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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:' @6 _1 n9 w+ r
to do-business / F& {4 m" V, ^+ B* E- A
rt random 360
  Y  b4 i# I( {9 M5 K% M0 j fd 11 W, D1 i% ^3 M6 y! y  z+ W  K
ifelse(other turtles-here != nobody)[) N4 B! z# i6 |5 e$ w
   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.8 w5 ?% e8 Q0 x. J! M5 K
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& D' `1 i! u: C' e$ f   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" l- q5 i; c# ~* e* ~8 w
   set [trade-record-one-len] of self length [trade-record-one] of self  Q' Y6 B, l+ [' v- a, y/ l
   set trade-record-current( list (timer) (random money-upper-limit))) W" e& n6 {2 e) x* {
/ D# u8 Y) p# c0 |; t! n
问题的提示如下:5 f6 s0 l' v. i( j

" c' v+ }& `$ r+ Werror while turtle 50 running OF in procedure DO-BUSINESS7 |$ E" a9 g+ q/ g0 D# b8 R& [+ w
  called by procedure GO0 {5 V" \- ?3 {, Y8 \
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; _0 k( b' W1 L# `
(halted running of go)' b4 p3 o; V& |7 @' J3 m

1 |+ K5 `: D; ~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~~
! I) l7 c* z: p2 l) J5 C! q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3 O7 W1 m0 F: H/ r9 z
globals[
. ~+ ]- O) b) K% Oxmax' L2 k! M7 T& C  q3 c- T# H6 H
ymax$ W0 A( k) S; F/ D! Z
global-reputation-list
9 [# C. ^* h( E* X: Q  Q/ D- Z" B4 i1 ~8 `0 M6 B
;;
每一个turtle的全局声誉都存在此LIST" M( S% V0 \- \6 I$ s
credibility-list
) ?4 S/ J) x4 z* R$ T$ H- W;;
每一个turtle的评价可信度
; |6 ~5 w2 Q+ Q" N+ Ghonest-service, E- r; y9 P8 O. u
unhonest-service  q* G# n$ S4 n7 F+ N* ~/ U
oscillation/ o: j5 H( f9 t
rand-dynamic3 c/ ^5 @8 F2 x: J- _
]6 ]6 N# m0 Q! `

- S! \/ W: \' D' w. G& Gturtles-own[
9 |% S7 N. V- q5 P% r% x3 Ptrade-record-all
0 y4 Y/ H7 ~5 [/ N- X  N;;a list of lists,
trade-record-one组成
) }3 G- }# }/ A2 |' Strade-record-one' {4 i7 m, Z) R6 Q* 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: A" P7 f' \# P8 l, l6 B- r
, t; w9 A  {2 t) i
;;[
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]]6 P* R% p: U' h  J$ i& \
trade-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]
2 G9 P9 J9 L" `% B" j5 Hcredibility-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$ e9 E5 \2 ?% f" s& B( K% o
neighbor-total. E& v% l- M- q3 P/ y3 m4 H
;;
记录该turtle的邻居节点的数目
7 Q* i7 |" L1 P" D) u  `1 @trade-time
; ^, k; x% B. s, d* I;;
当前发生交易的turtle的交易时间$ e+ v  D" x; m/ G- ]: k; @5 V& J4 ?
appraise-give& w! p: I9 J+ @. t- z( e5 n
;;
当前发生交易时给出的评价# s( j% D4 H2 h8 z) h4 h
appraise-receive
- n6 S- [3 q$ E2 P;;
当前发生交易时收到的评价  c$ D/ B* i& u0 J: U
appraise-time5 T* v9 L. o& S$ M
;;
当前发生交易时的评价时间
& }2 q* H# ]( I. ]local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ c# Y' F' S7 \3 E) V8 W' j4 {
trade-times-total
+ e' ^9 R- e- j9 e6 C& t% ]: a;;
与当前turtle的交易总次数
  ~' A. g  w  V6 ~! Ctrade-money-total
) N% s" A; L; P# m7 a;;
与当前turtle的交易总金额
* Q" b. Z) I( F5 E( `local-reputation
2 o$ ~& O' p0 g. t+ G( t; zglobal-reputation
# Q0 j3 s2 m, X" A* r8 K$ Jcredibility
. z# w1 P) ]3 K# e;;
评价可信度,每次交易后都需要更新
# i+ a9 _/ N) K( T  ocredibility-all
. t' o: f2 M& K' f5 c;;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/ |& q# a1 Y, l6 ]3 n5 W
: d8 \; j9 B2 `# @. V5 T8 Q' x
;;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 }: I- F. u* _5 k
credibility-one6 k) ?4 Y7 V' m* e; Q
;;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people7 _  d, u. c7 F6 D& `4 i
global-proportion
& f) [3 y2 ^; m7 Lcustomer% f8 D2 \! F  @3 J
customer-no
: n- U; ~0 Z$ y: p* s$ ~trust-ok
  w8 u" m( n. @1 p1 \trade-record-one-len;;trade-record-one的长度0 }! z) Z# q7 q' s6 z9 T
]6 P9 M0 W7 U( h1 a: I" N

