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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
* \3 l; R; q4 d+ Dto do-business   a" _4 N, X8 N7 y" {
rt random 360
5 q! }) B$ e; U, S& H% P* ` fd 1( w  k, ~' y9 ]" k1 V% @1 K& V
ifelse(other turtles-here != nobody)[& S/ _( ?' [! N" N* s
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
( v! A; [/ D% W' V" r4 N( [   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : _* i4 {  F3 g5 h- e% K6 M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 X; l/ {/ x; m6 k   set [trade-record-one-len] of self length [trade-record-one] of self# m+ M0 r6 N4 o3 p( V
   set trade-record-current( list (timer) (random money-upper-limit))+ z0 \0 P+ m  `# O% |0 G
+ G; I% A1 I( I$ s" b+ |
问题的提示如下:
5 Y5 g& J0 O; o6 H% x; A2 ~' U
  C2 H9 w  a: U) T8 N3 s& N2 herror while turtle 50 running OF in procedure DO-BUSINESS
: Z; G7 o- I3 k9 ]% ^7 h9 g  called by procedure GO
5 D! g3 ?4 t; fOF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ K  @3 t, ]9 ]
(halted running of go)
* T( Z3 k/ e0 [" a7 ?8 U
6 q3 e% @( g9 A, z( N1 u4 O这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
/ Z0 R8 Y9 t: b+ ~  I) o另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教5 b, S- b: r2 g3 o3 t0 x
globals[' S1 ~( `. }! D+ T
xmax
6 n4 F* L" H( ?- Pymax
- f6 |. v5 h' Vglobal-reputation-list2 I" ~: h* U- A) u
3 H; _- s; G1 r; l: E. j# B4 ]8 U
;;
每一个turtle的全局声誉都存在此LIST  ]. r9 V* p& f3 i. W; h  c
credibility-list* i$ M6 N7 ?3 n, p4 z4 \
;;
每一个turtle的评价可信度
. v5 I( y% l8 ^% qhonest-service) K0 K; k* \+ t; B% @1 l
unhonest-service( M- k3 @4 i& L" a. [; q
oscillation* X* Z' {( ?& N+ B  C
rand-dynamic
5 E/ P. K' Z3 H) J! M6 h. a3 m]9 Q: _4 t' n' X8 A' c
+ [1 V% _, H% E- v
turtles-own[
- A) \  F' a, Qtrade-record-all/ ~  g2 u2 `2 B0 ~6 h3 Q# |2 V
;;a list of lists,
trade-record-one组成0 N* d9 m& U- z7 D' e' S
trade-record-one( Z% X( O- w: g
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 j& H, E$ ?) O4 y3 p# r

4 D0 U$ u" ?4 b) @4 Y;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
) p! A' r4 P) o) Q5 p' L1 J. ftrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
+ r% X! I- ~0 Y6 S" dcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list" h6 e- k; s! A
neighbor-total, V. \6 X8 a2 n& c3 Q7 X& N7 @
;;
记录该turtle的邻居节点的数目0 s6 I: q5 t$ K1 k- T
trade-time
7 I" P5 ^* }8 M" B0 g; z;;
当前发生交易的turtle的交易时间5 B2 l% K+ P  c( ^% T
appraise-give: l7 g2 r# h% ^% M
;;
当前发生交易时给出的评价. F* l5 I" E4 V; b9 G7 S0 f
appraise-receive5 N2 Z" t7 {' }1 H/ A
;;
当前发生交易时收到的评价
4 p* p/ j5 x+ l4 [. O' |appraise-time
8 m. R6 i( n& u- c;;
当前发生交易时的评价时间
3 C. a( S( V1 G. W. Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
- {# Q% k+ {& Y  M% }trade-times-total0 e; C9 n" k1 F5 y  q. q+ d9 U
;;
与当前turtle的交易总次数
- J1 b, h6 ?4 r& v/ gtrade-money-total( G" {1 {5 ^: d$ M% c9 H+ \! R; m
;;
与当前turtle的交易总金额; G+ L2 K- O$ H0 M2 Z- a
local-reputation5 o0 c5 J6 T" J' g; r) l; Z1 I
global-reputation
- G1 e1 c# P4 N6 f* o7 Fcredibility
+ X3 d) A9 d% W;;
评价可信度,每次交易后都需要更新
* g& ~6 Z" }. Jcredibility-all
7 E2 D) s9 G( }/ A;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
( D. h- G8 }/ G; E3 n) i8 s
# Y6 _6 ?, N# k;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.59 \- p5 _1 [3 ?. r2 l
credibility-one
- c& s2 G: f+ K# B;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
4 D0 E) o; n0 h9 {  Zglobal-proportion; K7 l1 }* l0 d
customer
1 K+ F% T( A+ k/ d' ?' icustomer-no& {% B3 B) l% s
trust-ok3 y' \; c6 Z7 b
trade-record-one-len;;trade-record-one的长度
/ _& ^1 X2 r8 r- H4 x( i2 w* Y]8 {8 m- I( z+ ^) F3 C

