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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:
( W$ e% I  S+ F& Z6 F9 Lto do-business
! d1 Z% \+ v5 R* q7 u rt random 360
5 W) n! ]' K( j. q! B fd 1
# C" w: l* |5 y( t: u# g( x: e ifelse(other turtles-here != nobody)[
+ M6 j$ r. i) J! @# t( f   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.6 ~- Q, U0 ?  G& ]# {8 Y! {" }- [
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 F' w( B! d( F! z! Y5 @" z6 W
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) |; h% ]0 E, e
   set [trade-record-one-len] of self length [trade-record-one] of self
2 L! y9 p" s* Z( T( T   set trade-record-current( list (timer) (random money-upper-limit))+ A0 Q% F: E  _6 P. C. m; V

0 q# u5 F) ?5 w4 j6 y# ~  J问题的提示如下:9 Y5 }' J+ \$ z

  [, h9 q5 F, A- Zerror while turtle 50 running OF in procedure DO-BUSINESS9 Z  ]9 [* s1 E5 @7 i) j
  called by procedure GO
/ H9 H% ~% ~- D5 @OF expected input to be a turtle agentset or turtle but got NOBODY instead.# C/ [. |" ?8 N4 C) _
(halted running of go)% \% C' q. w' ~  r. E: G

2 O2 `& ~3 J/ m0 j, ~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~~) n: r3 S" T1 Z. u8 m$ a
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& t, O1 S$ j2 }. n/ x: r
globals[+ t8 B8 t4 Y+ ^+ a+ Y5 D. t
xmax/ k" }' [. \3 E8 g6 o+ @
ymax
6 |2 A; Q0 u4 E; rglobal-reputation-list) z- p, W* w& n+ H, K7 n  _$ c

/ I& r/ o" _; f# N# u$ q# b: ];;
每一个turtle的全局声誉都存在此LIST
- B# ^, C" y. I: w& ^+ I, Gcredibility-list
  g2 v! d3 v7 D( J+ B;;
每一个turtle的评价可信度
/ S% g$ y1 E5 l$ b) J5 _; ihonest-service
% m% R( l6 {; x& k. Eunhonest-service/ |& v7 M, w0 e, Z, \4 X4 G- \+ u
oscillation
8 S7 c7 g( v! \9 r9 Hrand-dynamic6 s8 H# z4 L- k
]: T5 n& Q# ~1 X, j, O
7 F6 s% @; D* \7 \- s
turtles-own[
& B0 s9 v! x+ L3 Z; t& otrade-record-all
  m0 g! x# r( {+ q3 b' P; e. l;;a list of lists,
trade-record-one组成0 C) y' n( E+ i: Z* A! F
trade-record-one+ {5 N( ~8 T9 J5 S: o" j
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) E; b  J3 G* Z! L# X4 a
5 E' d) y/ v4 {: E2 m' s0 A/ L;;[
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]]( g% }! ^6 j3 t9 p' D
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]
0 K6 r7 J* A( A# acredibility-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
/ p& s6 ]# {1 m6 J) S" u1 Cneighbor-total3 H+ Z4 i2 A6 f3 q
;;
记录该turtle的邻居节点的数目
. E; _! u: {7 K# d4 m3 F5 x0 Rtrade-time0 ^! q; f/ ?3 ]- `6 m, g' U
;;
当前发生交易的turtle的交易时间  W0 `$ g! I5 Y5 f  y+ v
appraise-give
1 p8 H( L2 Q$ M8 h* u;;
当前发生交易时给出的评价$ h2 d4 i% F1 ^5 @/ O( G- M
appraise-receive
& ]3 K; }- e$ y" q3 W) I+ o; G! q;;
当前发生交易时收到的评价
% _/ q9 K9 K: G3 K, Q6 Tappraise-time+ C: G3 N0 l( H3 v1 J. f- K; k
;;
当前发生交易时的评价时间
# y; ?+ Q7 u5 M) ~local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; u2 `- m7 Q- @9 {trade-times-total
: V$ V8 E2 d7 L  n;;
与当前turtle的交易总次数/ z4 O1 u# b4 ~, D8 F$ ~" X
trade-money-total1 `1 }, Y3 H) ~# f2 p/ L0 y
;;
与当前turtle的交易总金额
4 _9 A- r0 d( S9 k/ Q% X/ s0 slocal-reputation5 W* h/ ?9 V" j  n4 B0 i/ M' s8 ~# \
global-reputation
4 l/ e" j# ?: a' i" i- U1 {, c$ J, v- O0 Scredibility
7 t, k1 v2 `" V3 ?# G;;
评价可信度,每次交易后都需要更新
6 u) h2 z# V% ~8 O8 |6 xcredibility-all
" i) O8 V( Z) Z1 M4 u;;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
3 E& i# D) N$ z( U' {2 f& \" l; `8 u% @4 H0 {( n' |
;;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0.52 r* m; e$ K6 p3 I7 E7 a2 t
credibility-one
* j! n. `0 t: Q9 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people
+ A9 m: F3 t: R. Nglobal-proportion
. k0 }' `0 b# r# a6 zcustomer
5 E  W! D1 q7 d& P# r- i1 pcustomer-no
( A, n/ [9 t  \/ G6 R, M, V% Z1 R6 ?5 k3 ntrust-ok2 ]+ V. x& e0 j# C8 I3 O# d* L
trade-record-one-len;;trade-record-one的长度* `3 T- e1 k* x% e
]
+ L2 r' b# ~4 X5 F3 y
( g* U2 \% h* [) n;;setup procedure1 v' d/ j, \! H' L8 f
4 M# b; o. A' ~' y
to setup
, h  H, M" T6 X% Q$ x; \0 Y8 z! h1 U3 T% }$ I3 G8 ~1 l
ca
/ e9 a; o9 ?5 p  Y- r  d