7 K* D* B+ |/ T+ B# g;;setup procedure
2 ]0 \! O( d2 i2 P& O+ f6 E, U. W- {( z! i" V" k7 D) ?+ y
to setup, \- R+ p9 z7 t# O1 W
0 c9 j# @( ~+ ?) m9 B  M
ca
/ p, H+ t! }! a8 \$ c
# ]& F$ d# B' s* x3 Y( [7 H. B. Z& {
initialize-settings

4 d8 Z* h% [. F% w
& _* e  x4 ?; }: ^, \8 {crt people [setup-turtles]

1 Y* f9 O0 o6 w9 f) F" H, b+ z& z, n
reset-timer
; ^$ A6 t* X, k0 [: [

% N* o; E( J% {: f( ^poll-class
: u5 y5 l; R1 ~. {2 W
; t# u7 x' m5 c, Z+ l; M- ~/ Q
setup-plots

' S7 v% e& B5 Q* W( x( d4 F# n/ s0 D0 Q6 _3 p
do-plots
9 S- X! L+ V8 v
end
4 ]/ D1 R) ^' D/ }! x4 c' k( `; g9 @$ H/ o
to initialize-settings
4 q) p2 P; I1 v5 x0 {* o; A4 X6 i; S9 l% {
set global-reputation-list []
! a& \( ]5 j% `/ [9 T
; z3 j* _. R3 y3 g6 w8 `0 I
set credibility-list n-values people [0.5]

# p8 M* o1 H. A
/ r" s  v' k3 `set honest-service 0

2 v. u  t1 p* S$ S$ Y0 Q  I/ [% k% a
set unhonest-service 0
! l; w$ ?  n0 ?/ Q; v) O0 C9 n

3 C: O/ A9 ^% m( Yset oscillation 0
# _; y$ P6 t# V- `$ r/ K9 B

% v: w: q8 e$ P+ b' q5 @: ~+ y1 Dset rand-dynamic 0

$ F+ V7 @4 Y/ S4 dend+ h' W& N) v- ]% ~
0 s# v2 e; l9 a) ^' L' i- Q
to setup-turtles
$ w' g8 Z. z" xset shape "person"
5 m. u6 Y" w' z: K, K1 d& d' s+ `setxy random-xcor random-ycor6 }- ^" K' L5 |4 k- m* c
set trade-record-one []
" P( B7 w2 s1 o1 f
6 A( x, Z: @' Z1 K1 K; q
set trade-record-all n-values people [(list (? + 1) 0 0)] & X. G: o3 d0 X+ h! j* k' J