0 z, {3 h; q# ^( q2 r;;setup procedure
- w0 m. l) e5 \2 B) ^5 R0 \
+ V' {+ H9 A+ f7 x% H; X4 \% Nto setup; x/ m% u( {) _5 r( o! \% Y
; ?: t0 c8 \- `) _1 y
ca

2 A1 W5 V' V/ w1 @7 v/ f" C- s, s8 X  r3 e9 E( `! b& L" a/ `
initialize-settings

- G8 \- x+ s. c6 S% w6 P0 j% U6 k( [6 s4 s7 B5 t- D3 ?! f9 W
crt people [setup-turtles]
5 z* W4 W$ B( n/ m: v

" H) ^& q8 @7 |; r4 F( Rreset-timer

3 t: B4 J$ R: Z- d; I4 T, z' ]9 z+ {
- I5 `0 G) D( E2 V0 U; wpoll-class

! @* ]  \* j, L0 Q) b1 t6 o7 p# ]4 k
setup-plots

' t7 Z3 _9 x5 c% D3 ?3 ]$ s/ x2 k$ i/ C2 U4 d! K5 H
do-plots
% V, g* `( w$ _7 J
end
2 |( T# l$ U; t$ {! M1 E, f
9 |+ t8 {7 O! I: xto initialize-settings
8 h6 |* b9 [6 j' v! K, e. T3 K
; {8 Y8 [% b- @set global-reputation-list []
, r  A7 o2 `2 T, O
- ~4 k, w) a) C4 _/ I+ h+ }
set credibility-list n-values people [0.5]
. |/ s; j/ P& T) K+ r! a( R0 V
; v2 ^2 s9 S2 X, d5 R
set honest-service 0

; S6 q. N2 P4 V6 V) c9 M, K5 G. c* d$ z& Q8 i
set unhonest-service 0

  G* Q7 u4 L  Y% J0 G2 [* Q
" x, Z  ^, q: \# o# Wset oscillation 0

) L) F+ y7 ~8 g
9 V5 H# J4 D6 @6 w3 eset rand-dynamic 0

6 x7 M+ l* i" Q) ]: ?& y; c" send, A) P- H; c5 f: N! W

% M' t# q" Q! }8 z! H( a* @; Lto setup-turtles $ j) F- A/ Q7 Z& N- J# t( r" u8 Q- o
set shape "person"
9 ]2 m8 a: t" b/ ~6 `% f2 rsetxy random-xcor random-ycor
7 \% P0 i/ c% e6 e( Fset trade-record-one []
+ T6 D8 u0 q) \% q* X( E0 k9 A1 u' L
0 d( f* {( W  T! h$ k) {
set trade-record-all n-values people [(list (? + 1) 0 0)]
, K' s' W" [% {. U  `0 m