. O, B0 Q& y* i5 Jinitialize-settings
! g# w6 R3 K4 \3 U2 F$ h7 W

' `3 U8 `5 }( O, Y, Q2 J! v' @crt people [setup-turtles]
0 d1 r  e+ D! L0 p! ~
3 P+ v/ ?, g9 V4 H0 o8 S
reset-timer
% o; ~6 m1 a2 Z2 y7 @

, q; f! R9 ?% r0 e( g7 Hpoll-class

% Y; `% r1 m7 s9 N; p5 X9 n( a7 p; L6 v; q, d* s  x, }
setup-plots
5 v1 b+ b7 \9 d4 d" L7 G2 h2 r

5 Q. K) m9 m" A( Q# x* a( e+ xdo-plots
+ d  v5 v$ E& J2 p2 P- R! M
end
0 z8 \7 p: F5 C0 w0 A0 E$ y4 @' Z# l' x6 H% c6 s  O
to initialize-settings
/ Y' z6 K  z& @1 q( A8 T9 v+ I: N; w+ W
set global-reputation-list []
5 B6 Y$ _3 K% Z. W, `

/ N' q3 q8 A; C! }set credibility-list n-values people [0.5]
0 `, E8 T, y8 L9 m! R, _
, B: W: B5 o! h: S. E# B
set honest-service 0
9 R5 Q4 o% y$ G+ J- _! `* G# T! J9 V

4 J2 |, t% \) ~" a9 sset unhonest-service 0

; R7 Z/ Z7 ^7 s- Z# P4 c5 n$ G! g& a0 v: e
set oscillation 0

" q) S+ z& p/ c( Y4 j4 b, M! H
) l" }5 W& ^3 |1 xset rand-dynamic 0

% S+ Q' \, n: X2 Fend
. w- C! g* v+ E6 o! o
, h+ Q1 t  ]& q& e/ b6 ]to setup-turtles * t/ [0 @( d- T. A7 @# c
set shape "person"9 g. V. {% n! H7 `
setxy random-xcor random-ycor3 F1 \! o5 Y) \& h$ H. M6 j
set trade-record-one []
$ ~& q3 O8 _7 i& C