% b8 ^1 \1 {, ?# o6 B) hset trade-record-current []! d- n1 }3 {) J
set credibility-receive []4 L; u+ B$ k3 c  d9 u- U
set local-reputation 0.5
0 _% h1 S8 k/ \2 h9 E6 _set neighbor-total 0  A. C; ~  h& }% D
set trade-times-total 0
$ p9 Z' \4 m+ u5 x1 V+ n7 `' Oset trade-money-total 0
' T7 @. |% v( N  Wset customer nobody$ {$ P2 G3 H" L! y
set credibility-all n-values people [creat-credibility]
  I) G, M9 h2 V% {set credibility n-values people [-1]
2 S4 k, L6 o- H! q; g5 C$ l: oget-color
( E; `) v, b8 t

* K' O- r9 m  L2 |9 Hend
+ a' p  w. B1 K1 t
- W& L9 T" ?8 ^' Q8 Jto-report creat-credibility
% R" [1 T; Q( y) J8 R& }& creport n-values people [0.5]* j  F( C$ g& H. r' y
end
. C& t. W" p3 B0 y+ x. g6 R
( O1 `8 r. x% F% ^to setup-plots
/ J1 U5 ^+ q: G8 H% O5 l2 B8 S
( V2 A' ^/ b6 Q4 S* A; @3 |set xmax 30
& W/ N" A; ?7 W8 e# y6 K
8 Z. E. ^5 g" c# c
set ymax 1.0
' A. q. ?9 o; \3 G* M

! g0 C& g! M" w. Tclear-all-plots

% u3 C/ u4 m  r: A+ ^/ n- z* C! P* h: s
setup-plot1

7 p7 \: y6 j6 X
5 {" g. P% P3 T3 Dsetup-plot2

4 M; G0 L7 U5 W( U
1 x& e: }' j( esetup-plot3
  r3 s3 y/ }1 {6 d5 r9 O# j
end
- Y+ G/ U2 t/ s% ?6 ]5 _4 P' u, H9 a% v, ^; U% N% i$ J1 U" @
;;run time procedures1 N' o2 \7 R" N4 V6 |3 N

! a  w8 q! x/ c4 U$ i$ _5 C, {to go
0 g* t) a, Z4 `7 m2 S  `, B
+ V2 F5 c/ _3 J; L, c: `0 Fask turtles [do-business]

, u1 u) q; b! ]' e* B1 X: {7 Oend
4 h9 e+ i% E! q( `5 Z7 _0 m, N: `+ [+ y( `: _
to do-business ' p$ d- \* @1 W# E: I
; y/ r1 B2 T( L  o) {

+ j! A4 h. O( q& Q, G2 L, krt random 360

* Q) u$ ~( X1 j
8 J* t- w* T" e' a: i  V1 Jfd 1
) D2 j0 n- d3 l3 `. `! [

3 p) B0 q# `8 S! p) q3 D  F% l0 F, _4 Iifelse(other turtles-here != nobody)[

( h8 k3 `( K* Z1 T/ ^. _
/ s; e; g& O  W$ s# aset customer one-of other turtles-here

9 e" L+ M9 F6 o4 t  Q) R; f
; F  O* k* ?% Y$ F1 k% N8 a;; set [customer] of customer myself

( y$ l: C# m; r* b, Z& B, y' k$ O- F5 ~0 c5 \+ H( s6 w
set [trade-record-one] of self item (([who] of customer) - 1)
; \) L  |0 D) b+ c" O[trade-record-all]of self6 h( Q3 q) @- y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ S' e6 F. h6 t7 S
5 W  B, [5 V4 j
set [trade-record-one] of customer item (([who] of self) - 1)
) ?. |8 J! ]0 H( Q6 H; @: @[trade-record-all]of customer
; r2 b" ]+ J, [, V

0 U. g* }& e. d" ?& N3 W4 E# X$ Wset [trade-record-one-len] of self length [trade-record-one] of self
& {  F% R% \3 R( y* }8 ]0 K9 E  B
; |& U* t* \8 I6 |+ e$ ^8 w9 S% D
set trade-record-current( list (timer) (random money-upper-limit))
/ E6 X3 m! c" j8 \; V8 a, U