/ X  `" N( J9 \9 V; I0 Cset trade-record-current []6 K( `2 ^3 a# A" P
set credibility-receive [], }1 K/ d; U% u
set local-reputation 0.5( G# K8 K2 @. L' I
set neighbor-total 0# F0 y) A. g4 _( V" m6 n. U& F
set trade-times-total 0$ u* q& A6 p" I  z# t+ m+ |! h
set trade-money-total 0. N/ p7 m* p% m8 l: e& C! k
set customer nobody
- Y9 q; m' |/ f: Dset credibility-all n-values people [creat-credibility]
, U% ~( ]" Z- }# C5 n8 X3 M0 Zset credibility n-values people [-1]
6 K( R; Z9 B) Y' Eget-color2 \1 S+ x3 {7 l0 m9 N

1 d2 O9 e0 l- o% D& |6 ~4 n, Y7 Nend8 ?, Q$ u, Q1 m  c8 a6 H9 g
- `$ C* H1 @" M' Z4 \* q3 r/ e
to-report creat-credibility* i  ^5 C: G- n# ^
report n-values people [0.5]* c# T* w" U' U. X8 A. G. |
end
! q/ u/ ]8 }8 j, k0 c
3 T) }! h8 V' L; W# _- Ato setup-plots
# W( I+ D" A, X$ D8 X: r
  \4 o9 h4 W# J3 K4 o, Xset xmax 30

9 i* x- D& \6 p8 |: f% f0 e' p. {  {1 L0 `
set ymax 1.0
+ F- k" p, }- T0 \9 D+ H

& U4 c& z, K( uclear-all-plots
$ G- M5 f; ]" b2 s& b
, @/ v1 a; V8 f- [2 }
setup-plot1
; |( @9 g6 G" A5 v" }/ G
+ I- J5 i+ j4 H7 m9 v% P$ j
setup-plot2
4 V$ J" F/ \2 R6 E0 m

0 G3 t/ V; Z/ U% v) A! ?  T5 wsetup-plot3

5 x  j7 X2 R! e! L* q5 @end
! c, m, O/ Z- @; V8 _4 T' E/ k6 E% n' L
;;run time procedures$ @' z" T" c5 W; T1 c! D' z

* e. T' a/ P+ x6 rto go
8 s8 i# n5 x* d4 O! y# M3 U
9 U, n# s/ F: s2 m8 ]) z' \' rask turtles [do-business]

  _" B- ]6 G  [% W' z) xend* u& o5 e2 `0 F8 C; e# [& m
( ?; C+ S. L0 J$ K) b8 f
to do-business 6 I$ R5 b3 w$ w4 r4 Z0 ]
2 r' l6 b- v+ }* m

/ S0 B& V( r9 W" @! Zrt random 360
7 c8 l0 {% z% q& T/ x

8 a' A& a) }4 y! k! w9 s( \- kfd 1

: Y. X2 J, J" M9 T" o8 {" X+ g, P0 b& a
ifelse(other turtles-here != nobody)[

$ @9 ~: v! s' A( X6 K+ [: P
1 k! e6 C, I; j: S. }* p" jset customer one-of other turtles-here

# Y: u5 I0 ]- t# A; u5 A4 I9 }$ ?9 ^, p; g  Q' P  O  s1 h
;; set [customer] of customer myself
2 c+ T2 d! V. |$ l0 ^

6 ?4 A0 k# h2 |9 T! |$ n/ vset [trade-record-one] of self item (([who] of customer) - 1)
: U0 k1 Z2 M4 b9 R' w# l7 w7 n[trade-record-all]of self
, V$ N& B: H. \: _' F;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( z% [8 n7 t5 Y2 V# L6 W
, I8 Y- h+ i1 v- e* U" l, Yset [trade-record-one] of customer item (([who] of self) - 1)8 I" m4 N+ y" M
[trade-record-all]of customer

4 X& h- k  W7 }- H: L5 O, ?/ r  }3 g
set [trade-record-one-len] of self length [trade-record-one] of self

/ z/ e: J& g- G) s: I) ?+ |- X4 o/ G7 P1 f4 a
set trade-record-current( list (timer) (random money-upper-limit))

