MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 03/24/01 through 03/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 6 287 293
Davis 47 0 47
Irvine 74 0 74
Los Angeles 4 104 108
Riverside 2 12 14
San Diego 58 160 218
San Francisco 11 0 11
Santa Barbara 0 65 65
Santa Cruz 4 38 42
Lawrence Berkeley 0 58 58
Lawrence Livermore 0 67 67
Los Alamos 0 0 0
Other - UC 4 59 63
Other-Network UC n/a 351 351
_______ ______ _____
210 1,201 1,411
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 922 2,200 18,313
INS90 200 363 2,906
INS85 105 193 1,117
INS80 88 140 564
INS69 96 205 963
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 23 72 759
2-4 a.m. 21 96 895
4-6 a.m. 36 115 727
6-8 a.m. 59 150 998
8-10 a.m. 193 404 3,062
10-12 a.m. 205 470 2,830
12-2 p.m. 197 438 4,169
2-4 p.m. 279 505 3,339
4-6 p.m. 203 397 2,692
6-8 p.m. 104 243 1,868
8-10 p.m. 36 90 475
10-12 p.m. 55 121 2,049
__________ __________ __________ _________________
Total: 1,411 3,101 23,863
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 7 622 629
Davis 95 0 95
Irvine 192 0 192
Los Angeles 8 265 273
Riverside 1 63 64
San Diego 139 293 432
San Francisco 21 0 21
Santa Barbara 0 169 169
Santa Cruz 19 68 87
Lawrence Berkeley 0 144 144
Lawrence Livermore 0 185 185
Los Alamos 0 0 0
Other - UC 7 127 134
Other-Network UC n/a 676 676
_______ ______ _____
489 2,612 3,101
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 21 4,288 4,309
Davis 616 0 616
Irvine 1,659 0 1,659
Los Angeles 4 2,072 2,076
Riverside 1 325 326
San Diego 549 2,231 2,780
San Francisco 122 0 122
Santa Barbara 0 1,184 1,184
Santa Cruz 130 538 668
Lawrence Berkeley 0 1,385 1,385
Lawrence Livermore 0 2,258 2,258
Los Alamos 0 0 0
Other - UC 38 605 643
Other-Network UC n/a 5,837 5,837
_______ ______ _____
3,140 20,723 23,863
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 5.3
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) 8:17
Average session length (minutes:seconds) 11:51
Longest session recorded (minutes:seconds) 506:47
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 1287.2
Retrievals per search - standard deviation 20512
Percent of searches completed with 0 results 27.4%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 72.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,841 31.4%
DISPLAY (excluding automatic displays) 3,230 35.7%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 49 0.5%
EXPLAIN 99 1.1%
SET/RESET 803 8.9%
SHOW 24 0.3%
ADD ON (AND, OR, AND NOT) 260 2.9%
LOGON or LOGOFF 1,282 14.2%
COMMENT 0 0.0%
SAVE 74 0.8%
USE 7 0.1%
OTHER 370 4.1%
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 1,430 45.7% 356 24.9% 16 80.6 322.3
TITLE WORD 608 19.4% 264 43.4% 5 64.5 253.4
EXACT TITLE 19 0.6% 11 57.9% 2 1.6 0.7
JOURNAL 99 3.2% 39 39.4% 125 2965.4 12393.1
EXACT JOURNAL 31 1.0% 7 22.6% 61 4055.8 7923.4
SUBJECT 33 1.1% 5 15.2% 20 81.2 118.6
EXACT SUBJECT 10 0.3% 2 20.0% 128 2157.0 5586.9
THESAURUS 5 0.2% 2 40.0% 20 3795.7 6550.0
EXACT THESAURUS 3 0.1% 0 0.0% 1,040 1288.7 430.7
KEYWORD 600 19.2% 116 19.3% 23 3884.8 36262.1
SUBFILE 2 0.1% 1 50.0% 12 12.0 0.0
FORM 19 0.6% 4 21.1% 39 103.5 256.8
DATE 47 1.5% 9 19.1% 11 40.3 96.1
ADDED 11 0.4% 6 54.5% 8 11.0 6.6
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 64 2.0% 16 25.0% 25 196.4 664.7
CONFERENCE 10 0.3% 7 70.0% 1,079 1768.0 2122.1
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 18 0.6% 10 55.6% 24 373.1 826.4
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 117 3.7% 21 17.9% 5 1229.1 11833.0
EXACT PE 3 0.1% 1 33.3% 3 3.0 2.8
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 2 0.1% 0 0.0% 85 84.5 87.0
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 310 11.0% 100 32.3% 6 86.4 787.3
Single 2,503 89.0% 676 27.0% 18 1314.5 19075.8
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 3.7%
SHORT 83.5%
LONG 2.6%
TAGS 0.3%
FIELDS 3.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.6%
COMMENTS 0.0%
Other 0.9%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 8.9%
Ten most frequent errors:
1. NS command - no next screen 45.6%
2. First word of command is invalid 27.4%
3. FIND command with invalid index name 5.7%
4. DISPLAY command contains invalid word 2.9%
5. Max. # of ports to a Z39 db are in use 2.3%
6. Search term missing from search command 2.0%
7. NS of SHOW/EXP command-no next screen 1.5%
8. PS command - no previous screen 1.4%
9. DISPLAY command-record numbers too large 0.9%
10. Valid command at an inappropriate time 0.8%
11. All others 9.5%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 19.2%
2. INSPEC DATABASES 15.2%
3. INSPEC BACKFILES 8.1%
4. Unrecognized term 8.1%
5. INDEXES (INSPEC DBS) 7.1%
6. 1752 6.1%
7. LOCATE (INS/PSY DBS) 5.1%
8. GUIDE (INSPEC DBS) 5.1%
9. MAIL 3.0%
10. DATABASES 3.0%
11. All others 20.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.7%
2. First word of command is invalid 9.5%
3. DISPLAY command - middle of >1 screen 7.4%
4. FIND command with zero results 5.4%
5. DISPLAY command-first of >1 screen 5.4%
6. DISPLAY command-complete in one screen 4.1%
7. PE display complete in one screen 4.1%
8. FIND command retrieves >1 book 3.4%
9. Multi-index search with zero results 3.4%
10. SET DB command entered w/o modifier 2.7%
11. All others 25.0%
Ten most frequent SHOW requests:
1. HISTORY 50.0%
2. INSPEC NEWS 16.7%
3. SYSTEM NEWS 12.5%
4. GLOSSARY 8.3%
5. INSPEC LOADING STATISTICS 4.2%
6. SEARCH 4.2%
7. UPDATE 4.2%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)