# v! W" H9 s; Wset trade-record-all n-values people [(list (? + 1) 0 0)] 5 C5 s5 m9 i+ s8 z2 n

, M% _8 P4 d5 O: i: d2 S$ r/ K0 W9 jset trade-record-current []
! b. E  D! t- V- jset credibility-receive []
3 o  H' {# v$ t# L" Kset local-reputation 0.5
- n; }  l: h) ~set neighbor-total 0+ h: }+ L, v6 H  X$ e# f# j6 F
set trade-times-total 0
1 T$ B0 u: V8 c7 k% U( sset trade-money-total 0, o4 A2 A, b3 ^* H4 }; k
set customer nobody
% j6 u) u) {  J+ a9 _; A, Oset credibility-all n-values people [creat-credibility]* x  j. Q/ N7 K
set credibility n-values people [-1]
0 m0 r' {, t# H; D, Eget-color! L+ b- |1 }. T' i6 G- O2 {9 H
$ f, m5 f  \# x. ^4 N' d$ y
end
8 ^4 W# G$ J( U+ {- @' z* x: b! ]; U! N+ K( |5 i. c
to-report creat-credibility
$ m2 |1 M7 x; W# n' g) ^report n-values people [0.5]/ U) p) C8 o4 ]  |# W# K& B6 c
end
+ \0 S" ?" d7 \7 V" k0 |8 W2 [1 y7 L3 Y' n) `
to setup-plots/ f. A0 G. D2 @$ p* ^% O& v
$ M5 Q5 J/ ]3 V% v" r2 k
set xmax 30

! l- w5 X3 c7 D: F, }' n; k
8 I7 ^- [4 l8 Q7 m( a6 C, Lset ymax 1.0

, Y9 q5 ~  _) B: T, p1 X
9 z' B% [  x& G: Eclear-all-plots
; t. a( M* W; a  S. s+ e
( }4 q% V& m- d; Y6 S( p
setup-plot1

7 u8 I/ P: _- Q6 n: i
! e* |  g6 ~: a. u! n! Asetup-plot2
$ T" O, m) [7 {6 T0 c
0 p, `- J9 A1 u5 W5 y4 ]& n: r
setup-plot3
; v% q9 `) y' C! _) A
end' O# n" P' H- U  g) {- A
& n. K- w" |% a
;;run time procedures
& b  {0 M: o3 I2 g* o" K" C: p9 G) }2 c4 \1 K
to go
& A9 _/ m7 r* g: p* f0 [9 N0 k7 q$ g( ?: \2 G9 M+ J
ask turtles [do-business]
' s9 T0 L5 A- y- w% d
end2 D4 j& x$ b) }

4 Y! w" U, ~, Ito do-business ' F1 ~( ?0 @- v! [0 W  n; R
6 w! m1 s6 N, _+ y0 W4 {3 n

( ?+ ~5 M8 D, g2 n0 [rt random 360
: w0 T: ?) y8 ~3 l/ ~- ^# z7 z1 O

& F: F- r8 w( o4 C# K# B1 N# M& Qfd 1

: |; O0 L! `3 }' [6 Z7 f2 n0 e7 f
8 i6 b  v" i  }1 @3 I$ Sifelse(other turtles-here != nobody)[

' z6 y; i2 ~% d( n
5 N5 `& @& P' _! O1 X/ Lset customer one-of other turtles-here

5 ?, l3 q+ q6 f4 j9 f1 Q* A1 D
! Z% i$ V, I# e;; set [customer] of customer myself

7 d+ P4 a5 q) y0 }* B/ u! N' ^8 I  g
set [trade-record-one] of self item (([who] of customer) - 1)
8 V: M% R( I- {3 U! R[trade-record-all]of self
) X" f* T# D: |) G, a/ G, i' z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* j6 n' q8 d! ?+ U6 N) s6 ]0 ^; k) v* T" ]  E, O/ U
set [trade-record-one] of customer item (([who] of self) - 1)  u1 D# Y9 K1 C9 i. F  C' ?9 T. B& S
[trade-record-all]of customer
/ b  W7 F: M- J7 T2 `