7 V8 K% P, d0 s6 [! P
6 T# W  t/ d  X, }. t! Y) G# g* Aask self [do-trust]: _4 ?4 s. j# G5 a3 q& x
;;
先求ij的信任度5 O& L0 E. R' U$ C; F2 x
/ h% _6 i5 i/ O. g3 D
if ([trust-ok] of self)
- ~4 S; Z! D/ u7 h1 b0 D;;
根据ij的信任度来决定是否与j进行交易[  n- D0 k2 B- I
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* d  k3 r& X$ Q5 [' E$ W$ u3 x: n' I( `; m9 P  Q" R
[
' O6 N/ l0 L% J# D( j$ O2 t

3 s/ V7 D4 r3 {! {do-trade

# ^! @  m& ~! J! }: N) ^/ L0 ]5 E% a$ z% b, Z, v# |( G; B" J
update-credibility-ijl

  F& b7 b# a9 L8 P9 U  Y" N5 T8 {/ S7 v( O  w  {+ d4 b# ?0 i
update-credibility-list
( x; h# [3 l2 ^$ Z
  K) ~$ Z& ~% s, Q6 ]. ^* s

  l# \6 S5 B& M( t* y% D- S5 G, Vupdate-global-reputation-list
4 ?& V! R: K1 b) f8 K0 c

; y4 [% ^7 O0 T2 \% p8 Kpoll-class

" o* R9 ?! G. T4 L  z! A; q, R( L" b  Q( i+ B
get-color
) b8 ~& l. d" w+ `! c  @
" B& v" ^- e& o# z; U6 J8 B. {
]]
  q8 E* I% t5 \) o8 [+ s1 ]5 ]& e# y4 y, F0 u) ?2 B" R+ B
;;
如果所得的信任度满足条件,则进行交易
) G1 A3 |4 m5 w* e5 i
' R1 n5 T% x0 O$ k/ H3 U[
" _3 p" i+ y+ G8 Z8 y) F0 i2 }

: M! U1 ?" g& \0 {rt random 360
* [" b1 i8 E+ |' k

( E2 d. L4 t5 x" M6 [& [0 f# Ofd 1
7 v3 P+ i( a; D! j0 V: y# ]8 _

9 F3 b1 E; }8 ~6 p2 v]

# }! q& w# Z- s- o' l# M& @, v# }+ a9 Z9 |
end

7 r2 @  Q+ V% r+ E/ r& d1 T4 d- u! E
to do-trust 7 ~6 c5 I: y& p' D' ]1 L
set trust-ok False; \* {2 X- N# i$ q; L7 n8 s+ x) m
' r4 _- u; |5 }
! d7 {, b% ?/ E; |# T3 o& _8 r8 t
let max-trade-times 0  Q9 J* k  t1 z4 |% M
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ R, f* [9 n9 glet max-trade-money 0
. m- t" ?0 l" u" `% xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 F" r! ~9 y9 hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# w5 ~. S& u/ {0 f! `
; D1 `6 W5 L5 p7 B. s

: w# o9 H$ i6 z+ w$ ~get-global-proportion
! {. A# l* H6 K9 [let trust-value" A5 b# F8 p4 L( f9 A4 I
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