4 |5 _; M8 @. ?. e, h8 f( Vask self [do-trust]& `" P$ C6 D2 z# @. Z
;;
先求ij的信任度
# \" S% [+ }8 [' c/ ^) `: N" p% _1 }' y9 ]0 C- H* \$ X
if ([trust-ok] of self)1 Q6 L. ]' Y/ H, D/ u1 G& D0 M
;;
根据ij的信任度来决定是否与j进行交易[
% Q3 D2 w- s$ Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, z7 R# {3 O0 U0 ^0 Y( X8 ~) F& R8 _6 f" }
[
& v; O  W) d/ U/ j- c: X' A
6 ]5 C9 a+ x' c5 H7 n
do-trade
& b5 f& K3 y6 r9 j0 W" E3 G9 {

7 o' j( ~7 V/ Jupdate-credibility-ijl

% p! a' Q" k# c! {9 t% F& G9 {1 Z8 Y' ]9 N
update-credibility-list: G* Z& _/ M  G8 o
; k  T0 @6 B& j0 g2 R! ^

3 ]5 C, {+ C. d6 ^0 iupdate-global-reputation-list
2 T; E+ U& N5 ]2 f# E6 G
# R) D% k8 u# E1 P* B
poll-class
) [) U% v! i$ U5 K$ l! A" Z

0 H1 @' _% V+ tget-color
1 h3 I& Y4 d0 K3 t
% i' [5 {& g9 f0 F0 u! ~+ }
]]
( [" R6 J" ~2 t# o7 X3 [, r' C. {. Q* V! ?/ r. e
;;
如果所得的信任度满足条件,则进行交易
% v0 v" N. r% b  x0 `! _+ ]% W% E) [" u0 i3 X! `& j# Q& f
[
* A" ?, k3 ]4 m  |
/ Q2 t! y( y  l" k  o  |0 Y* k% X& Z
rt random 360
! l' |/ |" n( I# L- h( ~
2 A+ `% p+ Q7 }/ u1 v2 @
fd 1
* N# h; k2 }! c  J" W+ ^
0 p7 T) |& F2 P9 F
]

; d  A& Q* ?9 u. T
* A8 w; a% R7 F+ ]2 o* z3 qend
( Y" d7 m$ X& D" I

" v% G2 ~, S0 ]& F- eto do-trust
# \* w" ?  [8 K5 w8 R3 E$ @set trust-ok False- T2 L. q2 y1 ?: K% e
5 w& y7 }8 Y& u& L1 B4 w) C
% S* \4 v7 I) g
let max-trade-times 0
# N+ m( a  |2 w' y: `foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) X6 x1 i: D, e0 [% G$ @! c
let max-trade-money 0% `% K; v: x& i0 i6 X- J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" k* ^/ d/ B9 B$ C* {# S) k, L: G
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ B( _$ P) @0 {1 F$ }/ O6 [5 c  H: ~4 g, R- ]  m9 ]% d
$ g# j3 I* Y7 S/ k8 M* f, c/ u
get-global-proportion5 U: b4 _/ {8 W
let trust-value( c$ H2 Q5 m4 Q6 O# d/ \& o! E
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)

3 v( g  B; @7 i( n- i8 sif(trust-value > trade-trust-value)6 _5 u0 Z' h2 l8 [( c1 Q  w
[set trust-ok true]4 o) w2 I+ c, Q1 Q3 ]
end. H- F9 j% [$ V% F

' F9 H+ ~( R: O1 oto get-global-proportion
. P) R/ O, ?+ Q8 v4 Aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ F9 u. D3 [5 F/ K9 k
[set global-proportion 0]5 V. }" g9 O- ^$ U, K; `# A
[let i 0+ e& \' J: R3 A" m/ o
let sum-money 0
# D. k0 p7 i9 H1 e; P1 ]1 U: _: ^/ e- Owhile[ i < people]
  I+ l0 i: ]" O) _5 @# e[
, U7 e; t: h1 `4 P; I2 I6 K( hif( length (item i% a6 j- ~4 H" k$ d9 I' J
[trade-record-all] of customer) > 3 )

