MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 05/19/01 through 05/25/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 5 304 309
Davis 97 3 100
Irvine 104 0 104
Los Angeles 2 105 107
Riverside 23 8 31
San Diego 42 144 186
San Francisco 18 0 18
Santa Barbara 8 53 61
Santa Cruz 2 16 18
Lawrence Berkeley 0 44 44
Lawrence Livermore 0 37 37
Los Alamos 0 0 0
Other - UC 0 50 50
Other-Network UC n/a 326 326
_______ ______ _____
301 1,090 1,391
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 867 2,038 17,474
INS90 183 327 1,715
INS85 134 221 1,683
INS80 106 172 607
INS69 101 182 987
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 36 77 604
2-4 a.m. 23 81 408
4-6 a.m. 19 43 294
6-8 a.m. 36 67 883
8-10 a.m. 155 274 1,635
10-12 a.m. 269 541 3,962
12-2 p.m. 191 438 3,377
2-4 p.m. 231 467 4,550
4-6 p.m. 219 458 3,130
6-8 p.m. 87 214 1,137
8-10 p.m. 82 159 1,365
10-12 p.m. 43 121 1,121
__________ __________ __________ _________________
Total: 1,391 2,940 22,466
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 12 641 653
Davis 231 11 242
Irvine 253 0 253
Los Angeles 4 225 229
Riverside 33 22 55
San Diego 83 336 419
San Francisco 74 0 74
Santa Barbara 17 93 110
Santa Cruz 7 44 51
Lawrence Berkeley 0 72 72
Lawrence Livermore 0 87 87
Los Alamos 0 0 0
Other - UC 0 92 92
Other-Network UC n/a 603 603
_______ ______ _____
714 2,226 2,940
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 150 7,594 7,744
Davis 1,310 60 1,370
Irvine 3,137 0 3,137
Los Angeles 15 1,201 1,216
Riverside 249 40 289
San Diego 186 1,922 2,108
San Francisco 499 0 499
Santa Barbara 35 876 911
Santa Cruz 2 596 598
Lawrence Berkeley 0 846 846
Lawrence Livermore 0 326 326
Los Alamos 0 0 0
Other - UC 0 931 931
Other-Network UC n/a 2,491 2,491
_______ ______ _____
5,583 16,883 22,466
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 3.5
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
_________________________________________
Median session length (minutes:seconds) 7:27
Average session length (minutes:seconds) 11:43
Longest session recorded (minutes:seconds) 141:26
Average number of searches completed per session 2.1
Retrievals per search - median 6.0
Retrievals per search - average 246.4
Retrievals per search - standard deviation 1740.2
Percent of searches completed with 0 results 25.8%
Percent of searches entered that are long 5.5%
Percent of long searches completed
(includes partial results) 83.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,700 30.5%
DISPLAY (excluding automatic displays) 3,288 37.2%
BROWSE 3 0.0%
SELECT 0 0.0%
HELP 47 0.5%
EXPLAIN 81 0.9%
SET/RESET 854 9.7%
SHOW 31 0.4%
ADD ON (AND, OR, AND NOT) 240 2.7%
LOGON or LOGOFF 1,163 13.2%
COMMENT 0 0.0%
SAVE 100 1.1%
USE 3 0.0%
OTHER 334 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 1,352 44.8% 294 21.7% 15 108.5 526.4
TITLE WORD 709 23.5% 279 39.3% 6 165.3 730.3
EXACT TITLE 29 1.0% 11 37.9% 2 12.6 36.2
JOURNAL 82 2.7% 16 19.5% 30 2009.0 7151.5
EXACT JOURNAL 15 0.5% 3 20.0% 572 1000.6 1281.0
SUBJECT 62 2.1% 19 30.6% 391 531.3 873.2
EXACT SUBJECT 14 0.5% 3 21.4% 10 19.9 27.8
THESAURUS 2 0.1% 0 0.0% 663 663.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 502 16.6% 90 17.9% 31 787.0 3247.3
SUBFILE 17 0.6% 8 47.1% 10 13.1 9.8
FORM 12 0.4% 1 8.3% 29 169.8 296.2
DATE 90 3.0% 10 11.1% 49 424.3 676.5
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. 32 1.1% 5 15.6% 18 525.7 1648.3
CONFERENCE 4 0.1% 0 0.0% 18 50.8 75.1
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 4 0.1% 1 25.0% 8 15.0 17.6
ISSN 1 0.0% 1 100% 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 82 2.7% 24 29.3% 5 169.9 598.2
EXACT PE 8 0.3% 0 0.0% 3 9.3 15.8
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 4 0.1% 2 50.0% 25 25.0 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 336 12.5% 101 30.1% 7 167.6 452.7
Single 2,344 87.5% 564 24.1% 19 371.3 2198.5
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 3 100% 1 33.3% 2 1.5 0.7
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 86.2%
LONG 2.6%
TAGS 0.1%
FIELDS 3.8%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 3.4%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 46.5%
2. First word of command is invalid 23.8%
3. FIND command with invalid index name 6.5%
4. Max. # of ports to a Z39 db are in use 3.7%
5. PS command - no previous screen 3.3%
6. DISPLAY command contains invalid word 2.6%
7. Valid command at an inappropriate time 1.7%
8. Search term missing from search command 1.3%
9. 177 0.8%
10. NS of SHOW/EXP command-no next screen 0.7%
11. All others 9.1%
Ten most frequent EXPLAIN requests:
1. INSPEC BACKFILES 23.5%
2. INSPEC DATABASES 13.6%
3. FIND (INSPEC DBS) 12.3%
4. GUIDE (INSPEC DBS) 11.1%
5. LOCATE (INS/PSY DBS) 4.9%
6. I038 3.7%
7. INDEXES (INSPEC DBS) 3.7%
8. MAIL 2.5%
9. I042 2.5%
10. 1217 2.5%
11. All others 19.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.0%
2. First word of command is invalid 12.5%
3. DISPLAY command - middle of >1 screen 10.2%
4. FIND command with zero results 7.0%
5. DISPLAY command - last of >1 screen 6.3%
6. NS command - no next screen 3.9%
7. FIND command with invalid index name 3.9%
8. FIND command retrieves >1 book 3.9%
9. DISPLAY command-complete in one screen 3.9%
10. DISPLAY command-first of >1 screen 3.9%
11. All others 19.5%
Ten most frequent SHOW requests:
1. HISTORY 60.0%
2. INSPEC NEWS 10.0%
3. SEARCH 10.0%
4. DISPLAY (MED/INS/PSY DBS) 6.7%
5. FIND DISPLAY 6.7%
6. INSPEC LOADING STATISTICS 3.3%
7. SYSTEM NEWS 3.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)