" j( H7 r' R, _2 q* v! S: rset [trade-record-one-len] of self length [trade-record-one] of self
. V6 o' k5 }# Q1 H1 J

/ t; D- p  @' Y; rset trade-record-current( list (timer) (random money-upper-limit))

6 t6 W" O4 r* s$ U0 w, ?/ a) {: F* ?7 E" y
ask self [do-trust]
) ]9 ]+ l  p7 \2 ?" d+ U  |/ H$ R;;
先求ij的信任度: O& B) \9 F! T0 n* |
' N2 U: j8 [2 k/ q+ {! d
if ([trust-ok] of self)
' K6 @$ l2 D1 ]  [9 _;;
根据ij的信任度来决定是否与j进行交易[+ B7 S( @8 w3 A# E
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- a+ X+ m( p' c- S- D8 l

" C% X, V% P: W[
+ V' |" M6 ?7 M1 h
7 Y" ?/ H; g1 J4 M
do-trade
) A$ u2 r3 V) N
1 {9 }) x1 {: n' t' W' K
update-credibility-ijl

# E' P' n) F3 ~8 F4 G2 ?# {4 K* E5 [! O6 O' A; H. h& G
update-credibility-list
8 ?  B9 C  B' X8 Z! w" e. W2 H7 _8 u

. m: ^3 |( q' S1 I
8 A3 S5 r; r: X4 d6 a' Y7 N# N; s1 Nupdate-global-reputation-list

: E) c$ L1 o4 @6 X  Y
+ e% _  F1 e, K8 Zpoll-class
& K* C" o! {2 B+ X
( j, N/ b; Z: Y# ~9 J8 `% ^
get-color
( D9 ?% m" f8 \6 r
& D9 a. T" L9 M# N; ~
]]
. d7 ~7 Y* @9 l9 {- U
( s9 j; n+ S6 B) s. g( w+ [;;
如果所得的信任度满足条件,则进行交易) L! {9 V# ]1 S# r+ Y0 Z; z+ m+ H

2 f! i+ e; _& X) U; U- S[

; @' @" `# m1 }6 D: }5 X, M; y, y
3 H+ _) y* t# u9 w9 J) Srt random 360

) j3 \% C& k/ I/ m- q( d1 Q
2 k, ^6 d- a+ pfd 1
5 L' `4 p2 W) G+ E% e- l; ?4 X

! ~/ X- j  }4 _, R; e4 h- b% l]
8 P  _% V3 g; w3 g
+ a% ]+ b( `* ?) ?2 e
end
! d$ S9 o( G2 x$ E8 D

5 ]9 o$ i, j3 P( O7 ato do-trust 6 r' n+ c9 n, q; j9 w9 D( {
set trust-ok False
4 c( B: \" w; X8 k5 P  m8 A$ M/ S& T; k( Q' `1 |
' ]$ a3 @) h  w5 P" f& v
let max-trade-times 09 P( |* [# ]0 F7 V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" f2 `) S/ Z' A* _) L1 Flet max-trade-money 0- Z8 d5 O5 ?* h$ d1 M# |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ x' U5 n. Y1 s! D' Ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! y) o, A: R$ j# F% L' T# j