( h: c6 G6 t, k$ @2 X( @8 Z+ d" t$ Bif(trust-value > trade-trust-value)/ X) V' x1 s" A5 Y
[set trust-ok true]+ X: n% I- c' K$ M2 ~) b, O' K
end5 P1 C1 i1 e' y3 `
- S% z4 {* @  I( @
to get-global-proportion/ A0 }6 i/ H7 U. L" R
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 o$ u  ~) K7 N# a. a
[set global-proportion 0]3 r1 Q& L; Z, \5 w( w6 j
[let i 0" Z' ^/ k# v" D  Y2 }/ d& b
let sum-money 0
/ c1 o/ f" O/ W6 L3 G6 dwhile[ i < people]" A7 x0 u/ d# k! h
[+ D8 s/ x5 N$ f$ n6 _( }' D
if( length (item i
6 y/ M" A/ g0 ^. [. k[trade-record-all] of customer) > 3 )
- E! D3 f7 Q2 l: O# a  Y
[
: ^$ ~' g% s+ O( b& i6 C+ t5 h" p7 V- n/ }set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" y# e! ~: ]) A  V& G- G]3 J2 O# }- |- }& g5 \0 g' Q
]
6 j3 H( E$ K" Y7 q6 L! @let j 07 F2 @5 ~! ?& W1 j5 u- S& L
let note 0: E! M5 X% U$ b( {
while[ j < people]" I# [  N% m' |: v8 \, v
[7 s( c; E, C0 N  C5 D
if( length (item i+ i5 T+ \- e3 O3 h( L0 I2 V
[trade-record-all] of customer) > 3 )
; D, A! V. i4 s9 T/ R( S% E# J# }8 H& y$ V
[3 X+ N4 h/ o" E3 X+ s- L2 ?6 A+ F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)9 u1 ^' Q3 J$ G
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 N% X" j! E8 O' ?8 K3 q; ?7 A6 L  O9 K
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, F# R4 Y1 n" |4 E9 P) X]
& }4 b6 @2 l3 H0 ?3 m; b]
1 Y5 e9 [* T. \1 zset global-proportion note
* T; j% C. Q+ {]
: o- X. O8 F! nend/ f0 X1 Y: W' z7 `7 ]

0 M1 K8 o1 H1 jto do-trade
7 P$ l1 D0 ?- h;;
这个过程实际上是给双方作出评价的过程
0 C3 H( T, `/ U4 @' X4 Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 w& R3 R8 q' I# T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ O1 i4 ^4 V+ G; k4 K
set trade-record-current lput(timer) trade-record-current
6 {# j+ e$ G1 i3 a$ b, n;;
评价时间
. x3 n2 A9 U* B1 |+ Uask myself [
% X) g2 r& W; [  W) T0 e) [update-local-reputation
5 n+ s- r# r' m% K* pset trade-record-current lput([local-reputation] of myself) trade-record-current; B) k- v- r. A/ C1 F% q
]
. ^* x" U, v& a! ?8 P/ Rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ [5 s4 }$ _" l1 R
;;
将此次交易的记录加入到trade-record-one% o+ U4 y5 S* c3 v& p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% |% T3 J8 }. A
let note (item 2 trade-record-current )0 J% u; |3 j7 i8 S+ U9 k, ?
set trade-record-current
* e3 B/ N7 f7 @) G" K. n8 F5 w, h(replace-item 2 trade-record-current (item 3 trade-record-current))

: p& F+ o- e9 G+ N& `set trade-record-current
% Q* R" @6 U: X(replace-item 3 trade-record-current note)
6 u# ^! @3 B2 ^+ ~& F! L# X4 s* Q; J- h: T& j, e

. J) D- x8 I& r, R; G5 oask customer [  H& \( t, A0 p" j) h' e
update-local-reputation7 Y% @) h; `$ w
set trade-record-current
( L4 p3 F! j+ Q" [! l(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* M2 O9 g5 I" o1 h]
" O; [6 M4 ~, S- @6 J( d# x  w* o2 m% D3 [" n; N

5 m6 T8 x. q. S0 A: S7 L+ `- Uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 H# ?" h/ v8 j4 U" w& R6 l
0 |' x5 J/ R+ O
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. L9 H0 C# B6 F! p* L! T( J, Q;;
将此次交易的记录加入到customertrade-record-all
# d7 J' |6 a' t( N, L6 b) uend
% h# x* z: R7 p- o( A& F' O5 X- R) G, I
to update-local-reputation
* X: A+ Q. o9 ]; l; A/ s; Aset [trade-record-one-len] of myself length [trade-record-one] of myself
7 X, o  ^( Z( t) c: z) a; H" p2 r! q8 B