. N" M# W' C; I" |[4 V+ a7 H2 ^1 Z! E- z- ~; z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& {% v! p" r2 s( ]1 B
]
, u& [# P' l  I$ U3 H]  Z* Q5 ~( ]: m. O- y. W" A
let j 0
' z6 L1 w7 f* h, rlet note 0" A- e: Q9 |5 r! ~7 p' E' i- d. c! ~
while[ j < people]7 q* T# k3 o! T- ?, `
[: h' U/ w( ~) x' ?: E
if( length (item i  I2 i0 ~/ L: M) q+ Y7 m& w
[trade-record-all] of customer) > 3 )
! h5 o7 ]( X$ H9 U
[
  N; u/ ~7 T, ~( s4 q  difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ u( n- z  f1 x0 I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ d, u( O* I& P( I: p2 p/ e
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) K& W" `* j$ {4 U+ |]
, S; V# G' h3 x  `. Z4 Q]7 g( w- G! C# f. I- t
set global-proportion note
  P2 |! m5 y4 `]
, N. j0 p; b$ g+ q0 n$ L3 w0 rend
0 q$ b; F# g7 u" T% V2 {) @$ f7 P! M, \* B% ]' f0 `; {) p
to do-trade/ R. t- ~  W! m* k) u3 p0 m; n7 f
;;
这个过程实际上是给双方作出评价的过程% ?4 r# \$ S# [0 z# v6 x$ W4 k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& v0 B8 C4 [" S6 u* I) y: X2 j. A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 u- i8 W6 z% `) f# N4 J5 w) L% @
set trade-record-current lput(timer) trade-record-current
$ `1 l  o: K, p: u;;
评价时间& w. T5 T) i& S# J) X8 p
ask myself [2 I0 K7 N; ?  Y9 Z
update-local-reputation
5 B1 \+ R7 w' R" b, {( q+ l9 v& B8 r4 ?set trade-record-current lput([local-reputation] of myself) trade-record-current
) S2 M* J" G/ S6 Q, G, m8 E1 {/ j]
# g8 ~1 Z" Y  s8 @1 G, b( ?8 fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, s+ `5 u! x& |* q  n
;;
将此次交易的记录加入到trade-record-one
- u2 ~3 ]6 p4 R/ yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* E  @& B0 F/ _/ ~1 x: B9 m7 p( W$ Y0 Nlet note (item 2 trade-record-current )
6 g- U1 B! ?+ Eset trade-record-current/ N* |/ t- i! I- e8 h; V" Z. K/ }
(replace-item 2 trade-record-current (item 3 trade-record-current))

' b1 B' m) X5 a6 O: c2 o, I" n) r1 h2 E! }set trade-record-current
5 [2 R. l8 |. a! M+ u(replace-item 3 trade-record-current note)% n5 ^8 X* q& o, A% V

, P& l# M/ l, f& x

2 }$ H1 a  }9 F. t, n; gask customer [
* }# J/ R9 X1 [- o# k. q. iupdate-local-reputation
: Q* H' T- \; |2 B2 O" eset trade-record-current
# L* f0 a2 S1 s% s+ e(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% l4 f/ O+ V" Q0 s]
* \% }1 R$ g0 d( W3 J/ ?5 v0 E/ U+ V$ F9 f8 b( r
1 \2 m" g) d* u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ {, _8 `- L2 w0 U, J& q$ k& B
) y9 q' Y! q) p, J. q5 B! c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 n7 p* a; h- t2 O! `6 F, K' a0 N2 ~! T, M;;
将此次交易的记录加入到customertrade-record-all
! D3 y& y2 g2 S. i* Pend( b- G+ k3 u; Y! R. v
6 W: i' |$ I5 O% M* y
to update-local-reputation
% }. ]7 d5 `2 }5 x( Tset [trade-record-one-len] of myself length [trade-record-one] of myself/ ~+ ^; |; D! {4 C7 G/ k
' ?5 I1 R4 ?. @0 u

