MELVYL ABI DATABASE TELNET STATISTICS
Time period: 02/01/99 through 02/28/99
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 166 1,123 1,289
Davis 298 11 309
Irvine 373 0 373
Los Angeles 40 552 592
Riverside 328 7 335
San Diego 46 103 149
San Francisco 76 3 79
Santa Barbara 123 41 164
Santa Cruz 189 81 270
Lawrence Berkeley 0 5 5
Lawrence Livermore 0 17 17
Los Alamos 0 0 0
Other - UC 16 19 35
Other-Network UC n/a 533 533
_______ ______ _____
1,655 2,495 4,150
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 62 202 4,161
2-4 a.m. 33 147 3,344
4-6 a.m. 19 81 1,230
6-8 a.m. 56 164 3,210
8-10 a.m. 284 890 10,392
10-12 a.m. 679 2,052 30,808
12-2 p.m. 792 2,824 35,726
2-4 p.m. 954 3,203 48,960
4-6 p.m. 621 2,267 34,239
6-8 p.m. 260 1,043 15,746
8-10 p.m. 265 1,024 31,953
10-12 p.m. 125 481 9,048
__________ __________ __________ _________________
Total: 4,150 14,378 228,817
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 479 4,056 4,535
Davis 1,092 40 1,132
Irvine 1,112 0 1,112
Los Angeles 128 2,295 2,423
Riverside 1,367 19 1,386
San Diego 126 324 450
San Francisco 277 2 279
Santa Barbara 505 117 622
Santa Cruz 654 181 835
Lawrence Berkeley 0 10 10
Lawrence Livermore 0 72 72
Los Alamos 0 0 0
Other - UC 47 90 137
Other-Network UC n/a 1,385 1,385
_______ ______ _____
5,787 8,591 14,378
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,097 85,683 90,780
Davis 13,528 514 14,042
Irvine 14,692 0 14,692
Los Angeles 2,880 38,878 41,758
Riverside 13,274 359 13,633
San Diego 1,066 5,349 6,415
San Francisco 3,585 84 3,669
Santa Barbara 4,649 1,448 6,097
Santa Cruz 7,045 2,634 9,679
Lawrence Berkeley 0 580 580
Lawrence Livermore 0 1,830 1,830
Los Alamos 0 0 0
Other - UC 373 1,229 1,602
Other-Network UC n/a 24,040 24,040
_______ ______ _____
66,189 162,628 228,817
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 2.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.4
2.0 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 11:02
Average session length (minutes:seconds) 16:39
Longest session recorded (minutes:seconds) 803:27
Average number of searches completed per session 3.4
Retrievals per search - median 8.0
Retrievals per search - average 1270.5
Retrievals per search - standard deviation 11453
Percent of searches completed with 0 results 28.0%
Percent of searches entered that are long 1.6%
Percent of long searches completed
(includes partial results) 59.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 12,849 23.6%
DISPLAY (excluding automatic displays) 27,450 50.4%
BROWSE 70 0.1%
SELECT 12 0.0%
HELP 1,034 1.9%
EXPLAIN 978 1.8%
SET/RESET 1,703 3.1%
SHOW 295 0.5%
ADD ON (AND, OR, AND NOT) 1,525 2.8%
LOGON or LOGOFF 5,265 9.7%
COMMENT 1 0.0%
SAVE 1,680 3.1%
USE 34 0.1%
OTHER 1,637 3.0%
2.1 Article Text
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DISPLAY TEXT commands 3,157
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 354
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 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 2,771 19.8% 723 26.1% 10 53.3 169.1