: f! M0 W% [" P1 Z: Z;;if [trade-record-one-len] of myself > 3
# j" B: ?- {, q0 r* S+ Y
update-neighbor-total% Q' g' _6 s- e; p! z6 a( S/ C
;;
更新邻居节点的数目,在此进行
9 W/ p$ v; K, t* R* A' G5 F6 `let i 3& J8 V) H- r7 ]4 Y" ^- s
let sum-time 01 w8 r' i1 \& ~6 A" P# I# W/ [
while[i < [trade-record-one-len] of myself]
: @  P% X( g  r[% V! b: x7 o0 Z, C" k" g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( h! G; g+ }4 ]3 N( R8 @1 B8 _
set i( c7 O. I3 T& l4 ^7 r- c/ C
( i + 1)
+ J' r3 b$ |, x( G# Z. U
]
" N& ~/ n" v1 Elet j 3
. g- K0 z' I* P) Dlet sum-money 09 R8 P5 U8 z- {' J1 J' J# g8 d3 E
while[j < [trade-record-one-len] of myself]# n7 W! _% \- L+ G$ R8 J5 [
[( l# f, }6 f1 J1 q/ B4 ~8 f' M2 |
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
" s# s/ t. o8 ?2 {. u& Wset j6 j) Z! @. B4 O/ U7 m! |" \
( j + 1)
! m0 U" e7 a$ u1 e
]
8 X! g* c" I1 {) h( @8 klet k 38 a  B1 o+ U  C
let power 0, U( \6 O$ h1 s2 g! Y) Y: Y6 r
let local 0" i9 m, c+ u- g! q
while [k <[trade-record-one-len] of myself]
- K0 T- f9 k& B% c2 T. c[  a# Z$ ^7 y. v: p% b
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
' v2 }. N$ q$ ?' P( g1 eset k (k + 1)
* R8 T! K" q) b9 n) z+ W: `! T* f]
5 M1 D0 g  L( [) u. E# U- R! rset [local-reputation] of myself (local)% `% O8 P  M, P% ^! K' i0 n+ I
end
4 s# B7 {2 W5 t$ t$ c" S
4 @4 B- R8 E4 L$ P, ^0 nto update-neighbor-total
: e- ~! e: ^- P' F
% n1 F8 B( X/ z. Fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 J, H  W: z; t2 q
9 B" T* O- K& k: j- F
* r7 Z1 F/ C$ f4 ^* h
end5 a2 n2 F' M3 w

* v2 y5 d* Z$ b) u; F3 m1 eto update-credibility-ijl / ]# }( V" z- H5 P% b$ d7 w0 q; R

6 b" w/ _. Y' c# ]7 i8 r% z  y  n;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。( w0 @. G' w! }  g; @( ~2 Z
let l 05 v+ R+ H6 X/ o$ L
while[ l < people ]$ v" f/ B  ?. p; d) [  N4 Q; s
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
8 _, j% W! Y7 G+ P6 f* ]/ J[% ?/ b, _8 I2 i( }( }) K" N
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. K# ?4 C3 x# x6 dif (trade-record-one-j-l-len > 3)  t9 `# \+ a* s. Z: L8 t
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one  z* _$ P0 d8 Y/ m; P  t3 u" \
let i 3) @( {5 H" o! E7 V$ Z0 `8 I
let sum-time 0: U+ l" @1 ~! Q, b5 p, E: f
while[i < trade-record-one-len]
) @; ?# a; a+ f- p+ Y& [0 Q4 g" k[1 @- d" g* g, G! b' O: j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) J& _# o9 _+ L7 `  K* M9 z0 |& s  i
set i
, i; M4 c6 `2 E, {+ z8 _( i + 1)
- Y! ^  S8 T3 l: i
]( S" Q1 J( r) u1 B  O/ Z6 k& B
let credibility-i-j-l 0
+ {% V, w! ?" I' V  t- Y/ |;;i
评价(jjl的评价), a$ J$ D, r( M
let j 3
9 Q! }! A. \$ \& M) W) P$ \: dlet k 48 S: r4 z; M3 {, a5 r% m1 E
while[j < trade-record-one-len]8 ]2 [( e# @9 _" X$ _/ b2 Z) c' t7 q
[( J* z1 u  L* A" n. d1 |$ _# O
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉  v. p* b$ p1 Z/ t- [  E9 A
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time), U5 |" m/ D- m
set j
; h: ~- H! F# X7 y( j + 1)