" j; g$ J: Y) N$ O7 t;;if [trade-record-one-len] of myself > 3
" e8 p# f2 b: j* M  }4 M* a% N$ }
update-neighbor-total
+ K% c  M2 y3 };;
更新邻居节点的数目,在此进行
( d2 `0 o; B0 g1 D+ s, }2 Zlet i 3
+ Z+ x- S# A- C0 t" X  \let sum-time 0
4 i- ~6 ]+ y( H+ a6 h0 d$ E  Wwhile[i < [trade-record-one-len] of myself]& Y9 o" d8 W5 v7 k& J$ x
[
0 {$ T# N8 J* E: ?set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 _  W, x# y# e3 B; ~5 b- Nset i
) G0 t' q) w' c8 v3 L6 n$ N( i + 1)

' L% u1 B, S6 @1 W]
; k9 i1 r7 ^" q2 `! nlet j 3
. W6 g$ ]& R3 X$ W6 Z3 C0 {; wlet sum-money 0
# }$ e* @+ z/ d2 `3 P  Zwhile[j < [trade-record-one-len] of myself]$ s: D# m* @6 m1 s3 x
[$ t* z2 O+ L: F* _- e1 U$ L
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). I8 m% O  G& \- x- f
set j
6 k& p) i: L) Q# J7 C- e$ k7 o( j + 1)
, Q- M3 e' m7 O) m2 m8 m, X3 e3 a+ `* Y& F
]
; d& x5 H7 k( v/ C, U6 v$ C1 elet k 3# c0 L$ W+ u! s9 B# _3 B" n
let power 0' Y! I$ T2 }2 s, }' E6 O& ], X
let local 0
, C( b) S/ v1 y  J- Wwhile [k <[trade-record-one-len] of myself]
$ W* X7 A* q7 J* f* T, {[
$ s1 ^1 l, _$ T. Y- a8 M3 v4 A% w, Qset 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)
5 }& s7 d$ n: S& D* F, ~6 xset k (k + 1)6 V/ Y3 E7 E* G- p3 j
]
" e/ v7 u* I6 i* k' wset [local-reputation] of myself (local)! C" O2 o3 S5 J. s! W4 ]5 |
end3 m4 x, @# k5 S
( @: J, C: ~* H3 B. [8 h, J! ]9 [* i
to update-neighbor-total
3 N" m1 u; D- S
4 J8 x; i" W/ ]8 m/ }* X+ `  y5 R1 Nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 w' y- g, v0 G- K. J+ v& T

( D% `* o  V7 T# `+ o+ F2 \
) {9 o$ A2 ~" b5 O0 z
end
9 P. d3 C6 C& h1 s3 J; l4 i6 h0 `3 z5 b
to update-credibility-ijl 9 {& n9 j- h% i4 {( ?; ]
. Z4 O$ p, E$ P: M6 X/ Q
;;
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。$ y) _9 d9 z/ I/ `3 N
let l 0& n( S! r1 ]) A  q3 k2 z) J1 H
while[ l < people ]3 ?+ ?5 J' M8 `5 `, J( K
;;
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
$ ~7 N2 \2 U0 l7 W" _[
$ d% h' j1 `+ @/ \3 C, Rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 m' I- H  U  U& f
if (trade-record-one-j-l-len > 3)
' v+ ^/ k- p/ v+ O" q( L[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
! O' Z5 ^# y' V9 \/ v1 Clet i 3+ R. q/ O& A  t# [0 E
let sum-time 0
" R" m) s( `9 E9 I4 nwhile[i < trade-record-one-len]
  h6 N/ M& E) {3 ^[
. @1 i; h* `$ W" Dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ m1 ]" a2 @8 ^1 O, f" Tset i
5 J3 \2 e& {1 l' z( i + 1)