" W+ Q3 l3 f: W8 \- Q
+ G8 K2 p) h( V4 y4 s! t/ {8 a+ s  T
get-global-proportion. H4 d* p* _6 q% l0 j' f
let trust-value
/ p+ k7 I3 W* Xlocal-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) u# Q; M( \2 G- V
if(trust-value > trade-trust-value)
5 I! W" s* p9 a" h, E0 s9 k: Z( O[set trust-ok true]
  Y+ R8 f' U& i! I. eend
/ f6 r$ {# P* O* ^9 V8 d' N: k# R& O, s2 D
to get-global-proportion
5 |0 W: D+ S5 e) Difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 \5 [) J% D* Z* `9 v6 ~2 ^( j! G' k! ~, o[set global-proportion 0]+ J6 u- w3 b. Y8 V# ^
[let i 0
6 B2 P, }2 o% \7 m! N- P7 o4 Jlet sum-money 0
+ x, ?) f1 S9 S! X. Y7 Jwhile[ i < people]* r) N. e7 M5 e5 P8 @/ A
[
* a8 ?8 E7 q9 W0 ]" C' Eif( length (item i( Q5 u3 @4 a2 s9 o; }1 m
[trade-record-all] of customer) > 3 )

  P2 _; T" y+ a( \0 h# \5 Z; |[
5 f( s7 _& q+ X" E9 P8 Pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 u9 v2 X  |, ]* q& c9 w) S3 D: \]
, l: |# B6 a  _& z5 r]' w6 \4 ?7 b5 r8 o
let j 0
$ j: F" Y( \$ D" tlet note 0
( E- B5 r. O5 ?7 \5 z' Ewhile[ j < people]
5 z, O1 X9 r5 N% L[8 T9 P# U7 I$ F, Y4 r
if( length (item i
3 t/ q9 _" H( U, O[trade-record-all] of customer) > 3 )

% m. i! U$ T6 R" a% [4 G[
4 w, [1 ^7 o, ?0 Kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ I' A/ t  `4 i2 D: t( V[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 n3 e8 Z: w: [" R[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 n- N, X" H* s# A7 K]" @9 e9 v) g" a$ |) H, f# z
]
2 j* ]7 D  [0 A8 Gset global-proportion note
4 w# v, b' K! `# ]  J3 J]7 _7 p% m/ H; H( a
end! X/ `- k% z9 k, N  u( r: o# m
; M: e1 i) Z2 z
to do-trade
# R7 x- O4 ?! P+ [+ q' j;;
这个过程实际上是给双方作出评价的过程. ]0 T) n. z( V( T- m+ c! }" o3 p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 u4 x5 `! @; }! d) v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 k; c3 v( W2 j8 gset trade-record-current lput(timer) trade-record-current4 K: b: O# c& p9 l* R7 \+ H
;;
评价时间
8 j9 Z/ Z$ j7 u4 N8 zask myself [
6 j& m8 |, z8 Z2 h. Mupdate-local-reputation( w" ?) ]1 i" |$ c; u1 |2 k! H
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 D" q9 V4 F7 X, E& B9 j$ G0 l]
; r( I5 c0 V$ I0 L1 D  dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! I4 }2 E: q: f;;
将此次交易的记录加入到trade-record-one) N( M' _" N& u8 t% B0 L& j
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! o  f& b- O. e% V- x  p! X. l0 c
let note (item 2 trade-record-current )) ^9 v: i1 W8 k0 g
set trade-record-current( {! B, e$ n0 K' O8 T, U5 ^
(replace-item 2 trade-record-current (item 3 trade-record-current))
3 S# ?2 u/ d. z  Q* z4 _
set trade-record-current
" H1 E; x2 S- B) t. p8 @$ Q(replace-item 3 trade-record-current note). m# P* N' U4 w2 b. a

- y6 P" `- j2 P( M+ T

" c9 m) F& i5 A) a/ j2 sask customer [
1 J( Q+ O& U! s: D8 Tupdate-local-reputation
+ h" H; m9 z' y- n; Bset trade-record-current
; B" p: }* r8 A(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* f* x( [& {; t, Y' d
]
" E8 N' H8 e2 {1 M( A1 ~6 p4 X* }; Q0 i- R8 M

( I/ |( t% g: b* p& N  A) Sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& ?* ?+ i8 U9 U