TITLE WORD 2,255 16.1% 830 36.8% 6 94.4 815.1
EXACT TITLE 217 1.5% 88 40.6% 1 9.2 42.1
JOURNAL 643 4.6% 238 37.0% 287 2392.0 7698.2
EXACT JOURNAL 432 3.1% 172 39.8% 790 3646.6 8107.1
SUBJECT 1,732 12.4% 916 52.9% 255 5413.1 19010.1
EXACT SUBJECT 132 0.9% 59 44.7% 152 4294.8 12048.3
KEYWORD 4,563 32.5% 737 16.1% 58 2513.7 19038.9
PUB TYPE 41 0.3% 4 9.8% 111 274.7 441.3
DATE 357 2.5% 100 28.0% 32 288.2 1082.8
ADDED 8 0.1% 2 25.0% 3,971 8741.3 7390.2
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 8 0.1% 1 12.5% 587 2099.0 4349.7
GEOGRAPHIC NAME 72 0.5% 12 16.7% 64 545.4 1016.3
SUBJ CATEGORY 58 0.4% 4 6.9% 497 9958.4 24428.7
COMPANY NAME 337 2.4% 107 31.8% 57 885.9 6967.5
EX COMPANY NAME 26 0.2% 8 30.8% 94 338.8 445.5
DUNS 4 0.0% 4 100% 0 0.0 0.0
TICKER SYMBOL 5 0.0% 5 100% 0 0.0 0.0
ID NUMBER 2 0.0% 1 50.0% 1 1.0 0.0
ISSN 3 0.0% 1 33.3% 880 879.5 1119.4
PERIODICAL 220 1.6% 36 16.4% 6 215.8 946.0
EXACT PE 85 0.6% 23 27.1% 4 15.5 36.3
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 1 0.0% 1 100% 0 0.0 0.0
Other indexes 47 0.3% 13 27.7% 279 2112.1 5172.3
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 1,202 9.4% 379 31.5% 12 372.4 3782.4
Single 11,542 90.6% 3,313 28.7% 32 2057.9 14711.8
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:
SUBJECT 70 100% 22 31.4% 3 9.4 14.8
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.7%
SHORT 90.9%
LONG 1.1%
TAGS 0.0%
FIELDS 1.0%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.4%
COMMENTS 0.0%
Other 3.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. First word of command is invalid 32.7%
2. NS command - no next screen 29.1%
3. FIND command with invalid index name 7.7%
4. DISPLAY command contains invalid word 5.1%
5. PS command - no previous screen 4.5%
6. Valid command at an inappropriate time 2.9%
7. DISPLAY command-record numbers too large 1.6%
8. Search term missing from search command 1.3%
9. Command contains escape or arrow key 1.3%
10. Add-on search, no index name after verb 1.2%
11. All others 12.5%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 17.9%
2. FIND (ABI DB) 12.4%
3. LOCATE (ARTICLE DBS) 11.8%
4. INDEXES (ABI DB) 7.6%
5. MAIL 5.6%
6. COMMANDS (ABI/PSY DBS) 5.5%
7. DISPLAY (ABI DB) 3.9%
8. ADDON SEARCH 3.8%
9. Unrecognized term 3.7%
10. ABI/INFORM DB 3.1%
11. All others 24.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.4%
2. First word of command is invalid 14.8%
3. FIND command with invalid index name 8.0%
4. FIND command with zero results 7.1%
5. DISPLAY command - middle of >1 screen 5.5%
6. DISPLAY command-complete in one screen 5.2%
7. DISPLAY command-first of >1 screen 5.0%
8. FIND command retrieves >1 book 4.8%
9. NS command - no next screen 2.9%
10. PS command - no previous screen 2.2%
11. All others 24.0%
Ten most frequent SHOW requests:
1. HISTORY 38.9%
2. SEARCH 23.3%
3. MAIL STATUS 16.0%
4. MAIL SETTINGS 5.2%
5. SETTINGS (ABI DB) 3.1%
6. GLOSSARY 3.1%
7. DLA NEWS 2.8%
8. DISPLAY 2.4%
9. ABI NEWS 1.7%
10. LIBRARY NEWS 1.0%
11. All others 2.4%