+ L& l* |: d( M1 `4 `' l1 A]2 u+ L! u* z3 \  t
let credibility-i-j-l 0% s6 n6 F5 l, X3 K5 ^
;;i
评价(jjl的评价)
5 E4 {! g+ w' C+ s* A  \: `let j 3
" z8 T4 r2 ?( @+ J; }  Zlet k 4
- @4 G1 f6 e4 |while[j < trade-record-one-len]
& `' Z6 X7 }9 [3 |4 c/ h( C[" `8 N" O- J; |) ]. Q9 W
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
+ h& S: d  U$ L+ h% A# [+ P5 `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)
4 I' t/ M( G& ]2 X/ w2 Z& p, c% Jset j
! p4 ]* r% _6 S  j& p# h( j + 1)
& o* B! Y( f5 U# w( S) W2 y: {
]
4 |8 M$ L5 A, ?! s0 vset [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 )); n! }/ g: [. _2 L& \/ P' c! W
% N' m3 u; F1 c& I% v% d% K

7 N4 D( ^  {+ C( t+ jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 a4 _" K7 B- \
;;
及时更新il的评价质量的评价
: L/ R! _0 w3 g9 y: _9 cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ w  K: T3 D# \( dset l (l + 1)
0 L. s' v" k# J6 [0 C3 c& i3 q]4 T1 M: v% r' @& ^& j- U
end. V  r$ N$ |/ H* l! q
1 V. L, p! b+ j6 x) L
to update-credibility-list3 g6 Y8 r* h" y8 U% k) E
let i 0
5 ^! A4 k- X! Bwhile[i < people]
- E2 j1 {) e! S* ?2 R( E2 i[
9 g7 o  ?  s+ W5 r/ X: m( wlet j 0; V8 M+ E- E: T2 M
let note 0
# f; R) N4 f9 y; q8 }# l/ Ylet k 07 a( L1 N- u$ Y0 b! O
;;
计作出过评价的邻居节点的数目7 i" u; i/ u. O4 V* C
while[j < people]- E5 E" l/ v: Z6 q( R* T3 O9 h$ ?; t* w  y
[* F7 l# Q5 w1 L: F  n
if (item j( [credibility] of turtle (i + 1)) != -1)
1 X" a. l7 E" ~7 t7 q; i;;
判断是否给本turtle的评价质量做出过评价的节点9 l! u8 O; y2 Y6 u& u  r
[set note (note + item j ([credibility]of turtle (i + 1))): K6 ~  f7 G6 \9 W" J
;;*(exp (-(people - 2)))/(people - 2))]

1 c: @! C% e) H) V7 hset k (k + 1): |- b3 r. Y, Q$ N
]3 M9 v, l% D( t* T9 I
set j (j + 1)8 z% n, R# x* p: Q- h6 v
]+ |- o+ |7 X# }) F5 t. H5 ^
set note (note *(exp (- (1 / k)))/ k)0 a. k) t3 l$ p4 m3 {% O9 l# Q& x! u
set credibility-list (replace-item i credibility-list note)
* `& E3 ]$ D) R1 w: W: Y! }+ oset i (i + 1)! J3 ]  P9 e% H& [8 i7 t4 p& x/ {; V
]( X  x: a' J' [
end8 q+ L8 T9 ?- o8 y

# Z; N5 V7 E; r$ o$ zto update-global-reputation-list
4 ]: i6 E3 Q: }let j 0
7 a% d7 L. A& ~. a1 a' y7 C1 Pwhile[j < people]
% F1 R- [" a+ M& Q: ^  S[7 l4 g$ t$ F& F/ F; C! p
let new 0
# a/ t' l9 s$ G  {( l8 p' S;;
暂存新的一个全局声誉
& r7 i9 X$ I: E) S3 S& o8 B; I5 @1 p% E( X/ ]let i 0
2 m5 L% F# K0 P6 T7 P, hlet sum-money 0$ [& O% z  N9 o. N/ w
let credibility-money 0
3 T' ]! W$ x. |) \" d4 E8 Gwhile [i < people]' e8 w! R+ i3 s6 ~! S
[8 m0 h& V$ [# I4 V
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. Y) {( v6 K  P: Z  Z# j, Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, j$ K/ U. f- f! t! E7 Aset i (i + 1)/ X  h! [8 B( M4 i- M& ?
]# F: s, c. e8 S  I) y
let k 0% L1 i' U& l8 y# U- Z6 G* V
let new1 0! ]  r  Q  O$ d6 p! ~* ?
while [k < people]
+ a9 s4 L$ D0 I5 j5 t6 F. F[
1 g, z1 B, a4 Y: f" Mset 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)
/ _: ~* B! |, o. h1 b- b6 lset k (k + 1)) z+ M9 q  T1 |, `7 u
]
( W- c& @! x' S4 B9 V$ `set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ K7 x% |; ]& w" R7 X# o  H( u0 iset global-reputation-list (replace-item j global-reputation-list new)$ g/ ~/ c# K( {" f2 Y
set j (j + 1)
1 n) v$ s% U+ `6 z+ P# \; S. ]5 T]
7 d9 _3 u/ r5 y& k; P/ Iend' E, J$ u' R% ~& a  }' I  C
2 g+ K& Q' h$ S$ K4 J