' X3 p# `( Q% ?$ h1 S4 D2 Uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' W/ q/ I/ O  K$ ?, L* R9 C* R
;;
将此次交易的记录加入到customertrade-record-all4 A2 \: g( P3 }' A# D' u
end' }1 G  h2 g( C' V! j6 M* _7 n
5 b$ H' t6 t( D
to update-local-reputation& a! o1 k, e& ?9 r  s
set [trade-record-one-len] of myself length [trade-record-one] of myself
, `- l5 G  i. r2 \" n* m3 B$ m
0 I3 c. {8 l6 W1 h
0 A7 n" j; ^8 Z8 c  U4 t;;if [trade-record-one-len] of myself > 3
6 f* P0 ~% l& w0 u1 F3 b0 B
update-neighbor-total
7 M1 }0 _; R2 V& c;;
更新邻居节点的数目,在此进行
* n4 C4 Z; `( t0 c- L9 Olet i 3
2 l0 L8 x6 a; t3 O6 P8 Plet sum-time 0
, A, j9 @. I; B& b' V5 l1 G, C" Twhile[i < [trade-record-one-len] of myself]$ \6 [0 F8 t8 `) q( a
[, l; G3 Y) f4 Q1 Z% X2 e, e
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( R  s3 i: K- K) C* ~- H7 C
set i7 p, D/ R" z/ e% Q
( i + 1)

4 I: f  O& o8 O( A1 ]3 `]
% r( N  H1 c9 P) k1 N( Jlet j 36 U1 {/ J( a9 K* _
let sum-money 0: Y8 N/ u4 f2 P4 _
while[j < [trade-record-one-len] of myself]8 \; B/ I" X' x
[& u3 h) [; B. U1 C+ j/ N" o
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)
0 F  q; I# \2 E1 z5 q4 h9 Aset j
. e  }, g# U7 W( j + 1)
; U1 \3 v% X! l
]
8 T9 q5 R. y' v' j% E8 e. elet k 3
( ]' X3 N4 c: q9 z) v1 _% ]let power 0
  n5 B4 ]( a3 h; A6 X6 V% ~" Ulet local 05 M* c# @& A9 |! \2 i, B
while [k <[trade-record-one-len] of myself]* B6 X( z) i6 K( d5 k! |. T* U
[
$ s7 n3 H2 l2 w+ e' x( tset 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)
4 L- T( o% i' K2 r2 zset k (k + 1)7 G0 a. a0 q2 @
]
/ q2 q0 H8 l* B5 F. V* Yset [local-reputation] of myself (local)( {* W3 V$ y$ n# U( |) C
end) m8 N, z! u: W/ c4 Z

/ o; w# C: \7 n8 g1 Jto update-neighbor-total2 ]" J7 [' _4 o( p7 E: Q& v
. w. \: e& `8 U6 h
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ s0 n8 i, p( J/ N
0 T( r* |0 P# V  a+ L+ G$ m! A) u4 {

" Y* g2 o  r( M. f: s' A" K. W% Hend
$ g: B$ ]# @% N  v, l
+ s  e5 e1 N1 S9 l3 jto update-credibility-ijl   {6 l9 ~1 Z& M8 W
1 x% z+ p- v7 |; j( G& ~
;;
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。
, @3 {. i, j9 z# M( N6 clet l 0* ?/ |. `# i1 o" A6 _. l# X
while[ l < people ]7 K  c5 ]+ S: h1 ?" G  Q$ D
;;
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; d3 E: a7 d( T% b% Q
[* V& z! N  h5 e
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  [% U* w0 f' \
if (trade-record-one-j-l-len > 3)6 W9 o' R3 h! M! j
[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+ P/ |$ i) V/ v1 ~; G% L6 [4 q' H7 N
let i 3
  e1 V. p# U2 Y3 n" D/ Nlet sum-time 0. b" j& a0 e* ^. L+ K
while[i < trade-record-one-len]7 L8 k. u8 `5 x3 V
[
0 w0 t: e  C% o- m. D1 d8 s! F/ Oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 o5 P4 e3 r% H" l* n2 [set i5 @3 l) E8 t: T8 n( G  ^, i
( i + 1)

