 81 86
Santa Cruz 4 10 14
Lawrence Berkeley 0 32 32
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 0 18 18
Other-Network UC n/a 336 336
_______ ______ _____
446 1,272 1,718
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 3,317 3,321
Davis 1,286 3 1,289
Irvine 427 0 427
Los Angeles 0 1,572 1,572
Riverside 0 38 38
San Diego 1,199 1,631 2,830
San Francisco 56 0 56
Santa Barbara 3 726 729
Santa Cruz 139 48 187
Lawrence Berkeley 0 271 271
Lawrence Livermore 0 123 123
Los Alamos 0 0 0
Other - UC 0 245 245
Other-Network UC n/a 1,254 1,254
_______ ______ _____
3,114 9,228 12,342
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 1.6
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) 8:14
Average session length (minutes:seconds) 15:00
Longest session recorded (minutes:seconds) 749:11
Average number of searches completed per session 2.1
Retrievals per search - median 4.0
Retrievals per search - average 153.3
Retrievals per search - standard deviation 1372.0
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 8.0%
Percent of long searches completed
(includes partial results) 87.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,595 31.1%
DISPLAY (excluding automatic displays) 1,899 37.0%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 27 0.5%
EXPLAIN 55 1.1%
SET/RESET 545 10.6%
SHOW 12 0.2%
ADD ON (AND, OR, AND NOT) 123 2.4%
LOGON or LOGOFF 601 11.7%
COMMENT 0 0.0%
SAVE 81 1.6%
USE 0 0.0%
OTHER 194 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 908 50.0% 216 23.8% 11 82.1 420.5
TITLE WORD 301 16.6% 124 41.2% 5 84.7 421.3
EXACT TITLE 13 0.7% 7 53.8% 4 11.8 21.7
JOURNAL 87 4.8% 33 37.9% 13 1304.9 5840.3
EXACT JOURNAL 7 0.4% 3 42.9% 76 240.0 384.6
SUBJECT 118 6.5% 20 16.9% 8 120.2 394.9
EXACT SUBJECT 5 0.3% 0 0.0% 49 320.0 628.3
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 220 12.1% 49 22.3% 30 594.4 2543.2
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 9 0.5% 0 0.0% 4 44.0 96.5
DATE 26 1.4% 6 23.1% 33 160.0 247.3
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. 48 2.6% 20 41.7% 7 13.6 24.9
CONFERENCE 10 0.6% 3 30.0% 15 52.3 76.4
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 7 0.4% 3 42.9% 3 19.0 34.0
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 54 3.0% 11 20.4% 4 107.8 431.9
EXACT PE 1 0.1% 0 0.0% 15 15.0 0.0
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 3 0.2% 0 0.0% 99 81.0 44.8
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 232 14.7% 71 30.6% 4 49.4 212.5
Single 1,347 85.3% 352 26.1% 14 250.6 1784.5
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:
THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 87.9%
LONG 2.5%
TAGS 0.3%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.7%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.1%
Ten most frequent errors:
1. NS command - no next screen 50.2%
2. First word of command is invalid 25.7%
3. FIND command with invalid index name 3.8%
4. Valid command at an inappropriate time 2.7%
5. DISPLAY command contains invalid word 2.7%
6. 1281 2.0%
7. Invalid SET DB INS command issued 1.5%
8. PS command - no previous screen 1.3%
9. DISPLAY command-record numbers too large 1.1%
10. DISPLAY command - no FIND results 0.9%
11. All others 8.2%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 25.5%
2. FIND (INSPEC DBS) 10.9%
3. INDEXES (INSPEC DBS) 9.1%
4. LOCATE (INS/PSY DBS) 7.3%
5. Unrecognized term 7.3%
6. GUIDE (INSPEC DBS) 5.5%
7. INSPEC BACKFILES 5.5%
8. FIND (INSPEC DBS) 5.5%
9. MAIL 3.6%
10. COMMANDS (INS/PSY/ABI/BIO DBS) 3.6%
11. All others 16.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.8%
2. NS command - no next screen 11.0%
3. First word of command is invalid 8.5%
4. FIND command retrieves >1 book 8.5%
5. DISPLAY command-complete in one screen 8.5%
6. FIND command with zero results 6.1%
7. 3 HELP commands issued from same code 4.9%
8. Multi-index search with zero results 4.9%
9. DISPLAY command - middle of >1 screen 2.4%
10. DISPLAY command - last of >1 screen 2.4%
11. All others 15.9%
Ten most frequent SHOW requests:
1. HISTORY 83.3%
2. INSPEC NEWS 8.3%
3. INSPEC LOADING STATISTICS 8.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)