8 K9 I0 D$ j% c1 K8 w! h& Y  ^; [+ _. R1 B  Q
to get-color+ j* x1 a2 _! B$ C/ Q! p

: e1 V4 _' @' b9 c" m" e" z2 B2 nset color blue

9 d! P8 S* N8 y8 Z8 c) M$ Hend0 w- R6 j9 J8 \4 `( G5 N
* J2 R2 Z2 {  i
to poll-class
0 P4 |9 ~6 x7 L* @: g1 o4 j. ]. Q8 Send  y4 C% J2 v* I% q$ |4 G

: _9 n8 X# d$ K+ g& Lto setup-plot1+ r/ d# P& T5 b( b- B, x( ?9 K

) t+ {% v; N/ R, sset-current-plot "Trends-of-Local-reputation"

" a9 j4 z! e: C
& u; e% m! n! ~$ c" M8 C" Tset-plot-x-range 0 xmax

0 r! n) X6 ?. |" h) j$ W( K
3 }8 J, P$ Y2 q; Iset-plot-y-range 0.0 ymax

9 c- e) t+ Z; A- G3 A, gend
& F4 O( N) k) U5 A( d0 E2 O' G/ n+ ~7 C: h- {! z, I8 E
to setup-plot2
! V% F) h: k7 O
' p: w2 n- P; ?: Z2 H# x# Y% wset-current-plot "Trends-of-global-reputation"
0 C, E. U. h5 V# L# t* o- K

3 `% h5 c0 _: l: I( W3 ]set-plot-x-range 0 xmax

, ^8 |4 U/ ~# e' ^9 z& Q, O3 P8 Z
set-plot-y-range 0.0 ymax

7 Y) ~/ W. ^2 G$ ], S$ ?end
9 M/ g4 I: Y& @2 x9 _5 [+ f% {) G! U: M8 x
to setup-plot3
' J; Y7 f: Q* `: k3 |7 y% T6 L/ a% T3 T1 r8 e
set-current-plot "Trends-of-credibility"

" c8 H5 W( V9 G; t3 s5 i9 M# |' Z+ ~) R' Y* S6 {
set-plot-x-range 0 xmax
1 _3 [5 q6 M$ \4 S) V1 [3 s
3 _" N) |6 g! P2 @6 z- y8 U
set-plot-y-range 0.0 ymax

: B+ `5 d. |. L+ M! I+ Yend. _7 T0 w% n) R: P& m  D
5 N+ |7 U" b1 l$ W( K" s
to do-plots' A. X, m6 M7 H- ^( R; `
set-current-plot "Trends-of-Local-reputation"4 i! e  L: b+ g  s' c
set-current-plot-pen "Honest service"
1 L5 G  c2 k* B0 I7 ?! w# Xend! l) g" ]1 I6 Z" ~6 X( h" I/ W
! n! o3 F4 w2 i) h- P  y. p! K. m
[ 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.6 @! y* L0 b: I  c+ Y2 y& u7 Q

7 ]5 B& J% l% r, R# d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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