( ~! O0 N" v# V% L* Z6 F3 K( t]
1 s) B5 K; W: t" \let credibility-i-j-l 0
$ x5 K+ X: D2 e' H  H$ z6 W;;i
评价(jjl的评价)# I( _3 N' }- Q  |
let j 3
5 z/ `/ J% Q) |/ olet k 4
) C% N; Y  _! z! u9 Owhile[j < trade-record-one-len]
2 Z  w$ X8 X# r. G6 \0 q[& T' r; o6 R; l4 E/ }# ~
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
; f6 T4 ]# Q5 Q% B+ uset 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)
; O1 d9 c& R! w9 N6 k: Qset j; m8 A0 E" F0 s( J1 x- R8 z! c0 M  j
( j + 1)

# w' d  n! M6 F* E]
1 s0 _- w( a; P& N$ j) Lset [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) c- v8 m4 Y2 i% n( t( }+ N* c7 D) u1 b

- ~1 U8 k# j5 Q$ Blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 _: H$ L' p# \2 N4 A6 E' [. f
;;
及时更新il的评价质量的评价( t" S& c! ]1 G
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: Z9 w$ V$ s# P/ m
set l (l + 1)7 r6 L; g9 b. W4 N% ~
]4 r6 Q; v6 j' r1 |' z8 Y8 a, o
end, g* u  }5 G, G3 U

" K4 o- c5 p9 U( ~8 eto update-credibility-list7 Z, g1 X* l* l2 {) o. m5 w3 `
let i 0! e4 N; v9 _  |5 J
while[i < people]: C# H6 e- Z5 A: V0 f7 E! u
[
; }2 F7 U: u* `* t- W- |' |, ]let j 0! x$ q+ D& [, K+ }
let note 02 I$ _3 h! W9 w! S% i/ X
let k 04 B/ Q1 `) G3 o$ z& R
;;
计作出过评价的邻居节点的数目
, D3 K: \( l; X: s9 b& gwhile[j < people]% Q$ }5 J) r* e& S; K( A; v* R
[
( e- r  ~" d( l" ?if (item j( [credibility] of turtle (i + 1)) != -1)0 J5 i/ Z8 P; x' ^
;;
判断是否给本turtle的评价质量做出过评价的节点! Y; [+ l! L  [
[set note (note + item j ([credibility]of turtle (i + 1))). Z9 C6 P  ?8 x- W. J, g
;;*(exp (-(people - 2)))/(people - 2))]

# d: O  i7 U1 e; D' B6 Jset k (k + 1)+ X# g( k5 V$ N: S8 i2 E
]
# D/ x, U. `/ m3 |set j (j + 1)5 U! r# H% F# M) V  A: M. `
]
6 Y- d9 \/ ]1 Yset note (note *(exp (- (1 / k)))/ k)
9 D# u  `$ }/ Z  aset credibility-list (replace-item i credibility-list note)1 ]  X& W2 N" v' [' e+ l& `3 ?
set i (i + 1)) f$ c# ]- o, y6 W
]* s2 F0 \# l( i! ~6 a
end
, v0 f$ i) M) ^. \
2 k. @6 X( ^5 Gto update-global-reputation-list- x% T* Z  e3 r5 c
let j 06 T. r! U2 @  U4 D
while[j < people]
5 r5 k: ?- v" ^( q, c[
2 i0 k( W: Z( Rlet new 00 e0 C$ r$ n: h# D/ [9 a' {
;;
暂存新的一个全局声誉
6 b8 I' T( R5 D9 t8 ]' {: v4 zlet i 0
5 J8 |1 T6 j6 t$ q" f( w3 _9 V* O2 nlet sum-money 0! J& U. ?. Q4 p0 }  ]3 @4 i5 C% `+ f
let credibility-money 0
1 @/ `- D: \/ |" J9 r/ Owhile [i < people]
5 Y% q! x% k: w: S[
- `1 Y$ l$ @. S/ mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 r) n. d$ ~% F/ w8 L. O& C' }set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 O3 X5 T1 B; \
set i (i + 1)
  @, t9 U0 v* B+ a/ _]
  C, u1 g- m7 J9 K+ q9 K8 rlet k 0) C# p9 ~1 N) d8 {; J
let new1 0$ ?! T& G+ M# q; }% W2 u
while [k < people]
8 i/ y: z. y4 V7 T$ A$ W[
: P, n' {/ b. w/ `7 Vset 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)3 `$ J6 ^; I4 M& N
set k (k + 1)3 v) F& `0 s$ X: t; y% ~$ j+ V' e* ~- Q
]
5 q& R" B% s+ o% m' E! v5 bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / i6 I# a0 q' N9 g  q
set global-reputation-list (replace-item j global-reputation-list new)& B2 H! {: ]: _: W+ |2 v6 G
set j (j + 1)0 {# t# b- ?" g4 k$ ?# I+ c+ Y+ K
]: Q5 _+ D5 B4 [  {, G
end3 Z0 A4 K5 ^* b. I, q6 m# W- [
% W( g2 b% V3 c: k
3 s! z* {. E: a6 Q: a

