MELVYL ABI DATABASE TELNET STATISTICS
Time period: 10/01/01 through 10/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 22 224 246
Davis 85 0 85
Irvine 81 0 81
Los Angeles 1 89 90
Riverside 10 1 11
San Diego 10 27 37
San Francisco 19 0 19
Santa Barbara 11 14 25
Santa Cruz 2 4 6
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 2 4 6
Other-Network UC n/a 242 242
_______ ______ _____
243 606 849
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 19 69 554
2-4 a.m. 4 7 53
4-6 a.m. 10 44 275
6-8 a.m. 28 110 859
8-10 a.m. 100 254 2,028
10-12 a.m. 177 495 4,170
12-2 p.m. 152 381 3,795
2-4 p.m. 148 395 5,325
4-6 p.m. 111 305 3,013
6-8 p.m. 34 99 1,743
8-10 p.m. 43 95 990
10-12 p.m. 23 76 1,876
__________ __________ __________ _________________
Total: 849 2,330 24,681
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 67 719 786
Davis 279 0 279
Irvine 257 0 257
Los Angeles 2 235 237
Riverside 29 0 29
San Diego 20 71 91
San Francisco 69 0 69
Santa Barbara 22 43 65
Santa Cruz 0 8 8
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 2 6 8
Other-Network UC n/a 499 499
_______ ______ _____
747 1,583 2,330
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 921 10,180 11,101
Davis 1,321 0 1,321
Irvine 2,320 0 2,320
Los Angeles 17 2,679 2,696
Riverside 57 0 57
San Diego 28 507 535
San Francisco 1,290 0 1,290
Santa Barbara 177 391 568
Santa Cruz 0 34 34
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 80 80
Los Alamos 0 0 0
Other - UC 0 13 13
Other-Network UC n/a 4,666 4,666
_______ ______ _____
6,131 18,550 24,681
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 2.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 ABI Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 10:55
Average session length (minutes:seconds) 13:50
Longest session recorded (minutes:seconds) 152:57
Average number of searches completed per session 2.7
Retrievals per search - median 5.0
Retrievals per search - average 812.5
Retrievals per search - standard deviation 8306.8
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 2.6%
Percent of long searches completed
(includes partial results) 72.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,097 28.7%
DISPLAY (excluding automatic displays) 3,153 43.2%
BROWSE 10 0.1%
SELECT 1 0.0%
HELP 88 1.2%
EXPLAIN 86 1.2%
SET/RESET 400 5.5%
SHOW 20 0.3%
ADD ON (AND, OR, AND NOT) 233 3.2%
LOGON or LOGOFF 952 13.0%
COMMENT 0 0.0%
SAVE 73 1.0%
USE 1 0.0%
OTHER 195 2.7%
2.1 Article Text
_________________
DISPLAY TEXT commands 266
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 54
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 604 26.4% 139 23.0% 11 48.9 154.8
TITLE WORD 489 21.4% 192 39.3% 4 49.7 146.8
EXACT TITLE 45 2.0% 24 53.3% 1 6.2 8.4
JOURNAL 105 4.6% 34 32.4% 391 3257.4 9844.2
EXACT JOURNAL 53 2.3% 20 37.7% 523 2700.4 6859.1
SUBJECT 140 6.1% 69 49.3% 239 6545.7 30630.6
EXACT SUBJECT 10 0.4% 6 60.0% 267 497.0 657.3
KEYWORD 601 26.2% 96 16.0% 57 1989.1 12634.1
PUB TYPE 16 0.7% 3 18.8% 122 338.5 620.0
DATE 56 2.4% 8 14.3% 11 114.0 351.2
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
GEOGRAPHIC NAME 0 0.0% 0 0.0% 0 0.0 0.0
SUBJ CATEGORY 0 0.0% 0 0.0% 0 0.0 0.0
COMPANY NAME 11 0.5% 2 18.2% 66 425.1 753.6
EX COMPANY NAME 0 0.0% 0 0.0% 0 0.0 0.0
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 105 4.6% 10 9.5% 4 32.4 117.7
EXACT PE 46 2.0% 1 2.2% 5 17.2 30.8
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 8 0.3% 4 50.0% 117 2454.0 4748.3
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 202 9.7% 55 27.2% 6 150.3 834.5
Single 1,880 90.3% 498 26.5% 19 1311.3 10696.1
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 8 80.0% 1 12.5% 1 1.6 1.1
EXACT SUBJECT 2 20.0% 0 0.0% 11 11.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.9%
SHORT 87.0%
LONG 0.9%
TAGS 0.0%
FIELDS 1.8%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 5.6%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 8.5%
Ten most frequent errors:
1. NS command - no next screen 35.5%
2. First word of command is invalid 28.8%
3. FIND command with invalid index name 10.3%
4. DISPLAY command contains invalid word 4.3%
5. DISPLAY command-record numbers too large 2.5%
6. PS command - no previous screen 2.5%
7. Search term missing from search command 1.9%
8. Max. # of ports to a Z39 db are in use 1.2%
9. Valid command at an inappropriate time 1.0%
10. DISPLAY command - no FIND results 1.0%
11. All others 11.0%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 19.8%
2. FIND (ABI DB) 18.6%
3. INDEXES (ABI DB) 12.8%
4. LOCATE (ARTICLE DBS) 10.5%
5. COMMANDS (ABI/PSY DBS) 9.3%
6. DISPLAY (ABI DB) 5.8%
7. B042 4.7%
8. MAIL 3.5%
9. DATE (ABI DB) 2.3%
10. Unrecognized term 2.3%
11. All others 10.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.3%
2. First word of command is invalid 14.4%
3. DISPLAY command-first of >1 screen 8.6%
4. FIND command with invalid index name 8.0%
5. FIND command with zero results 7.5%
6. DISPLAY command - middle of >1 screen 5.7%
7. DISPLAY command-complete in one screen 4.0%
8. Multi-index search with zero results 2.9%
9. DISPLAY command contains invalid word 2.3%
10. NS command - no next screen 2.3%
11. All others 14.9%
Ten most frequent SHOW requests:
1. HISTORY 65.0%
2. SEARCH 15.0%
3. SETTINGS (ABI DB) 5.0%
4. ABI NEWS 5.0%
5. GLOSSARY 5.0%
6. MAIL STATUS 5.0%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)