& Q: p! {4 @! X+ N& e. L7 d]' Z/ ^, h! J/ s# I( Q3 l
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
, q* l- O: L) P- q: Q& s: J: g1 _
. A: C9 A$ \# O! M0 C

: p% ^$ u& j- w7 vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ z: ?' r/ M: i; h+ M;;
及时更新il的评价质量的评价
& @9 ^( u% U" y0 ^9 Z+ f$ r7 O) m$ rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 Z  K+ |$ \, v9 d! k! _set l (l + 1)( x  y. R( @0 `; \$ x$ r4 T# m
]
$ f- O. [/ P2 uend/ _! o% D* r$ Y! h8 @7 R; m0 K

/ z$ }6 D, v' [) _, o3 mto update-credibility-list, w& j$ x0 V  B* z
let i 0
7 Q: c# O5 b; `while[i < people]
1 U5 _# D9 ^( @0 `[/ v/ \( F$ Q2 U- U% l: u
let j 0
' y- M2 Y/ j, `5 |) v8 I8 klet note 0
: I! h0 l5 v; f8 k5 k0 mlet k 0
  K& G: Z8 v' |+ e3 M, |;;
计作出过评价的邻居节点的数目# L4 E; `1 ~5 P$ j* U
while[j < people]
% t- V& T0 p+ F- M1 M2 y* Q( X- v[1 \: [$ s8 _  }4 F* H
if (item j( [credibility] of turtle (i + 1)) != -1)
) w% `! s7 ^/ H1 u- [8 G( m! Y;;
判断是否给本turtle的评价质量做出过评价的节点
, Z& |5 Y) o0 B' S5 F/ R% S[set note (note + item j ([credibility]of turtle (i + 1)))( H3 S7 p- e% N( E3 |; ?6 e
;;*(exp (-(people - 2)))/(people - 2))]

7 `  N* j" v1 I5 ]& U& T$ Fset k (k + 1)' k6 g3 A5 h9 m# e* n: t
]+ X' B; Z& d2 }
set j (j + 1)
& v. u( H: p8 ^2 H; Z]
" @8 u7 _, D! w5 e; J; h) m* dset note (note *(exp (- (1 / k)))/ k)% c6 w5 d+ X) Q5 {9 d; e
set credibility-list (replace-item i credibility-list note)% s8 U3 ]/ O8 X
set i (i + 1)
! e/ C0 v- \# h3 C]
; g: a: u2 V1 s' d( m) Iend
/ ~2 I! B2 b2 d# ~7 e9 w# o. r; e8 ~$ Z9 Q4 c! f- Y+ r$ |3 `
to update-global-reputation-list! i  m2 X: Z1 J  q% u& Q
let j 0( e# A; ?1 N6 U9 A) }4 c/ A
while[j < people]
9 i+ G/ R' c& x, k9 U[: A4 G( y  _7 q* C7 g7 \
let new 01 |& X" `- M4 Q+ i$ A( Y0 F
;;
暂存新的一个全局声誉
0 ^7 P0 \2 V0 ?" m( d" ^2 clet i 0$ U6 f7 v; }2 n' y
let sum-money 03 N9 h( k, z2 a. g4 M
let credibility-money 0
$ v5 m; a' W& D5 x9 Zwhile [i < people]+ ?  h# P7 N/ k- Y
[" V$ \3 e$ d, [1 [9 C/ v3 T
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 F) F. w) e2 J0 u, z$ \% kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 ]; O) z0 m- W( M
set i (i + 1)
; d# ~5 B2 a" j/ B]3 |* e9 J* H+ P8 H) ~
let k 0
0 G, W6 r. a0 z$ H3 W& Ilet new1 0
1 T  J: B  G5 m1 y: J2 Swhile [k < people]
2 L7 G" `+ K8 P  V+ ][& A6 L7 @- g2 h
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)% G9 C+ R" R0 x  V* h1 A
set k (k + 1)
. V9 Q& Q2 q0 T( I]
2 j8 Y4 p$ }( Xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ Y1 ?+ S9 [2 @* M; k, dset global-reputation-list (replace-item j global-reputation-list new)- {5 G4 y, o0 q$ j5 P
set j (j + 1)
% @: K; v" Z: X]
: M* A2 V% o3 M; G9 Hend! h2 h2 o( u  Q8 Q2 t