8 E5 y" R# G4 E! h2 gto get-color8 a+ x/ m& k3 h4 [! c7 w  R- s
. e0 k+ E5 Q# K2 _- N
set color blue
7 T- d: U4 n# B8 t) i3 q4 r' ]
end
0 ]; B5 d. t' s3 T# ~' O+ `% A3 [. g) v$ q
to poll-class; a/ t9 i: ~7 d# [
end
/ \5 P/ r1 U, u: X- \+ [- |9 s1 |3 \( C. {# f
to setup-plot1- \  o$ v  D$ ~& d" M" N
, P$ y9 a! U, B: Q
set-current-plot "Trends-of-Local-reputation"
9 v0 g  `0 r" f4 k- l* C7 R* `

4 i9 z8 o7 v& F4 kset-plot-x-range 0 xmax
; C" t: {. X8 ?* B. N

' E+ W; q$ l2 H* E* n0 Rset-plot-y-range 0.0 ymax
2 q: z4 [/ d) ?8 E
end
0 {6 T8 x- e; d4 Z- W7 C, A0 m
to setup-plot2
* o0 n$ J) C2 f; \* K/ m
' t& W& B; D7 W7 ?% I( t' Y& m. qset-current-plot "Trends-of-global-reputation"
1 G1 M$ p: Q) ?6 {. R) @
, H3 `6 L' }) r3 H2 y8 M
set-plot-x-range 0 xmax
6 \4 o- W( n/ i+ A8 U* z
# m, R! x$ `# V0 ?
set-plot-y-range 0.0 ymax

0 n' ~7 e/ t: Q0 X! ]end& `4 ]. K0 c7 {; f2 L, u- H0 \3 K& ?
& E% n& ?6 _4 J) Y* E4 z
to setup-plot3# N) o8 N  |$ @+ t) {& h# Y
( |& O, c/ ?# Y+ n% e; J
set-current-plot "Trends-of-credibility"
, @9 F1 A. C) L& C: N5 w1 i: `& \7 C' u( n
+ M' S" g0 ~, [4 U( w) M
set-plot-x-range 0 xmax

# w/ w7 \. Y6 ]% [
* Y- Z# s: J5 r6 S$ yset-plot-y-range 0.0 ymax
2 k$ i$ X1 X" a! ?9 F( P5 @
end
6 G9 A% y! D, C! _- H" c7 w; ?/ Q) C! G" _! G2 ~+ q; l) z1 g: e$ z
to do-plots
, }# h* r" C! _  v7 q7 Wset-current-plot "Trends-of-Local-reputation"( c' N3 Q! J  {: C# `
set-current-plot-pen "Honest service"
! h' q, N  N* ?8 M' fend
1 K8 ^+ H- \! ^7 A, {" k% \' d
1 R9 I/ j" g% U" ^[ 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.# ]2 X. T% e7 J' A9 I* I8 u

+ P( F9 y) o: A2 m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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