' d! }) y; w) f& w# j  R$ S
2 s5 G: }& v; V; T8 p) _& r' @7 v  ~, X
to get-color
1 {$ R' y0 k2 o) y% n; p0 C9 s2 R0 m8 t# f$ s! ^: o- e! z; r
set color blue
$ c1 k; \+ f5 y  t' k6 u. ^- ~2 w
end( G8 \+ F2 z2 o2 b2 C. K, l
- b  h1 y* A7 y/ ?3 ]. m6 ~4 o
to poll-class
1 g. Z" a( P9 ?3 |! Vend
+ A- Y, I* C# G+ ~: y! q$ Z, y" B; J1 R# z; M
to setup-plot1
. ]5 N0 a: {& {
& }/ ~+ K4 V* K, h( u( o6 U+ tset-current-plot "Trends-of-Local-reputation"
) R' C& x1 p( d3 y! M2 i
; X$ ^$ ^/ [0 B3 D$ ]& a
set-plot-x-range 0 xmax

5 H% q3 b8 m( T* ^3 k. _9 B. ?% I* @# e
set-plot-y-range 0.0 ymax
% [, L, }+ K7 Y9 y5 I
end! y( S) Q1 S2 H- b$ u$ w# _+ G

7 c( d; I6 F7 @# k* G* h" E$ hto setup-plot2; f& S6 B' q: M5 G# g& n+ t

3 G+ `* B: a  jset-current-plot "Trends-of-global-reputation"

: g5 c8 t) |- x( s" o- E' S# W* j' o: V% N9 J) ~
set-plot-x-range 0 xmax

2 R5 i# {' n* c3 p8 N
' Y- @9 c- C0 K4 W: ]3 zset-plot-y-range 0.0 ymax

! y+ R: @8 R7 \* L) V5 Xend/ _: ^( z* |3 s) P
. L( K% `- u" Y4 n& }% u0 b/ F  P
to setup-plot3
' R6 N4 h& a2 `
! Y- N0 C0 p+ D" Eset-current-plot "Trends-of-credibility"
* n# ~  h0 M) G' }3 _/ y: m

* s2 |2 ^+ o/ f: Y* h( F" u. |set-plot-x-range 0 xmax
. f. k: W" j# Z' Y# h

( p" u  h$ y5 `9 |/ zset-plot-y-range 0.0 ymax
2 `  Y  T$ G9 p3 u0 H# Q% ~* Z. U  I. v
end8 S9 y" B6 r3 L6 S/ I! A
: W0 M  l4 B+ r- Z# f0 \; x
to do-plots0 W' t3 J8 Q1 j9 z& g
set-current-plot "Trends-of-Local-reputation"! {5 U6 z: B3 C" P8 ?
set-current-plot-pen "Honest service"
$ L" n* L. J) s. gend
! z8 q" Y* h0 _4 W; t, _/ b: X0 E; i' Q7 G1 s7 [2 d
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.- p& j! P6 Z  v

" y9 x) N, ^* l, s这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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